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Title: Improving the efficiencies of small molecule solar cells by solvent vapor annealing to enhance J-aggregation

Abstract

Here, we report highly efficient small molecule organic solar cells (SM-OSCs) based on a porphyrin derivative electron donor of ZnP2-DPP and an electron acceptor of [6,6]-phenyl-C 61-butyric acid methyl ester (PC 60BM) by using a solvent vapor annealing (SVA) method with a series of low boiling solvents. Absorption spectral studies indicate that carbon disulfide (CS 2) SVA induces J-aggregation in blend films accompanied by expanded and enhanced absorption which contributes largely to the fabrication of broader light response and larger short-circuit current (J SC) solar cell devices. In addition, we systematically analyze the relationship between the film morphology and device performance. Finally, the electronic study shows that the CS 2 SVA-treated device showed a higher exciton generation rate and enhanced carrier collection efficiency. And the morphology study indicates that the blend films treated with CS2 SVA exhibit tighter molecular packing, better crystallization and an appropriate phase separation length scale. In other words, these collective electronic and morphological features correlate well with the champion J SC, the fill factor (FF) and the power conversion efficiency (PCE) of the CS 2 treated devices.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4];  [5];  [6]; ORCiD logo [3]; ORCiD logo [4];  [2]; ORCiD logo [5];  [5]
  1. Guangdong Univ. of Technology (China); South China Univ. of Technology, Guangzhou (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Guangdong Univ. of Technology (China)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Massachusetts, Amherst, MA (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. South China Univ. of Technology, Guangzhou (China)
  6. Soochow University, Suzhou (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Key Research and Development Program of China; National Natural Science Foundation of China (NNSFC); US Department of the Navy, Office of Naval Research (ONR); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1599807
Alternate Identifier(s):
OSTI ID: 1543359
Grant/Contract Number:  
AC02-05CH11231; 2017YFA0206602; 51773065; 51861145301; 51473053; N00014-17-1-2241; AC02-05-CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry C
Additional Journal Information:
Journal Volume: 7; Journal Issue: 31; Journal ID: ISSN 2050-7526
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; J-aggregation; morphological features; solvent vapor annealing; small molecule

Citation Formats

Xiao, Liangang, Li, Zhengdong, Hu, Qin, Liu, Yawei, Zhong, Wenkai, Mei, Xueli, Russell, Thomas P., Liu, Yi, Min, Yong, Peng, Xiaobin, and Cao, Yong. Improving the efficiencies of small molecule solar cells by solvent vapor annealing to enhance J-aggregation. United States: N. p., 2019. Web. doi:10.1039/c9tc02630d.
Xiao, Liangang, Li, Zhengdong, Hu, Qin, Liu, Yawei, Zhong, Wenkai, Mei, Xueli, Russell, Thomas P., Liu, Yi, Min, Yong, Peng, Xiaobin, & Cao, Yong. Improving the efficiencies of small molecule solar cells by solvent vapor annealing to enhance J-aggregation. United States. doi:10.1039/c9tc02630d.
Xiao, Liangang, Li, Zhengdong, Hu, Qin, Liu, Yawei, Zhong, Wenkai, Mei, Xueli, Russell, Thomas P., Liu, Yi, Min, Yong, Peng, Xiaobin, and Cao, Yong. Wed . "Improving the efficiencies of small molecule solar cells by solvent vapor annealing to enhance J-aggregation". United States. doi:10.1039/c9tc02630d.
@article{osti_1599807,
title = {Improving the efficiencies of small molecule solar cells by solvent vapor annealing to enhance J-aggregation},
author = {Xiao, Liangang and Li, Zhengdong and Hu, Qin and Liu, Yawei and Zhong, Wenkai and Mei, Xueli and Russell, Thomas P. and Liu, Yi and Min, Yong and Peng, Xiaobin and Cao, Yong},
abstractNote = {Here, we report highly efficient small molecule organic solar cells (SM-OSCs) based on a porphyrin derivative electron donor of ZnP2-DPP and an electron acceptor of [6,6]-phenyl-C61-butyric acid methyl ester (PC60BM) by using a solvent vapor annealing (SVA) method with a series of low boiling solvents. Absorption spectral studies indicate that carbon disulfide (CS2) SVA induces J-aggregation in blend films accompanied by expanded and enhanced absorption which contributes largely to the fabrication of broader light response and larger short-circuit current (JSC) solar cell devices. In addition, we systematically analyze the relationship between the film morphology and device performance. Finally, the electronic study shows that the CS2 SVA-treated device showed a higher exciton generation rate and enhanced carrier collection efficiency. And the morphology study indicates that the blend films treated with CS2 SVA exhibit tighter molecular packing, better crystallization and an appropriate phase separation length scale. In other words, these collective electronic and morphological features correlate well with the champion JSC, the fill factor (FF) and the power conversion efficiency (PCE) of the CS2 treated devices.},
doi = {10.1039/c9tc02630d},
journal = {Journal of Materials Chemistry C},
number = 31,
volume = 7,
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Powering the Future with Liquid Sunshine
journal, October 2018


The effect of high external pressure on the structure and stability of MOF α-Mg 3 (HCOO) 6 probed by in situ Raman and FT-IR spectroscopy
journal, January 2015

  • Mao, Haiyan; Xu, Jun; Hu, Yue
  • Journal of Materials Chemistry A, Vol. 3, Issue 22
  • DOI: 10.1039/C5TA00476D

The path towards sustainable energy
journal, December 2016

  • Chu, Steven; Cui, Yi; Liu, Nian
  • Nature Materials, Vol. 16, Issue 1
  • DOI: 10.1038/nmat4834

Fast preparation of carbon spheres from enzymatic hydrolysis lignin: Effects of hydrothermal carbonization conditions
journal, June 2018


A Printable Organic Cathode Interlayer Enables over 13% Efficiency for 1-cm2 Organic Solar Cells
journal, January 2019


Reducing the efficiency–stability–cost gap of organic photovoltaics with highly efficient and stable small molecule acceptor ternary solar cells
journal, November 2016

  • Baran, Derya; Ashraf, Raja Shahid; Hanifi, David A.
  • Nature Materials, Vol. 16, Issue 3
  • DOI: 10.1038/nmat4797

Efficient Polymer Solar Cells Based on Non-fullerene Acceptors with Potential Device Lifetime Approaching 10 Years
journal, January 2019


Small is Powerful: Recent Progress in Solution-Processed Small Molecule Solar Cells
journal, January 2017

  • Collins, Samuel D.; Ran, Niva A.; Heiber, Michael C.
  • Advanced Energy Materials, Vol. 7, Issue 10
  • DOI: 10.1002/aenm.201602242

D-A structural protean small molecule donor materials for solution-processed organic solar cells
journal, November 2017


A-D-A Type Small Molecules Based on Boron Dipyrromethene for Solution-Processed Organic Solar Cells
journal, June 2015

  • Xiao, Liangang; Wang, Hongda; Gao, Ke
  • Chemistry - An Asian Journal, Vol. 10, Issue 7
  • DOI: 10.1002/asia.201500382

Non-Basic High-Performance Molecules for Solution-Processed Organic Solar Cells
journal, June 2012

  • van der Poll, Thomas S.; Love, John A.; Nguyen, Thuc-Quyen
  • Advanced Materials, Vol. 24, Issue 27
  • DOI: 10.1002/adma.201201127

Highly efficient halogen-free solvent processed small-molecule organic solar cells enabled by material design and device engineering
journal, January 2017

  • Wan, Jiahui; Xu, Xiaopeng; Zhang, Guangjun
  • Energy & Environmental Science, Vol. 10, Issue 8
  • DOI: 10.1039/C7EE00805H

Fluorination-enabled optimal morphology leads to over 11% efficiency for inverted small-molecule organic solar cells
journal, December 2016

  • Deng, Dan; Zhang, Yajie; Zhang, Jianqi
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms13740

A Series of Simple Oligomer-like Small Molecules Based on Oligothiophenes for Solution-Processed Solar Cells with High Efficiency
journal, March 2015

  • Kan, Bin; Li, Miaomiao; Zhang, Qian
  • Journal of the American Chemical Society, Vol. 137, Issue 11
  • DOI: 10.1021/jacs.5b00305

A low-bandgap dimeric porphyrin molecule for 10% efficiency solar cells with small photon energy loss
journal, January 2018

  • Xiao, Liangang; Lai, Tianqi; Liu, Xiang
  • Journal of Materials Chemistry A, Vol. 6, Issue 38
  • DOI: 10.1039/C8TA05903A

Solution-processed small-molecule solar cells with 6.7% efficiency
journal, November 2011

  • Sun, Yanming; Welch, Gregory C.; Leong, Wei Lin
  • Nature Materials, Vol. 11, Issue 1, p. 44-48
  • DOI: 10.1038/nmat3160

Series of Multifluorine Substituted Oligomers for Organic Solar Cells with Efficiency over 9% and Fill Factor of 0.77 by Combination Thermal and Solvent Vapor Annealing
journal, June 2016

  • Wang, Jin-Liang; Liu, Kai-Kai; Yan, Jun
  • Journal of the American Chemical Society, Vol. 138, Issue 24
  • DOI: 10.1021/jacs.6b03495

High efficiency and stability small molecule solar cells developed by bulk microstructure fine-tuning
journal, October 2016


Time-Dependent Morphology Evolution of Solution-Processed Small Molecule Solar Cells during Solvent Vapor Annealing
journal, March 2016

  • Min, Jie; Jiao, Xuechen; Ata, Ibrahim
  • Advanced Energy Materials, Vol. 6, Issue 10
  • DOI: 10.1002/aenm.201502579

H- and J-Aggregate Behavior in Polymeric Semiconductors
journal, April 2014


Molecular Order Control of Non-fullerene Acceptors for High-Efficiency Polymer Solar Cells
journal, March 2019


Molecular Design Principle of All-organic Dyes for Dye-Sensitized Solar Cells
journal, March 2013

  • Kim, Bong-Gi; Chung, Kyeongwoon; Kim, Jinsang
  • Chemistry - A European Journal, Vol. 19, Issue 17
  • DOI: 10.1002/chem.201204343

Enhanced Emission and Its Switching in Fluorescent Organic Nanoparticles
journal, December 2002

  • An, Byeong-Kwan; Kwon, Soon-Ki; Jung, Sang-Don
  • Journal of the American Chemical Society, Vol. 124, Issue 48
  • DOI: 10.1021/ja0269082

J-aggregation of a squaraine dye and its application in organic photovoltaic cells
journal, January 2013

  • Chen, Guo; Sasabe, Hisahiro; Lu, Wei
  • Journal of Materials Chemistry C, Vol. 1, Issue 40
  • DOI: 10.1039/c3tc31243g

Porphyrin-Tape/C 60 Organic Photodetectors with 6.5% External Quantum Efficiency in the Near Infrared
journal, April 2010

  • Zimmerman, Jeramy D.; Diev, Vyacheslav V.; Hanson, Kenneth
  • Advanced Materials, Vol. 22, Issue 25
  • DOI: 10.1002/adma.200904341

High-detectivity panchromatic photodetectors for the near infrared region based on a dimeric porphyrin small molecule
journal, January 2018

  • Xiao, Liangang; Chen, Song; Chen, Xuebin
  • Journal of Materials Chemistry C, Vol. 6, Issue 13
  • DOI: 10.1039/C8TC00270C

Near-IR Absorbing D–A–D Zn-Porphyrin-Based Small-Molecule Donors for Organic Solar Cells with Low-Voltage Loss
journal, January 2019

  • Cuesta, Virginia; Singhal, Rahul; de la Cruz, Pilar
  • ACS Applied Materials & Interfaces, Vol. 11, Issue 7
  • DOI: 10.1021/acsami.8b20917

Deep Absorbing Porphyrin Small Molecule for High-Performance Organic Solar Cells with Very Low Energy Losses
journal, June 2015

  • Gao, Ke; Li, Lisheng; Lai, Tianqi
  • Journal of the American Chemical Society, Vol. 137, Issue 23
  • DOI: 10.1021/jacs.5b03740

Modifying the Chemical Structure of a Porphyrin Small Molecule with Benzothiophene Groups for the Reproducible Fabrication of High Performance Solar Cells
journal, February 2017

  • Liang, Tianxiang; Xiao, Liangang; Gao, Ke
  • ACS Applied Materials & Interfaces, Vol. 9, Issue 8
  • DOI: 10.1021/acsami.6b15241

A visible-near-infrared absorbing A–π 2 –D–π 1 –D–π 2 –A type dimeric-porphyrin donor for high-performance organic solar cells
journal, January 2017

  • Chen, Song; Yan, Lei; Xiao, Liangang
  • Journal of Materials Chemistry A, Vol. 5, Issue 48
  • DOI: 10.1039/C7TA06217F

Conjugated D–A porphyrin dimers for solution-processed bulk-heterojunction organic solar cells
journal, January 2017

  • Lai, Tianqi; Chen, Xuebin; Xiao, Liangang
  • Chemical Communications, Vol. 53, Issue 37
  • DOI: 10.1039/C7CC00489C

An Electron Acceptor with Porphyrin and Perylene Bisimides for Efficient Non-Fullerene Solar Cells
journal, January 2017

  • Zhang, Andong; Li, Cheng; Yang, Fan
  • Angewandte Chemie International Edition, Vol. 56, Issue 10
  • DOI: 10.1002/anie.201612090

Phenylene-bridged perylenediimide-porphyrin acceptors for non-fullerene organic solar cells
journal, January 2018

  • Zhang, Quanquan; Xu‡, Xiaopeng; Chen‡, Song
  • Sustainable Energy & Fuels, Vol. 2, Issue 12
  • DOI: 10.1039/C8SE00427G

Near-Infrared Harvesting Fullerene-Free All-Small-Molecule Organic Solar Cells Based on Porphyrin Donors
journal, March 2018


High-Performance Near-Infrared Absorbing n-Type Porphyrin Acceptor for Organic Solar Cells
journal, October 2018

  • Hadmojo, Wisnu Tantyo; Lee, Un-Hak; Yim, Dajeong
  • ACS Applied Materials & Interfaces, Vol. 10, Issue 48
  • DOI: 10.1021/acsami.8b14577

A near-infrared porphyrin-based electron acceptor for non-fullerene organic solar cells
journal, March 2018


Molecular/polymeric metallaynes and related molecules: Solar cell materials and devices
journal, October 2018


Ternary Solar Cells Based on Two Small Molecule Donors with Same Conjugated Backbone: The Role of Good Miscibility and Hole Relay Process
journal, August 2017

  • Xiao, Liangang; Liang, Tianxiang; Gao, Ke
  • ACS Applied Materials & Interfaces, Vol. 9, Issue 35
  • DOI: 10.1021/acsami.7b07960

A complementary absorption small molecule for efficient ternary organic solar cells
journal, January 2016

  • Xiao, Liangang; Gao, Ke; Zhang, Yangdong
  • Journal of Materials Chemistry A, Vol. 4, Issue 14
  • DOI: 10.1039/C6TA00783J

Systematic Investigation of Porphyrin-Thiophene Conjugates for Ternary Bulk Heterojunction Solar Cells
journal, July 2016

  • Keawsongsaeng, Wittawat; Gasiorowski, Jacek; Denk, Patrick
  • Advanced Energy Materials, Vol. 6, Issue 20
  • DOI: 10.1002/aenm.201600957

Panchromatic ternary organic solar cells with 9.44% efficiency incorporating porphyrin-based donors
journal, January 2018

  • Vartanian, Maida; de la Cruz, Pilar; Biswas, Subhayan
  • Nanoscale, Vol. 10, Issue 25
  • DOI: 10.1039/C8NR02856G

Panchromatic Ternary Organic Solar Cells with Porphyrin Dimers and Absorption-Complementary Benzodithiophene-based Small Molecules
journal, January 2019

  • Piradi, Venkatesh; Xu, Xiaopeng; Wang, Zaiyu
  • ACS Applied Materials & Interfaces, Vol. 11, Issue 6
  • DOI: 10.1021/acsami.8b19240

Solution-processed organic tandem solar cells with power conversion efficiencies >12%
journal, December 2016


High-Performance Polymer Tandem Solar Cells Employing a New n-Type Conjugated Polymer as an Interconnecting Layer
journal, April 2016


Dimeric Porphyrin Small Molecules for Efficient Organic Solar Cells with High Photoelectron Response in the Near-Infrared Region
journal, December 2017

  • Lai, Tianqi; Xiao, Liangang; Deng, Ke
  • ACS Applied Materials & Interfaces, Vol. 10, Issue 1
  • DOI: 10.1021/acsami.7b15506

Water/alcohol soluble conjugated polymers for the interface engineering of highly efficient polymer light-emitting diodes and polymer solar cells
journal, January 2015

  • Hu, Zhicheng; Zhang, Kai; Huang, Fei
  • Chemical Communications, Vol. 51, Issue 26
  • DOI: 10.1039/C4CC09433F

Superradiance in Molecular H Aggregates
journal, December 2003


Device Physics of PolymerFullerene Bulk Heterojunction Solar Cells
journal, June 2007

  • Blom, P. W. M.; Mihailetchi, V. D.; Koster, L. J. A.
  • Advanced Materials, Vol. 19, Issue 12, p. 1551-1566
  • DOI: 10.1002/adma.200601093

New Terthiophene-Conjugated Porphyrin Donors for Highly Efficient Organic Solar Cells
journal, October 2016

  • Xiao, Liangang; Chen, Song; Gao, Ke
  • ACS Applied Materials & Interfaces, Vol. 8, Issue 44
  • DOI: 10.1021/acsami.6b09790

Scherrer grain-size analysis adapted to grazing-incidence scattering with area detectors
journal, October 2009


    Works referencing / citing this record:

    Device Physics of PolymerFullerene Bulk Heterojunction Solar Cells
    journal, June 2007

    • Blom, P. W. M.; Mihailetchi, V. D.; Koster, L. J. A.
    • Advanced Materials, Vol. 19, Issue 12, p. 1551-1566
    • DOI: 10.1002/adma.200601093

    Porphyrin-Tape/C 60 Organic Photodetectors with 6.5% External Quantum Efficiency in the Near Infrared
    journal, April 2010

    • Zimmerman, Jeramy D.; Diev, Vyacheslav V.; Hanson, Kenneth
    • Advanced Materials, Vol. 22, Issue 25
    • DOI: 10.1002/adma.200904341

    Non-Basic High-Performance Molecules for Solution-Processed Organic Solar Cells
    journal, June 2012

    • van der Poll, Thomas S.; Love, John A.; Nguyen, Thuc-Quyen
    • Advanced Materials, Vol. 24, Issue 27
    • DOI: 10.1002/adma.201201127

    High-Performance Polymer Tandem Solar Cells Employing a New n-Type Conjugated Polymer as an Interconnecting Layer
    journal, April 2016


    Time-Dependent Morphology Evolution of Solution-Processed Small Molecule Solar Cells during Solvent Vapor Annealing
    journal, March 2016

    • Min, Jie; Jiao, Xuechen; Ata, Ibrahim
    • Advanced Energy Materials, Vol. 6, Issue 10
    • DOI: 10.1002/aenm.201502579

    Systematic Investigation of Porphyrin-Thiophene Conjugates for Ternary Bulk Heterojunction Solar Cells
    journal, July 2016

    • Keawsongsaeng, Wittawat; Gasiorowski, Jacek; Denk, Patrick
    • Advanced Energy Materials, Vol. 6, Issue 20
    • DOI: 10.1002/aenm.201600957

    Small is Powerful: Recent Progress in Solution-Processed Small Molecule Solar Cells
    journal, January 2017

    • Collins, Samuel D.; Ran, Niva A.; Heiber, Michael C.
    • Advanced Energy Materials, Vol. 7, Issue 10
    • DOI: 10.1002/aenm.201602242

    An Electron Acceptor with Porphyrin and Perylene Bisimides for Efficient Non-Fullerene Solar Cells
    journal, January 2017

    • Zhang, Andong; Li, Cheng; Yang, Fan
    • Angewandte Chemie International Edition, Vol. 56, Issue 10
    • DOI: 10.1002/anie.201612090

    A-D-A Type Small Molecules Based on Boron Dipyrromethene for Solution-Processed Organic Solar Cells
    journal, June 2015

    • Xiao, Liangang; Wang, Hongda; Gao, Ke
    • Chemistry - An Asian Journal, Vol. 10, Issue 7
    • DOI: 10.1002/asia.201500382

    Molecular Design Principle of All-organic Dyes for Dye-Sensitized Solar Cells
    journal, March 2013

    • Kim, Bong-Gi; Chung, Kyeongwoon; Kim, Jinsang
    • Chemistry - A European Journal, Vol. 19, Issue 17
    • DOI: 10.1002/chem.201204343

    A near-infrared porphyrin-based electron acceptor for non-fullerene organic solar cells
    journal, March 2018


    D-A structural protean small molecule donor materials for solution-processed organic solar cells
    journal, November 2017


    Molecular/polymeric metallaynes and related molecules: Solar cell materials and devices
    journal, October 2018


    Powering the Future with Liquid Sunshine
    journal, October 2018


    Efficient Polymer Solar Cells Based on Non-fullerene Acceptors with Potential Device Lifetime Approaching 10 Years
    journal, January 2019


    A Printable Organic Cathode Interlayer Enables over 13% Efficiency for 1-cm2 Organic Solar Cells
    journal, January 2019


    Molecular Order Control of Non-fullerene Acceptors for High-Efficiency Polymer Solar Cells
    journal, March 2019


    High efficiency and stability small molecule solar cells developed by bulk microstructure fine-tuning
    journal, October 2016


    New Terthiophene-Conjugated Porphyrin Donors for Highly Efficient Organic Solar Cells
    journal, October 2016

    • Xiao, Liangang; Chen, Song; Gao, Ke
    • ACS Applied Materials & Interfaces, Vol. 8, Issue 44
    • DOI: 10.1021/acsami.6b09790

    Modifying the Chemical Structure of a Porphyrin Small Molecule with Benzothiophene Groups for the Reproducible Fabrication of High Performance Solar Cells
    journal, February 2017

    • Liang, Tianxiang; Xiao, Liangang; Gao, Ke
    • ACS Applied Materials & Interfaces, Vol. 9, Issue 8
    • DOI: 10.1021/acsami.6b15241

    Ternary Solar Cells Based on Two Small Molecule Donors with Same Conjugated Backbone: The Role of Good Miscibility and Hole Relay Process
    journal, August 2017

    • Xiao, Liangang; Liang, Tianxiang; Gao, Ke
    • ACS Applied Materials & Interfaces, Vol. 9, Issue 35
    • DOI: 10.1021/acsami.7b07960

    Dimeric Porphyrin Small Molecules for Efficient Organic Solar Cells with High Photoelectron Response in the Near-Infrared Region
    journal, December 2017

    • Lai, Tianqi; Xiao, Liangang; Deng, Ke
    • ACS Applied Materials & Interfaces, Vol. 10, Issue 1
    • DOI: 10.1021/acsami.7b15506

    High-Performance Near-Infrared Absorbing n-Type Porphyrin Acceptor for Organic Solar Cells
    journal, October 2018

    • Hadmojo, Wisnu Tantyo; Lee, Un-Hak; Yim, Dajeong
    • ACS Applied Materials & Interfaces, Vol. 10, Issue 48
    • DOI: 10.1021/acsami.8b14577

    Panchromatic Ternary Organic Solar Cells with Porphyrin Dimers and Absorption-Complementary Benzodithiophene-based Small Molecules
    journal, January 2019

    • Piradi, Venkatesh; Xu, Xiaopeng; Wang, Zaiyu
    • ACS Applied Materials & Interfaces, Vol. 11, Issue 6
    • DOI: 10.1021/acsami.8b19240

    Near-IR Absorbing D–A–D Zn-Porphyrin-Based Small-Molecule Donors for Organic Solar Cells with Low-Voltage Loss
    journal, January 2019

    • Cuesta, Virginia; Singhal, Rahul; de la Cruz, Pilar
    • ACS Applied Materials & Interfaces, Vol. 11, Issue 7
    • DOI: 10.1021/acsami.8b20917

    Near-Infrared Harvesting Fullerene-Free All-Small-Molecule Organic Solar Cells Based on Porphyrin Donors
    journal, March 2018


    Enhanced Emission and Its Switching in Fluorescent Organic Nanoparticles
    journal, December 2002

    • An, Byeong-Kwan; Kwon, Soon-Ki; Jung, Sang-Don
    • Journal of the American Chemical Society, Vol. 124, Issue 48
    • DOI: 10.1021/ja0269082

    A Series of Simple Oligomer-like Small Molecules Based on Oligothiophenes for Solution-Processed Solar Cells with High Efficiency
    journal, March 2015

    • Kan, Bin; Li, Miaomiao; Zhang, Qian
    • Journal of the American Chemical Society, Vol. 137, Issue 11
    • DOI: 10.1021/jacs.5b00305

    Deep Absorbing Porphyrin Small Molecule for High-Performance Organic Solar Cells with Very Low Energy Losses
    journal, June 2015

    • Gao, Ke; Li, Lisheng; Lai, Tianqi
    • Journal of the American Chemical Society, Vol. 137, Issue 23
    • DOI: 10.1021/jacs.5b03740

    Series of Multifluorine Substituted Oligomers for Organic Solar Cells with Efficiency over 9% and Fill Factor of 0.77 by Combination Thermal and Solvent Vapor Annealing
    journal, June 2016

    • Wang, Jin-Liang; Liu, Kai-Kai; Yan, Jun
    • Journal of the American Chemical Society, Vol. 138, Issue 24
    • DOI: 10.1021/jacs.6b03495

    Fluorination-enabled optimal morphology leads to over 11% efficiency for inverted small-molecule organic solar cells
    journal, December 2016

    • Deng, Dan; Zhang, Yajie; Zhang, Jianqi
    • Nature Communications, Vol. 7, Issue 1
    • DOI: 10.1038/ncomms13740

    Solution-processed small-molecule solar cells with 6.7% efficiency
    journal, November 2011

    • Sun, Yanming; Welch, Gregory C.; Leong, Wei Lin
    • Nature Materials, Vol. 11, Issue 1, p. 44-48
    • DOI: 10.1038/nmat3160

    Reducing the efficiency–stability–cost gap of organic photovoltaics with highly efficient and stable small molecule acceptor ternary solar cells
    journal, November 2016

    • Baran, Derya; Ashraf, Raja Shahid; Hanifi, David A.
    • Nature Materials, Vol. 16, Issue 3
    • DOI: 10.1038/nmat4797

    The path towards sustainable energy
    journal, December 2016

    • Chu, Steven; Cui, Yi; Liu, Nian
    • Nature Materials, Vol. 16, Issue 1
    • DOI: 10.1038/nmat4834

    Solution-processed organic tandem solar cells with power conversion efficiencies >12%
    journal, December 2016


    Fast preparation of carbon spheres from enzymatic hydrolysis lignin: Effects of hydrothermal carbonization conditions
    journal, June 2018


    J-aggregation of a squaraine dye and its application in organic photovoltaic cells
    journal, January 2013

    • Chen, Guo; Sasabe, Hisahiro; Lu, Wei
    • Journal of Materials Chemistry C, Vol. 1, Issue 40
    • DOI: 10.1039/c3tc31243g

    H- and J-Aggregate Behavior in Polymeric Semiconductors
    journal, April 2014