A Wide Band Gap Polymer with a Deep Highest Occupied Molecular Orbital Level Enables 14.2% Efficiency in Polymer Solar Cells

Li, Sunsun; Ye, Long; Zhao, Wenchao; Yan, Hongping; Yang, Bei; Liu, Delong; Li, Wanning; Ade, Harald; Hou, Jianhui

doi:10.1021/jacs.8b02695

A Wide Band Gap Polymer with a Deep Highest Occupied Molecular Orbital Level Enables 14.2% Efficiency in Polymer Solar Cells

Journal Article · Tue May 08 00:00:00 EDT 2018 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/jacs.8b02695· OSTI ID:1470933

^[1]; ^[2]; Zhao, Wenchao ^[1]; Yan, Hongping ^[3]; Yang, Bei ^[1]; Liu, Delong ^[4]; Li, Wanning ^[1]; Ade, Harald ^[2]; ^[1]

Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (People's Republic of China)
North Carolina State Univ., Raleigh, NC (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Chinese Academy of Sciences (CAS), Beijing (China)

To simultaneously achieve low photon energy loss (E_loss) and broad spectral response, the molecular design of the wide band gap (WBG) donor polymer with a deep HOMO level is of critical importance in fullerene-free polymer solar cells (PSCs). Herein, we developed a new benzodithiophene unit, i.e., DTBDT-EF, and conducted systematic investigations on a WBG DTBDT-EF-based donor polymer, namely, PDTB-EF-T. Due to the synergistic electron-withdrawing effect of the fluorine atom and ester group, PDTB-EF-T exhibits a higher oxidation potential, i.e., a deeper HOMO level (ca. –5.5 eV) than most well-known donor polymers. Hence, a high open-circuit voltage of 0.90 V was obtained when paired with a fluorinated small molecule acceptor (IT-4F), corresponding to a low E_loss of 0.62 eV. Furthermore, side-chain engineering demonstrated that subtle side-chain modulation of the ester greatly influences the aggregation effects and molecular packing of polymer PDTB-EF-T. With the benefits of the stronger interchain π–π interaction, the improved ordering structure, and thus the highest hole mobility, the most symmetric charge transport and reduced recombination are achieved for the linear decyl-substituted PDTB-EF-T (P2)-based PSCs, leading to the highest short-circuit current density and fill factor (FF). Due to the high Flory–Huggins interaction parameter (χ), surface-directed phase separation occurs in the P2:IT-4F blend, which is supported by X-ray photoemission spectroscopy results and cross-sectional transmission electron microscope images. By taking advantage of the vertical phase distribution of the P2:IT-4F blend, a high power conversion efficiency (PCE) of 14.2% with an outstanding FF of 0.76 was recorded for inverted devices. Lastly, these results demonstrate the great potential of the DTBDT-EF unit for future organic photovoltaic applications.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1470933

Journal Information:: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 23 Vol. 140; ISSN 0002-7863

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Fused Cyclopentadithienothiophene Acceptor Enables Ultrahigh Short‐Circuit Current and High Efficiency >11% in As‐Cast Organic Solar Cells He, Qiao; Shahid, Munazza; Wu, Jiaying Advanced Functional Materials, Vol. 29, Issue 40 https://doi.org/10.1002/adfm.201904956	journal	August 2019
A Tandem Organic Solar Cell with PCE of 14.52% Employing Subcells with the Same Polymer Donor and Two Absorption Complementary Acceptors Meng, Lingxian; Yi, Yuan‐Qiu‐Qiang; Wan, Xiangjian Advanced Materials, Vol. 31, Issue 18 https://doi.org/10.1002/adma.201804723	journal	February 2019
Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade-Coating and Ternary Strategies in Organic Solar Cells Zhang, Lin; Xu, Xianbin; Lin, Baojun Advanced Materials, Vol. 30, Issue 51 https://doi.org/10.1002/adma.201805041	journal	October 2018
Interfacial Modification in Organic and Perovskite Solar Cells Bi, Shiqing; Leng, Xuanye; Li, Yanxun Advanced Materials, Vol. 31, Issue 45 https://doi.org/10.1002/adma.201805708	journal	January 2019
Advances in Solution-Processed Multijunction Organic Solar Cells Di Carlo Rasi, Dario; Janssen, René A. J. Advanced Materials, Vol. 31, Issue 10 https://doi.org/10.1002/adma.201806499	journal	December 2018
Conjugated Donor–Acceptor Terpolymers Toward High‐Efficiency Polymer Solar Cells Dang, Dongfeng; Yu, Donghong; Wang, Ergang Advanced Materials, Vol. 31, Issue 22 https://doi.org/10.1002/adma.201807019	journal	January 2019
A Simple Phenyl Group Introduced at the Tail of Alkyl Side Chains of Small Molecular Acceptors: New Strategy to Balance the Crystallinity of Acceptors and Miscibility of Bulk Heterojunction Enabling Highly Efficient Organic Solar Cells Li, Yonghai; Zheng, Nan; Yu, Lu Advanced Materials, Vol. 31, Issue 12 https://doi.org/10.1002/adma.201807832	journal	January 2019
Sequential Deposition of Organic Films with Eco‐Compatible Solvents Improves Performance and Enables Over 12%‐Efficiency Nonfullerene Solar Cells Ye, Long; Xiong, Yuan; Chen, Zheng Advanced Materials, Vol. 31, Issue 17 https://doi.org/10.1002/adma.201808153	journal	March 2019
Tailoring and Modifying an Organic Electron Acceptor toward the Cathode Interlayer for Highly Efficient Organic Solar Cells Liao, Qing; Kang, Qian; Yang, Yi Advanced Materials, Vol. 32, Issue 7 https://doi.org/10.1002/adma.201906557	journal	November 2019
Role of Central Metal Ions in 8‐Hydroxyquinoline‐Doped ZnO Interfacial Layers for Improving the Performance of Polymer Solar Cells Babu, B. Hari; Lyu, Chengkun; Yu, Chengzhuo Advanced Materials Interfaces, Vol. 5, Issue 22 https://doi.org/10.1002/admi.201801172	journal	September 2018
Reducing Burn‐In Loss of Organic Photovoltaics by a Robust Electron‐Transporting Layer Oh, Hyerim; Sim, Ha‐Bin; Han, Seung Hee Advanced Materials Interfaces, Vol. 6, Issue 12 https://doi.org/10.1002/admi.201900213	journal	April 2019
Origin of Photocurrent and Voltage Losses in Organic Solar Cells Han, Guangchao; Yi, Yuanping Advanced Theory and Simulations, Vol. 2, Issue 8 https://doi.org/10.1002/adts.201900067	journal	June 2019
Fused-Ring Nonfullerene Acceptor Forming Interpenetrating J -Architecture for Fullerene-Free Polymer Solar Cells Yan, Dong; Liu, Wenxu; Yao, Jiannian Advanced Energy Materials, Vol. 8, Issue 31 https://doi.org/10.1002/aenm.201800204	journal	September 2018
The Introduction of Fluorine and Sulfur Atoms into Benzotriazole-Based p-Type Polymers to Match with a Benzotriazole-Containing n-Type Small Molecule: “The Same-Acceptor-Strategy” to Realize High Open-Circuit Voltage Tang, Ailing; Xiao, Bo; Chen, Fan Advanced Energy Materials, Vol. 8, Issue 25 https://doi.org/10.1002/aenm.201801582	journal	July 2018
Efficient Organic Solar Cells with Extremely High Open-Circuit Voltages and Low Voltage Losses by Suppressing Nonradiative Recombination Losses Liu, Xi; Du, Xiaoyan; Wang, Junyi Advanced Energy Materials, Vol. 8, Issue 26 https://doi.org/10.1002/aenm.201801699	journal	July 2018
Over 13% Efficiency Ternary Nonfullerene Polymer Solar Cells with Tilted Up Absorption Edge by Incorporating a Medium Bandgap Acceptor Zhang, Miao; Xiao, Zuo; Gao, Wei Advanced Energy Materials, Vol. 8, Issue 30 https://doi.org/10.1002/aenm.201801968	journal	September 2018
The Critical Impact of Material and Process Compatibility on the Active Layer Morphology and Performance of Organic Ternary Solar Cells Kim, Joo-Hyun; Schaefer, Charley; Ma, Tingxuan Advanced Energy Materials, Vol. 9, Issue 2 https://doi.org/10.1002/aenm.201802293	journal	November 2018
High-Performance Large-Area Organic Solar Cells Enabled by Sequential Bilayer Processing via Nonhalogenated Solvents Dong, Sheng; Zhang, Kai; Xie, Boming Advanced Energy Materials, Vol. 9, Issue 1 https://doi.org/10.1002/aenm.201802832	journal	November 2018
Liquid‐Crystalline Small Molecules for Nonfullerene Solar Cells with High Fill Factors and Power Conversion Efficiencies Li, Huan; Wu, Qiong; Zhou, Ruimin Advanced Energy Materials, Vol. 9, Issue 6 https://doi.org/10.1002/aenm.201803175	journal	December 2018
Facile Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)–Based Acceptors with Fine‐Tuned Optoelectronic Properties: Toward Efficient Additive‐Free Nonfullerene Organic Solar Cells Wang, Yang; Liu, Bin; Koh, Chang Woo Advanced Energy Materials, Vol. 9, Issue 24 https://doi.org/10.1002/aenm.201803976	journal	May 2019
Quantifying and Understanding Voltage Losses Due to Nonradiative Recombination in Bulk Heterojunction Organic Solar Cells with Low Energetic Offsets Rosenthal, Katie D.; Hughes, Michael P.; Luginbuhl, Benjamin R. Advanced Energy Materials, Vol. 9, Issue 27 https://doi.org/10.1002/aenm.201901077	journal	June 2019
Suppression of Recombination Losses in Polymer:Nonfullerene Acceptor Organic Solar Cells due to Aggregation Dependence of Acceptor Electron Affinity Cha, Hyojung; Fish, George; Luke, Joel Advanced Energy Materials, Vol. 9, Issue 27 https://doi.org/10.1002/aenm.201901254	journal	June 2019
Evaporation‐Free Nonfullerene Flexible Organic Solar Cell Modules Manufactured by An All‐Solution Process Han, Yong Woon; Jeon, Sung Jae; Lee, Hyoung Seok Advanced Energy Materials, Vol. 9, Issue 42 https://doi.org/10.1002/aenm.201902065	journal	September 2019
Revealing Hidden UV Instabilities in Organic Solar Cells by Correlating Device and Material Stability Classen, Andrej; Heumueller, Thomas; Wabra, Isabell Advanced Energy Materials, Vol. 9, Issue 39 https://doi.org/10.1002/aenm.201902124	journal	August 2019
Concurrent Optimization of Organic Donor–Acceptor Pairs through Machine Learning Padula, Daniele; Troisi, Alessandro Advanced Energy Materials, Vol. 9, Issue 40 https://doi.org/10.1002/aenm.201902463	journal	September 2019
Influence of Polymer Aggregation and Liquid Immiscibility on Morphology Tuning by Varying Composition in PffBT4T‐2DT/Nonfullerene Organic Solar Cells Hamid, Zeinab; Wadsworth, Andrew; Rezasoltani, Elham Advanced Energy Materials, Vol. 10, Issue 8 https://doi.org/10.1002/aenm.201903248	journal	January 2020
Sequential Blade‐Coated Acceptor and Donor Enables Simultaneous Enhancement of Efficiency, Stability, and Mechanical Properties for Organic Solar Cells Wang, Yilin; Zhu, Qinglian; Naveed, Hafiz Bilal Advanced Energy Materials, Vol. 10, Issue 7 https://doi.org/10.1002/aenm.201903609	journal	January 2020
3,4‐Dicyanothiophene—a Versatile Building Block for Efficient Nonfullerene Polymer Solar Cells Zhang, Bo; Yu, Yonggao; Zhou, Jiadong Advanced Energy Materials, Vol. 10, Issue 12 https://doi.org/10.1002/aenm.201904247	journal	March 2020
Polymer Donors for High‐Performance Non‐Fullerene Organic Solar Cells Fu, Huiting; Wang, Zhaohui; Sun, Yanming Angewandte Chemie, Vol. 131, Issue 14 https://doi.org/10.1002/ange.201806291	journal	January 2019
The Crucial Role of Chlorinated Thiophene Orientation in Conjugated Polymers for Photovoltaic Devices Wu, Yanan; An, Cunbin; Shi, Lanlan Angewandte Chemie, Vol. 130, Issue 39 https://doi.org/10.1002/ange.201807865	journal	August 2018
Polymer Donors for High-Performance Non-Fullerene Organic Solar Cells Fu, Huiting; Wang, Zhaohui; Sun, Yanming Angewandte Chemie International Edition, Vol. 58, Issue 14 https://doi.org/10.1002/anie.201806291	journal	January 2019
The Crucial Role of Chlorinated Thiophene Orientation in Conjugated Polymers for Photovoltaic Devices Wu, Yanan; An, Cunbin; Shi, Lanlan Angewandte Chemie International Edition, Vol. 57, Issue 39 https://doi.org/10.1002/anie.201807865	journal	August 2018
Ladder-Type Heteroarene-Based Organic Semiconductors Chen, Jianhua; Yang, Kun; Zhou, Xin Chemistry - An Asian Journal, Vol. 13, Issue 18 https://doi.org/10.1002/asia.201800860	journal	August 2018
Ladder‐Type Nonacyclic Arene Bis(thieno[3,2‐b]thieno)cyclopentafluorene as a Promising Building Block for Non‐Fullerene Acceptors Fan, Xiaobing; Gao, Jianhong; Wang, Wei Chemistry – An Asian Journal, Vol. 14, Issue 10 https://doi.org/10.1002/asia.201801669	journal	August 2018
Additive‐Free Non‐Fullerene Organic Solar Cells Zhang, Xianhe; Tang, Yumin; Yang, Kun ChemElectroChem, Vol. 6, Issue 22 https://doi.org/10.1002/celc.201901422	journal	October 2019
Self-Assembly of Chiral-at-End Diketopyrrolopyrroles: Symmetry Dependent Solution and Film Optical Activity and Photovoltaic Performance Hume, Paul A.; Monks, James P.; Pop, Flavia Chemistry - A European Journal, Vol. 24, Issue 54 https://doi.org/10.1002/chem.201802610	journal	August 2018
The Twisted Benzo[ ghi ]-Perylenetriimide Dimer as a 3D Electron Acceptor for Fullerene-Free Organic Photovoltaics Chen, Hung-Cheng; Jiang, Bing-Huang; Hsu, Chao-Ping Chemistry - A European Journal, Vol. 24, Issue 66 https://doi.org/10.1002/chem.201804088	journal	November 2018
Tuning the NIR Absorption Properties of 1,3,4,6,9b-Pentaazaphenalene Derivatives Through the Spatially Separated Frontier Molecular Orbitals: Tuning the NIR Absorption Properties of 1,3,4,6,9b-Pentaazaphenalene Derivatives Through the Spatially Separated Frontier Molecular Orbitals Watanabe, Hiroyuki; Ochi, Junki; Tanaka, Kazuo European Journal of Organic Chemistry, Vol. 2020, Issue 7 https://doi.org/10.1002/ejoc.201901569	journal	February 2020
Studies on One‐Step‐Synthesized Hydrated Vanadium Pentoxide for Efficient Hole Transport in Organic Photovoltaics Ravi, Remya; Deb, Biswapriya Energy Technology, Vol. 8, Issue 5 https://doi.org/10.1002/ente.201901323	journal	February 2020
Exploration of the Direct Arylation Polymerization Method for the Practical Application of Conjugated Materials: Synthetic Scale-Up, Solar Cell Performance, and Cost Analyses Pappenfus, Ted M.; Almyahi, Furqan; Cooling, Nathan A. Macromolecular Chemistry and Physics, Vol. 219, Issue 21 https://doi.org/10.1002/macp.201800272	journal	October 2018
Asymmetric Wide‐Bandgap Polymers Simultaneously Improve the Open‐Circuit Voltage and Short‐Circuit Current for Organic Photovoltaics Huang, Shaorong; Gu, Wanying; Chen, Lie Macromolecular Rapid Communications, Vol. 40, Issue 8 https://doi.org/10.1002/marc.201800906	journal	February 2019
Chlorinated Polymers for Efficient Solar Cells with High Open Circuit Voltage: The Influence of Different Thiazole Numbers Yuan, Xiyue; Wang, Qian; Zhu, Dangqiang Macromolecular Rapid Communications, Vol. 40, Issue 11 https://doi.org/10.1002/marc.201900035	journal	March 2019
Challenges to the Stability of Active Layer Materials in Organic Solar Cells Wang, Kun; Li, Yaowen; Li, Yongfang Macromolecular Rapid Communications, Vol. 41, Issue 4 https://doi.org/10.1002/marc.201900437	journal	January 2020
Conjugated polymer single crystals and nanowires Cao, Xinxiu; Zhao, Kefeng; Chen, Liang POLYMER CRYSTALLIZATION, Vol. 2, Issue 3 https://doi.org/10.1002/pcr2.10064	journal	February 2019
Improving the performance of inverted organic solar cells by embedding silica‐coated silver nanoparticles deposited by electron‐beam evaporation N'Konou, Kekeli; Chalh, Malika; Lucas, Bruno Polymer International, Vol. 68, Issue 5 https://doi.org/10.1002/pi.5789	journal	March 2019
Development of a phenanthrodithiophene-difluorobenzoxadiazole copolymer exhibiting high open-circuit voltage in organic solar cells Mori, Hiroki; Takahashi, Ryosuke; Nishihara, Yasushi Journal of Polymer Science Part A: Polymer Chemistry, Vol. 56, Issue 23 https://doi.org/10.1002/pola.29248	journal	October 2018
Impact of Alkyl Side Chains on Optoelectronic and Photovoltaic Properties of Novel Benzodithiophenedione‐Based Conjugated Polymers Akkuratov, Alexander; Martinov, Ilya; Avilova, Irina physica status solidi (RRL) – Rapid Research Letters, Vol. 13, Issue 9 https://doi.org/10.1002/pssr.201900154	journal	May 2019
Recent Progress in Molecular Design of Fused Ring Electron Acceptors for Organic Solar Cells Dey, Somnath Small, Vol. 15, Issue 21 https://doi.org/10.1002/smll.201900134	journal	April 2019
Fused‐Ring Core Engineering for Small Molecule Acceptors Enable High‐Performance Nonfullerene Polymer Solar Cells Ming, Ruijie; Wang, Jianxiao; Gao, Wei Small Methods, Vol. 3, Issue 11 https://doi.org/10.1002/smtd.201900280	journal	May 2019
Fine Tuning the Light Distribution within the Photoactive Layer by Both Solution-Processed Anode and Cathode Interlayers for High Performance Polymer Solar Cells Wang, Fuzhi; Wang, Yaping; Liu, Hao Solar RRL, Vol. 2, Issue 10 https://doi.org/10.1002/solr.201800141	journal	August 2018
Highly Efficient Non-Fullerene Polymer Solar Cells Enabled by Wide Bandgap Copolymers With Conjugated Selenyl Side Chains Li, Zuojia; Xu, Xiaopeng; Zhang, Guangjun Solar RRL, Vol. 2, Issue 10 https://doi.org/10.1002/solr.201800186	journal	August 2018
Improving Performance of All‐Polymer Solar Cells Through Backbone Engineering of Both Donors and Acceptors Duan, Chunhui; Li, Zhaojun; Pang, Shuting Solar RRL, Vol. 2, Issue 12 https://doi.org/10.1002/solr.201800247	journal	September 2018
Improving the Electron Mobility of ITIC by End-Group Modulation: The Role of Fluorination and π-Extension Han, Guangchao; Guo, Yuan; Ning, Lu Solar RRL, Vol. 3, Issue 1 https://doi.org/10.1002/solr.201800251	journal	November 2018
Solution‐Processed Tin Oxide‐PEDOT:PSS Interconnecting Layers for Efficient Inverted and Conventional Tandem Polymer Solar Cells Di Carlo Rasi, Dario; van Thiel, Pieter M. J. G.; Bin, Haijun Solar RRL, Vol. 3, Issue 4 https://doi.org/10.1002/solr.201800366	journal	February 2019
A High‐Performance Non‐Fullerene Acceptor Compatible with Polymers with Different Bandgaps for Efficient Organic Solar Cells Liu, Tao; Gao, Wei; Zhang, Guangye Solar RRL, Vol. 3, Issue 5 https://doi.org/10.1002/solr.201800376	journal	March 2019
P3HT Molecular Weight Determines the Performance of P3HT:O‐IDTBR Solar Cells Khan, Jafar Iqbal; Ashraf, Raja Shahid; Alamoudi, Maha A. Solar RRL, Vol. 3, Issue 8 https://doi.org/10.1002/solr.201900023	journal	May 2019
Organic Solar Cells Based on High Hole Mobility Conjugated Polymer and Nonfullerene Acceptor with Comparable Bandgaps and Suitable Energy Level Offsets Showing Significant Suppression of J _sc – V _oc Trade‐Off Wang, Zhen; Liu, Xuncheng; Jiang, Haiying Solar RRL, Vol. 3, Issue 7 https://doi.org/10.1002/solr.201900079	journal	May 2019
Synergistic Effects of Side‐Chain Engineering and Fluorination on Small Molecule Acceptors to Simultaneously Broaden Spectral Response and Minimize Voltage Loss for 13.8% Efficiency Organic Solar Cells Fan, Qunping; Su, Wenyan; Zhang, Ming Solar RRL, Vol. 3, Issue 11 https://doi.org/10.1002/solr.201900169	journal	July 2019
ITO‐Free Organic Photovoltaic Modules Based on Fluorinated Polymers Deposited from Non‐Halogenated Solution: A Major Step Toward Large‐Scale Module Production Ibraikulov, Olzhas. A.; Wang, Jing; Kamatham, Narayanaswamy Solar RRL, Vol. 3, Issue 12 https://doi.org/10.1002/solr.201900273	journal	August 2019
Trendsetters in High‐Efficiency Organic Solar Cells: Toward 20% Power Conversion Efficiency Upama, Mushfika Baishakhi; Mahmud, Md Arafat; Conibeer, Gavin Solar RRL, Vol. 4, Issue 1 https://doi.org/10.1002/solr.201900342	journal	October 2019
A Nonfullerene Acceptor with Alkylthio‐ and Dimethoxy‐Thiophene‐Groups Yielding High‐Performance Ternary Organic Solar Cells Zeng, Anping; Pan, Mingao; Lin, Baojun Solar RRL, Vol. 4, Issue 1 https://doi.org/10.1002/solr.201900353	journal	October 2019
New Conjugated Polymers Based on Dithieno[2,3‐e:3′,2′‐g]Isoindole‐7,9(8H)‐Dione Derivatives for Applications in Nonfullerene Polymer Solar Cells Keshtov, Mukhamed L.; Kuklin, Sergei A.; Konstantinov, Igor O. Solar RRL, Vol. 4, Issue 3 https://doi.org/10.1002/solr.201900475	journal	December 2019
Multiple Temporal‐Scale Photocarrier Dynamics Induced by Synergistic Effects of Fluorination and Chlorination in Highly Efficient Nonfullerene Organic Solar Cells Zhang, Kang-Ning; Niu, Meng-Si; Jiang, Zhi-Nan Solar RRL, Vol. 4, Issue 4 https://doi.org/10.1002/solr.201900552	journal	April 2020
Towards Green Synthesis and Processing of Organic Solar Cells Huang, Yunping; Luscombe, Christine K. The Chemical Record, Vol. 19, Issue 6 https://doi.org/10.1002/tcr.201800145	journal	January 2019
Charge Transfer State in the Composite DTS(FBTTh2)2:PC71BM: Dynamics of Electron–Hole Distance Distribution After Light Absorption Uvarov, Mikhail N.; Kulik, Leonid V. Applied Magnetic Resonance, Vol. 50, Issue 11 https://doi.org/10.1007/s00723-019-01149-1	journal	August 2019
Combined parametric optimization of P3HT: PC70BM films for efficient bulk-heterojunction solar cells Siddiqui, Hafsa; Parra, Mohammad Ramzan; Pandey, Padmini Journal of Solid State Electrochemistry, Vol. 23, Issue 12 https://doi.org/10.1007/s10008-019-04421-3	journal	November 2019
Fluorination-substitution effect on all-small-molecule organic solar cells Wu, Qiong; Deng, Dan; Zhang, Jianqi Science China Chemistry, Vol. 62, Issue 7 https://doi.org/10.1007/s11426-018-9437-7	journal	March 2019
Black phosphorus nanoflakes as morphology modifier for efficient fullerene-free organic solar cells with high fill-factor and better morphological stability Yang, Weitao; Ye, Long; Yao, Fenfa Nano Research, Vol. 12, Issue 4 https://doi.org/10.1007/s12274-019-2288-9	journal	February 2019
Noncovalently fused-ring electron acceptors with near-infrared absorption for high-performance organic solar cells Huang, Hao; Guo, Qingxin; Feng, Shiyu Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-11001-6	journal	July 2019
De novo design of small molecule acceptors via fullerene/non-fullerene hybrids for polymer solar cells Zhao, Yuan; Luo, Zhenghui; Li, Guanghao Chemical Communications, Vol. 54, Issue 70 https://doi.org/10.1039/c8cc04845b	journal	January 2018
Ternary nonfullerene polymer solar cells with efficiency >13.7% by integrating the advantages of the materials and two binary cells Ma, Xiaoling; Gao, Wei; Yu, Jiangsheng Energy & Environmental Science, Vol. 11, Issue 8 https://doi.org/10.1039/c8ee01107a	journal	January 2018
Textile-based washable polymer solar cells for optoelectronic modules: toward self-powered smart clothing Jeong, Eun Gyo; Jeon, Yongmin; Cho, Seok Ho Energy & Environmental Science, Vol. 12, Issue 6 https://doi.org/10.1039/c8ee03271h	journal	January 2019
A new dialkylthio-substituted naphtho[2,3- c ]thiophene-4,9-dione based polymer donor for high-performance polymer solar cells Wu, Yue; Yang, Hang; Zou, Yan Energy & Environmental Science, Vol. 12, Issue 2 https://doi.org/10.1039/c8ee03608j	journal	January 2019
Cross-conjugated poly(selenylene vinylene)s Zhang, Zhen; Qin, Yang Polymer Chemistry, Vol. 10, Issue 8 https://doi.org/10.1039/c8py01555d	journal	January 2019
Enhancement of intra- and inter-molecular π-conjugated effects for a non-fullerene acceptor to achieve high-efficiency organic solar cells with an extended photoresponse range and optimized morphology Wang, Ning; Zhan, Lingling; Li, Shuixing Materials Chemistry Frontiers, Vol. 2, Issue 11 https://doi.org/10.1039/c8qm00318a	journal	January 2018
Improved efficiency in fullerene and non-fullerene polymer solar cells having an interdigitated interface with the electron transport layer Yan, Yu; Li, Wei; Cai, Jinlong Materials Chemistry Frontiers, Vol. 2, Issue 10 https://doi.org/10.1039/c8qm00347e	journal	January 2018
An A–D–A′–D–A type small molecule acceptor with wide absorption spectrum and near-infrared absorption Miao, Junhui; Wang, Junxia; Meng, Bin Materials Chemistry Frontiers, Vol. 2, Issue 12 https://doi.org/10.1039/c8qm00441b	journal	January 2018
Combination of noncovalent conformational locks and side chain engineering to tune the crystallinity of nonfullerene acceptors for high-performance P3HT based organic solar cells Ye, Pan; Chen, Yusheng; Wu, Jianfei Materials Chemistry Frontiers, Vol. 3, Issue 1 https://doi.org/10.1039/c8qm00461g	journal	January 2019
Pairing 1D/2D-conjugation donors/acceptors towards high-performance organic solar cells Wang, Jiayu; Xiao, Yiqun; Wang, Wei Materials Chemistry Frontiers, Vol. 3, Issue 2 https://doi.org/10.1039/c8qm00512e	journal	January 2019
Quaternary polymer solar cells with over 13% efficiency enabled by improving film-morphologies via binary mixed fullerene additive Shen, Fugang; Yan, Dong; Li, Weiping Materials Chemistry Frontiers, Vol. 3, Issue 2 https://doi.org/10.1039/c8qm00571k	journal	January 2019
High-performance wide-bandgap copolymers with dithieno[3,2- b :2′,3′- d ]pyridin-5(4 H )-one units Gao, Yaxin; Li, Dan; Xiao, Zuo Materials Chemistry Frontiers, Vol. 3, Issue 3 https://doi.org/10.1039/c8qm00604k	journal	January 2019
Tandem structure: a breakthrough in power conversion efficiency for highly efficient polymer solar cells Shi, Zhenzhen; Bai, Yiming; Chen, Xiaohan Sustainable Energy & Fuels, Vol. 3, Issue 4 https://doi.org/10.1039/c8se00601f	journal	January 2019
Nonfullerene small-molecule acceptors with perpendicular side-chains for fullerene-free solar cells Shen, Fugang; Xu, Jianzhong; Li, Xuemei Journal of Materials Chemistry A, Vol. 6, Issue 32 https://doi.org/10.1039/c8ta04718a	journal	January 2018
Reducing the confinement of PBDB-T to ITIC to improve the crystallinity of PBDB-T/ITIC blends Liang, Qiuju; Han, Jie; Song, Chunpeng Journal of Materials Chemistry A, Vol. 6, Issue 32 https://doi.org/10.1039/c8ta05892j	journal	January 2018
Effects of fused-ring regiochemistry on the properties and photovoltaic performance of n-type organic semiconductor acceptors Li, Xiaojun; Huang, He; Peng, Zhengxing Journal of Materials Chemistry A, Vol. 6, Issue 33 https://doi.org/10.1039/c8ta05920a	journal	January 2018
Efficient non-fullerene organic solar cells employing sequentially deposited donor–acceptor layers Zhang, Jiangbin; Kan, Bin; Pearson, Andrew J. Journal of Materials Chemistry A, Vol. 6, Issue 37 https://doi.org/10.1039/c8ta06860g	journal	January 2018
Sifting α,ω-di(thiophen-2-yl)alkanes as solvent additives to boost the photovoltaic performance of the PTB7-Th:PC ₇₁ BM blend Gao, Jianhong; Wang, Wei; Zhan, Chun Journal of Materials Chemistry A, Vol. 6, Issue 42 https://doi.org/10.1039/c8ta06989a	journal	January 2018
A bright outlook on organic photoelectrochemical cells for water splitting Steier, Ludmilla; Holliday, Sarah Journal of Materials Chemistry A, Vol. 6, Issue 44 https://doi.org/10.1039/c8ta07036a	journal	January 2018
Synergistic effect of side-chain and backbone engineering in thieno[2,3- f ]benzofuran-based conjugated polymers for high performance non-fullerene organic solar cells Dou, Keke; Wang, Xunchang; Du, Zurong Journal of Materials Chemistry A, Vol. 7, Issue 3 https://doi.org/10.1039/c8ta07544a	journal	January 2019
Semitransparent all-polymer solar cells through lamination Xia, Yuxin; Xu, Xiaofeng; Aguirre, Luis Ever Journal of Materials Chemistry A, Vol. 6, Issue 42 https://doi.org/10.1039/c8ta07992g	journal	January 2018
Ternary non-fullerene polymer solar cells with a high crystallinity n-type organic semiconductor as the second acceptor Zhong, Lian; Bin, Haijun; Li, Yongxi Journal of Materials Chemistry A, Vol. 6, Issue 48 https://doi.org/10.1039/c8ta08406h	journal	January 2018
Self-doping small molecular conjugated electrolytes enabled by n-type side chains for highly efficient non-fullerene polymer solar cells Wang, Shichao; Li, Zuojia; Xu, Xiaopeng Journal of Materials Chemistry A, Vol. 6, Issue 45 https://doi.org/10.1039/c8ta08948e	journal	January 2018
Simple-structured small molecule acceptors constructed by a weakly electron-deficient thiazolothiazole core for high-efficiency non-fullerene organic solar cells Peng, Wenhong; Zhang, Guangjun; Shao, Lin Journal of Materials Chemistry A, Vol. 6, Issue 47 https://doi.org/10.1039/c8ta09370a	journal	January 2018
High-performance inverted polymer solar cells without an electron extraction layer via a one-step coating of cathode buffer and active layer Zheng, Nannan; Wang, Zhenfeng; Zhang, Kai Journal of Materials Chemistry A, Vol. 7, Issue 4 https://doi.org/10.1039/c8ta09763a	journal	January 2019
Multifunctional bipyramid-Au@ZnO core–shell nanoparticles as a cathode buffer layer for efficient non-fullerene inverted polymer solar cells with improved near-infrared photoresponse Li, Jinyan; Bai, Yiming; Yang, Bo Journal of Materials Chemistry A, Vol. 7, Issue 6 https://doi.org/10.1039/c8ta10549a	journal	January 2019
Green solvent-processed efficient non-fullerene organic solar cells enabled by low-bandgap copolymer donors with EDOT side chains Liao, Chentong; Zhang, Ming; Xu, Xiaopeng Journal of Materials Chemistry A, Vol. 7, Issue 2 https://doi.org/10.1039/c8ta10882j	journal	January 2019
Towards improved efficiency of polymer solar cells via chlorination of a benzo[1,2- b :4,5- b ′]dithiophene based polymer donor Dong, Yingying; Yang, Hang; Wu, Yue Journal of Materials Chemistry A, Vol. 7, Issue 5 https://doi.org/10.1039/c8ta10923k	journal	January 2019
Multifunctional asymmetrical molecules for high-performance perovskite and organic solar cells Gao, Wei; Wu, Fei; Liu, Tao Journal of Materials Chemistry A, Vol. 7, Issue 5 https://doi.org/10.1039/c8ta10975c	journal	January 2019
NIR absorbing ortho -π-extended perylene bisimide as a promising material for bulk heterojunction organic solar cells Regar, Ramprasad; Mishra, Ruchika; Singhal, Rahul Journal of Materials Chemistry A, Vol. 7, Issue 7 https://doi.org/10.1039/c8ta10982f	journal	January 2019
A wide bandgap conjugated polymer donor based on alkoxyl-fluorophenyl substituted benzodithiophene for high performance non-fullerene polymer solar cells Li, Wanbin; Li, Guangda; Guo, Huan Journal of Materials Chemistry A, Vol. 7, Issue 3 https://doi.org/10.1039/c8ta11006a	journal	January 2019
Asymmetric selenophene-based non-fullerene acceptors for high-performance organic solar cells Li, Chao; Xia, Tian; Song, Jiali Journal of Materials Chemistry A, Vol. 7, Issue 4 https://doi.org/10.1039/c8ta11197a	journal	January 2019
A decacyclic indacenodithiophene-based non-fullerene electron acceptor with meta -alkyl-phenyl substitutions for polymer solar cells Wu, Fupeng; Zhong, Lian; Hu, Huawei Journal of Materials Chemistry A, Vol. 7, Issue 8 https://doi.org/10.1039/c8ta11972d	journal	January 2019
Increased charge transfer state separation via reduced mixed phase interface in polymer solar cells Ferron, Thomas; Waldrip, Matthew; Pope, Michael Journal of Materials Chemistry A, Vol. 7, Issue 9 https://doi.org/10.1039/c8ta12336e	journal	January 2019
Molecular engineering of central fused-ring cores of non-fullerene acceptors for high-efficiency organic solar cells Wang, Hongtao; Cao, Jinru; Yu, Jiangsheng Journal of Materials Chemistry A, Vol. 7, Issue 9 https://doi.org/10.1039/c8ta12465e	journal	January 2019
Tuning the dipole moments of nonfullerene acceptors with an asymmetric terminal strategy for highly efficient organic solar cells Li, Miao; Zhou, Yuanyuan; Zhang, Jianqi Journal of Materials Chemistry A, Vol. 7, Issue 15 https://doi.org/10.1039/c8ta12530a	journal	January 2019
A tetrachlorinated molecular non-fullerene acceptor for high performance near-IR absorbing organic solar cells Laventure, Audrey; Welch, Gregory C. Journal of Materials Chemistry C, Vol. 6, Issue 34 https://doi.org/10.1039/c8tc02701c	journal	January 2018
Butterfly-shaped asymmetric squaraine dimers for organic photovoltaics Xiao, Qi; Li, Yibin; Wu, Fei Journal of Materials Chemistry C, Vol. 6, Issue 39 https://doi.org/10.1039/c8tc03781g	journal	January 2018
Transforming the molecular orientation of crystalline lamellae by the degree of multi-fluorination within D–A copolymers and its effect on photovoltaic performance Gao, Jianhong; Wang, Wei; Hu, Yanqi Journal of Materials Chemistry C, Vol. 6, Issue 39 https://doi.org/10.1039/c8tc03872d	journal	January 2018
Rational design strategies for electron-deficient semiconducting polymers in ambipolar/n-channel organic transistors and all-polymer solar cells Wang, Yang; Michinobu, Tsuyoshi Journal of Materials Chemistry C, Vol. 6, Issue 39 https://doi.org/10.1039/c8tc03967d	journal	January 2018
Prospects of colour selective organic photodiodes Yoon, Seongwon; Sim, Kyu Min; Chung, Dae Sung Journal of Materials Chemistry C, Vol. 6, Issue 48 https://doi.org/10.1039/c8tc04371j	journal	January 2018
A small-molecule acceptor incorporating a silicon bridging atom for efficient nonfullerene polymer solar cells Zeng, Guang; Ouyang, Jinyang; Xin, Yue Journal of Materials Chemistry C, Vol. 6, Issue 48 https://doi.org/10.1039/c8tc04883e	journal	January 2018
Perylene diimide based star-shaped small molecular acceptors for high efficiency organic solar cells Wang, Hang; Li, Miao; Liu, Yahui Journal of Materials Chemistry C, Vol. 7, Issue 4 https://doi.org/10.1039/c8tc05332d	journal	January 2019
Vinylene-bridged difluorobenzo[ c ][1,2,5]-thiadiazole (FBTzE): a new electron-deficient building block for high-performance semiconducting polymers in organic electronics Asanuma, Yuya; Mori, Hiroki; Takahashi, Ryosuke Journal of Materials Chemistry C, Vol. 7, Issue 4 https://doi.org/10.1039/c8tc05764h	journal	January 2019
Influence of backbone modification of difluoroquinoxaline-based copolymers on the interchain packing, blend morphology and photovoltaic properties of nonfullerene organic solar cells Li, Yuxiang; Kim, Minseok; Wu, Ziang Journal of Materials Chemistry C, Vol. 7, Issue 6 https://doi.org/10.1039/c8tc06206d	journal	January 2019
Vacuum-assisted annealing method for high efficiency printable large-area polymer solar cell modules Zhao, Wenchao; Zhang, Yun; Zhang, Shaoqing Journal of Materials Chemistry C, Vol. 7, Issue 11 https://doi.org/10.1039/c8tc06513f	journal	January 2019
Efficient as-cast semi-transparent organic solar cells with efficiency over 9% and a high average visible transmittance of 27.6% Su, Wenyan; Fan, Qunping; Guo, Xia Physical Chemistry Chemical Physics, Vol. 21, Issue 20 https://doi.org/10.1039/c9cp01101c	journal	January 2019
Impact of the donor polymer on recombination via triplet excitons in a fullerene-free organic solar cell Van Landeghem, Melissa; Lenaerts, Ruben; Kesters, Jurgen Physical Chemistry Chemical Physics, Vol. 21, Issue 41 https://doi.org/10.1039/c9cp03793d	journal	January 2019
Electronic couplings and rates of excited state charge transfer processes at poly(thiophene- co -quinoxaline)–PC ₇₁ BM interfaces: two- versus multi-state treatments Kastinen, Tuuva; da Silva Filho, Demetrio Antonio; Paunonen, Lassi Physical Chemistry Chemical Physics, Vol. 21, Issue 46 https://doi.org/10.1039/c9cp04837e	journal	January 2019
A monothiophene unit incorporating both fluoro and ester substitution enabling high-performance donor polymers for non-fullerene solar cells with 16.4% efficiency Sun, Huiliang; Liu, Tao; Yu, Jianwei Energy & Environmental Science, Vol. 12, Issue 11 https://doi.org/10.1039/c9ee01890e	journal	January 2019
High-performance conjugated polymer donor materials for polymer solar cells with narrow-bandgap nonfullerene acceptors Cui, Chaohua; Li, Yongfang Energy & Environmental Science, Vol. 12, Issue 11 https://doi.org/10.1039/c9ee02531f	journal	January 2019
Effect of linear side-chain length on the photovoltaic performance of benzodithiophene- alt -dicarboxylic ester terthiophene polymers Ma, Kangqiao; Zhang, Tao; Wan, Pan New Journal of Chemistry, Vol. 43, Issue 33 https://doi.org/10.1039/c9nj02484k	journal	January 2019
Fluorinated heptacyclic carbazole-based ladder-type acceptors with aliphatic side chains for efficient fullerene-free organic solar cells Chen, Tsung-Wei; Hsiao, Yu-Tang; Lin, You-Wei Materials Chemistry Frontiers, Vol. 3, Issue 5 https://doi.org/10.1039/c9qm00005d	journal	January 2019
An efficient, three-dimensional non-fullerene electron acceptor: functionalizing tetraphenylethylene with naphthalene diimides Wagalgave, Sopan M.; Bhosale, Sheshanath V.; Bhosale, Rajesh S. Materials Chemistry Frontiers, Vol. 3, Issue 6 https://doi.org/10.1039/c9qm00129h	journal	January 2019
Effect of fluorine substitution in organoboron electron acceptors for photovoltaic application Liu, Fangbin; Liu, Jun; Wang, Lixiang Organic Chemistry Frontiers, Vol. 6, Issue 12 https://doi.org/10.1039/c9qo00286c	journal	January 2019
N -Alkylation vs. O -alkylation: influence on the performance of the photovoltaic cells based on a tetracyclic lactam polymer donor Li, Chenchen; Cai, Mian; Bao, Xichang RSC Advances, Vol. 9, Issue 22 https://doi.org/10.1039/c9ra01545k	journal	January 2019
Charge transport and extraction of PTB7:PC ₇₁ BM organic solar cells: effect of film thickness and thermal-annealing Zhang, Yingying; Li, Xiong; Dai, Tingting RSC Advances, Vol. 9, Issue 43 https://doi.org/10.1039/c9ra02877c	journal	January 2019
Stable P3HT: amorphous non-fullerene solar cells with a high open-circuit voltage of 1 V and efficiency of 4% Lee, HyunKyung; Oh, Sora; Song, Chang Eun RSC Advances, Vol. 9, Issue 36 https://doi.org/10.1039/c9ra03188j	journal	January 2019
A nuanced approach for assessing OPV materials for large scale applications Al-Ahmad, Alaa Y.; Almayhi, Furqan; Al-Mudhaffer, Mohammed F. Sustainable Energy & Fuels, Vol. 4, Issue 2 https://doi.org/10.1039/c9se01149h	journal	January 2020
Colored semitransparent polymer solar cells with a power conversion efficiency of 9.36% achieved by controlling the optical Tamm state Shen, Ping; Yao, Mengnan; Liu, Junshi Journal of Materials Chemistry A, Vol. 7, Issue 8 https://doi.org/10.1039/c9ta00227h	journal	January 2019
Regulating exciton bonding energy and bulk heterojunction morphology in organic solar cells via methyl-functionalized non-fullerene acceptors Gao, Wei; Liu, Tao; Luo, Zhenghui Journal of Materials Chemistry A, Vol. 7, Issue 12 https://doi.org/10.1039/c9ta00597h	journal	January 2019
Dihydropyreno[1,2- b :6,7- b ′]dithiophene based electron acceptors for high efficiency as-cast organic solar cells Jiang, Pengcheng; Lu, Hao; Jia, Qing-Qing Journal of Materials Chemistry A, Vol. 7, Issue 11 https://doi.org/10.1039/c9ta00614a	journal	January 2019
As-cast ternary polymer solar cells based on a nonfullerene acceptor and its fluorinated counterpart showing improved efficiency and good thickness tolerance Pan, Feilong; Zhang, Lianjie; Jiang, Haiying Journal of Materials Chemistry A, Vol. 7, Issue 16 https://doi.org/10.1039/c9ta01003c	journal	January 2019
Improved photovoltaic performance of a nonfullerene acceptor based on a benzo[ b ]thiophene fused end group with extended π-conjugation Yang, Kun; Liao, Qiaogan; Koh, Chang Woo Journal of Materials Chemistry A, Vol. 7, Issue 16 https://doi.org/10.1039/c9ta01111k	journal	January 2019
Overcoming the energy loss in asymmetrical non-fullerene acceptor-based polymer solar cells by halogenation of polymer donors Fan, Qunping; Liu, Tao; Gao, Wei Journal of Materials Chemistry A, Vol. 7, Issue 25 https://doi.org/10.1039/c9ta02243k	journal	January 2019
Increase in efficiency on using selenophene instead of thiophene in π-bridges for D-π-DPP-π-D organic solar cells Cuesta, Virginia; Vartanian, Maida; Malhotra, Prateek Journal of Materials Chemistry A, Vol. 7, Issue 19 https://doi.org/10.1039/c9ta02415h	journal	January 2019
Bismuth oxysulfide modified ZnO nanorod arrays as an efficient electron transport layer for inverted polymer solar cells Wu, Zuping; Yu, Huangzhong; Shi, Shengwei Journal of Materials Chemistry A, Vol. 7, Issue 24 https://doi.org/10.1039/c9ta02447f	journal	January 2019
An efficient binary cathode interlayer for large-bandgap non-fullerene organic solar cells Yin, Qingwu; Zhang, Kai; Zhang, Long Journal of Materials Chemistry A, Vol. 7, Issue 20 https://doi.org/10.1039/c9ta02844g	journal	January 2019
Benzo[1,2- b :4,5- b ′]diselenophene-fused nonfullerene acceptors with alternative aromatic ring-based and monochlorinated end groups: a new synergistic strategy to simultaneously achieve highly efficient organic solar cells with the energy loss of 0.49 eV Wan, Shi-Sheng; Xu, Xiaopeng; Wang, Jin-Liang Journal of Materials Chemistry A, Vol. 7, Issue 19 https://doi.org/10.1039/c9ta03177d	journal	January 2019
Stable large area organic solar cells realized by using random terpolymers donors combined with a ternary blend Xu, Xiaopeng; Bi, Zhaozhao; Ma, Wei Journal of Materials Chemistry A, Vol. 7, Issue 23 https://doi.org/10.1039/c9ta03188j	journal	January 2019
Strategic end-halogenation of π-conjugated small molecules enabling fine morphological control and enhanced performance of organic solar cells Furukawa, Seiichi; Yasuda, Takuma Journal of Materials Chemistry A, Vol. 7, Issue 24 https://doi.org/10.1039/c9ta03869h	journal	January 2019
Design of wide-bandgap polymers with deeper ionization potential enables efficient ternary non-fullerene polymer solar cells with 13% efficiency Liu, Delong; Zhang, Ying; Zhan, Lingling Journal of Materials Chemistry A, Vol. 7, Issue 23 https://doi.org/10.1039/c9ta04237g	journal	January 2019
All-polymer solar cells based on a novel narrow-bandgap polymer acceptor with power conversion efficiency over 10% Wu, Jingnan; Meng, Yuan; Guo, Xia Journal of Materials Chemistry A, Vol. 7, Issue 27 https://doi.org/10.1039/c9ta04611a	journal	January 2019
High face-on ratio isoindigo copolymers with extended nano-fibrillar networks in fullerene-based thick (>300 nm) photovoltaics achieving a high efficiency of 10.7% Liao, Song-Fu; Lu, Chun-Fu; Fenta, Adane Desta Journal of Materials Chemistry A, Vol. 7, Issue 37 https://doi.org/10.1039/c9ta06719a	journal	January 2019
Enhanced efficiency and stability of PTB7-Th-based multi-non-fullerene solar cells enabled by the working mechanism of the coexisting alloy-like structure and energy transfer model Oh, Sora; Song, Chang Eun; Lee, Taeho Journal of Materials Chemistry A, Vol. 7, Issue 38 https://doi.org/10.1039/c9ta07919j	journal	January 2019
A non-fullerene acceptor based on alkylphenyl substituted benzodithiophene for high efficiency polymer solar cells with a small voltage loss and excellent stability Guo, Qing; Zhu, Xiaoqian; Dong, Xingliang Journal of Materials Chemistry A, Vol. 7, Issue 42 https://doi.org/10.1039/c9ta08636f	journal	January 2019
Non-halogenated-solvent-processed highly efficient organic solar cells with a record open circuit voltage enabled by noncovalently locked novel polymer donors Guo, Hui; Zhang, Youdi; Chen, Lie Journal of Materials Chemistry A, Vol. 7, Issue 48 https://doi.org/10.1039/c9ta10624c	journal	January 2019
High-efficiency ternary nonfullerene polymer solar cells with increased phase purity and reduced nonradiative energy loss Zhang, Cai'e; Jiang, Pengcheng; Zhou, Xiaobo Journal of Materials Chemistry A, Vol. 8, Issue 4 https://doi.org/10.1039/c9ta12029g	journal	January 2020
High-performance non-fullerene polymer solar cells based on naphthobistriazole wide bandgap donor copolymers Li, Li; Liu, Gongchu; Zhang, Jie Journal of Materials Chemistry C, Vol. 7, Issue 16 https://doi.org/10.1039/c9tc00403c	journal	January 2019
A novel 9 H -indeno[1,2- b ]pyrazine-2,3-dicarbonitrile end group for an efficient non-fullerene small molecule acceptor Gao, Wei; Zhang, Miao; Chen, Zhanxiang Journal of Materials Chemistry C, Vol. 7, Issue 32 https://doi.org/10.1039/c9tc01214a	journal	January 2019
Fullerene-free polymer solar cells enabled with a PhI-based wide band gap donor polymer: promoting efficiencies via acceptor screening and device engineering Meng, Huifeng; Li, Yongchun; Pang, Bo Journal of Materials Chemistry C, Vol. 7, Issue 27 https://doi.org/10.1039/c9tc01932d	journal	January 2019
Simply planarizing nonfused perylene diimide based acceptors toward promising non-fullerene solar cells Bian, Gao-Feng; Zhao, Feng; Lau, Tsz-Ki Journal of Materials Chemistry C, Vol. 7, Issue 26 https://doi.org/10.1039/c9tc02013f	journal	January 2019
Light manipulating electrode based on high optical haze aluminum-doped zinc oxide for highly efficient indium-tin-oxide free organic solar cells with over 13% efficiency Rong, Qikun; Zhao, Jie; Yu, Hui Journal of Materials Chemistry C, Vol. 7, Issue 28 https://doi.org/10.1039/c9tc02189b	journal	January 2019
Side-chain engineering of wide-bandgap polymers based on benzo[1,2- b :4,5- b ′]dithiophene and [2,2′-bithiophene]-4,4′-dicarboxylate for fullerene-free organic solar cells Wang, Qi; Li, Miaomiao; Sui, Ying Journal of Materials Chemistry C, Vol. 7, Issue 31 https://doi.org/10.1039/c9tc02296a	journal	January 2019
Thiophene copolymer for 1 V high open-circuit voltage semitransparent photovoltaic devices Wang, Xiangkun; Yao, Yifeng; Jing, Xin Journal of Materials Chemistry C, Vol. 7, Issue 35 https://doi.org/10.1039/c9tc03230d	journal	January 2019
Thiazolothienyl imide-based wide bandgap copolymers for efficient polymer solar cells Shi, Yongqiang; Tang, Yumin; Yang, Kun Journal of Materials Chemistry C, Vol. 7, Issue 36 https://doi.org/10.1039/c9tc03301g	journal	January 2019
Improving the photovoltaic performance of fluorinated 2,2′-bithiophene core-based D(A–Ar) ₂ type small molecules via strategically end-capped heteroaromatic substitution Li, Min; Wang, Shichao; Bao, Chengjia Journal of Materials Chemistry C, Vol. 7, Issue 39 https://doi.org/10.1039/c9tc03577j	journal	January 2019
A distorted lactam unit with intramolecular hydrogen bonds as the electron donor of polymer solar cells Wang, Hua-Chun; Ren, Minrun; Cao, Jian Journal of Materials Chemistry C, Vol. 7, Issue 39 https://doi.org/10.1039/c9tc04014e	journal	January 2019
Optimization of processing solvent and film morphology to achieve efficient non-fullerene polymer solar cells processed in air An, Kang; Zhong, Wenkai; Ying, Lei Journal of Materials Chemistry C, Vol. 8, Issue 1 https://doi.org/10.1039/c9tc05358a	journal	January 2020
Subnaphthalocyanine triimides: potential three-dimensional solution processable acceptors for organic solar cells Cai, Chunsheng; Chen, Shanshan; Li, Li Journal of Materials Chemistry C, Vol. 8, Issue 6 https://doi.org/10.1039/c9tc06238f	journal	January 2020
A relatively wide-bandgap and air-stable donor polymer for fabrication of efficient semitransparent and tandem organic photovoltaics Tavakoli, Mohammad Mahdi; Po, Riccardo; Bianchi, Gabriele Proceedings of the National Academy of Sciences, Vol. 116, Issue 44 https://doi.org/10.1073/pnas.1907495116	journal	October 2019
The side chain effects on TPD-based copolymers: the linear chain leads to a higher j _sc Tao, Qiang; Fu, Yafen; Liu, Qian Journal of Macromolecular Science, Part A, Vol. 56, Issue 10 https://doi.org/10.1080/10601325.2019.1617636	journal	May 2019
Performance enhancement of small molecular solar cells via luminescent sensitizer 4,5-bis(carbazol-9-yl)-1,2-dicyanobenzene (2CzPN) Zheng, Yan-Qiong; Yu, Jun-Le; Li, Wei-Guang Journal of Physics D: Applied Physics, Vol. 53, Issue 12 https://doi.org/10.1088/1361-6463/ab4c07	journal	January 2020
A review of non-fullerene polymer solar cells: from device physics to morphology control Gurney, Robert S.; Lidzey, David G.; Wang, Tao Reports on Progress in Physics, Vol. 82, Issue 3 https://doi.org/10.1088/1361-6633/ab0530	journal	February 2019
Novel 2D material from AMQS-based defect engineering for efficient and stable organic solar cells Wang, Zhongqiang; Wang, Zhiyuan; Wang, Zongtao 2D Materials, Vol. 6, Issue 4 https://doi.org/10.1088/2053-1583/ab277d	journal	July 2019
Scalable fabrication of organic solar cells based on non-fullerene acceptors Gertsen, Anders S.; Castro, Marcial Fernández; Søndergaard, Roar R. Flexible and Printed Electronics, Vol. 5, Issue 1 https://doi.org/10.1088/2058-8585/ab5f57	journal	January 2020
Effects of Alkoxy and Fluorine Atom Substitution of Donor Molecules on the Morphology and Photovoltaic Performance of All Small Molecule Organic Solar Cells Qiu, Beibei; Chen, Shanshan; Xue, Lingwei Frontiers in Chemistry, Vol. 6 https://doi.org/10.3389/fchem.2018.00413	journal	September 2018
PffBT4T-2OD Based Solar Cells with Aryl-Substituted N-Methyl-Fulleropyrrolidine Acceptors Gaspar, Hugo; Figueira, Flávio; Strutyński, Karol Materials, Vol. 12, Issue 24 https://doi.org/10.3390/ma12244100	journal	December 2019