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Title: From Binary to Ternary: Improving the External Quantum Efficiency of Small-Molecule Acceptor-Based Polymer Solar Cells with a Minute Amount of Fullerene Sensitization

Authors:
 [1];  [2];  [3];  [4];  [5];  [4];  [6];  [4];  [3]; ORCiD logo [2]
  1. State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 China, Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190 China
  2. State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 China, School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Beijing 100083 China
  3. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049 China
  4. CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 China
  5. State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 China
  6. Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190 China
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1378803
Grant/Contract Number:
AC02-05CH11231
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 17; Related Information: CHORUS Timestamp: 2017-09-06 13:57:51; Journal ID: ISSN 1614-6832
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Chen, Yu, Qin, Yunpeng, Wu, Yang, Li, Cheng, Yao, Huifeng, Liang, Ningning, Wang, Xiaochen, Li, Weiwei, Ma, Wei, and Hou, Jianhui. From Binary to Ternary: Improving the External Quantum Efficiency of Small-Molecule Acceptor-Based Polymer Solar Cells with a Minute Amount of Fullerene Sensitization. Germany: N. p., 2017. Web. doi:10.1002/aenm.201700328.
Chen, Yu, Qin, Yunpeng, Wu, Yang, Li, Cheng, Yao, Huifeng, Liang, Ningning, Wang, Xiaochen, Li, Weiwei, Ma, Wei, & Hou, Jianhui. From Binary to Ternary: Improving the External Quantum Efficiency of Small-Molecule Acceptor-Based Polymer Solar Cells with a Minute Amount of Fullerene Sensitization. Germany. doi:10.1002/aenm.201700328.
Chen, Yu, Qin, Yunpeng, Wu, Yang, Li, Cheng, Yao, Huifeng, Liang, Ningning, Wang, Xiaochen, Li, Weiwei, Ma, Wei, and Hou, Jianhui. 2017. "From Binary to Ternary: Improving the External Quantum Efficiency of Small-Molecule Acceptor-Based Polymer Solar Cells with a Minute Amount of Fullerene Sensitization". Germany. doi:10.1002/aenm.201700328.
@article{osti_1378803,
title = {From Binary to Ternary: Improving the External Quantum Efficiency of Small-Molecule Acceptor-Based Polymer Solar Cells with a Minute Amount of Fullerene Sensitization},
author = {Chen, Yu and Qin, Yunpeng and Wu, Yang and Li, Cheng and Yao, Huifeng and Liang, Ningning and Wang, Xiaochen and Li, Weiwei and Ma, Wei and Hou, Jianhui},
abstractNote = {},
doi = {10.1002/aenm.201700328},
journal = {Advanced Energy Materials},
number = 17,
volume = 7,
place = {Germany},
year = 2017,
month = 5
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on May 9, 2018
Publisher's Accepted Manuscript

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  • Perylenediimide (PDI) small molecule acceptor (SMA) crystallinity and donor polymer aggregation and crystallinity effects on bulk-heterojunction microstructure and polymer solar cell (PSC) performance are systematically investigated. Two highperformance polymers, semicrystalline poly[5-(2-hexyldodecyl)-4Hthieno[3,4-c]pyrrole-4,6(5H)-dione-1,3-yl-alt-4,4''dodecyl-2,2':5',2''- terthiophene-5,5''-diyl] (PTPD3T or D1) and amorphous poly{4,8- bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene- 2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-2-carboxylate-2,6-diyl) (PBDTT-FTTE or D2), are paired with three PDI-based SMAs (A1-A3) of differing crystallinity (A1 is the most, A3 is the least crystalline). The resulting PSC performance trends are strikingly different from those of typical fullerene-based PSCs and are highly material-dependent. The present trends reflect synergistic aggregation propensities between the SMA and polymer components. Importantly, the active layer morphology is templatedmore » by the PDI in some blends and by the polymer in others, with the latter largely governed by the polymer aggregation. Thus, PTPD3T templating capacity increases as self-aggregation increases (greater Mn), optimizing PSC performance with A2, while A3-based cells exhibit an inverse relationship between polymer aggregation and performance, which is dramatically different from fullerene-based PSCs. For PBDTT-FTTE, A2-based cells again deliver the highest PCEs of ~5%, but here both A2 and PBDTT-FTTE (medium Mn) template the morphology. Overall, the present results underscore the importance of nonfullerene acceptor aggregation for optimizing PSC performance and offer guidelines for pairing SMAs with acceptable donor polymers.« less
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