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Title: Fused perylene diimide-based polymeric acceptors with different $$\mathcal{π}$$-conjugation and molecular conformation in all polymer solar cells

Abstract

Two perylene diimide (PDI) based polymeric acceptors, PFPDIBT-TT2F and PFPDIT-TT2F, which consist of fused-PDI moieties (FPDIBT and FPDIT) and 3,3'-difluoro-2,2'-bithiophene (TT2F) units, has been designed and synthesized. Compared with the unfused-PDI polymer (PPDI-TT2F) as the control molecule, the influence of structural conformation and π-conjugation extension on the performance of all-polymer solar cells has been investigated. Due to both the extended π-conjugation and the torsional polymer skeleton, the device adopting PFPDIT-TT2F achieved an obviously improved PCE of 5.11% comparing with the devices using the other two polymeric acceptors. This study demonstrates that the fused PDIs bridged by a thiophene enables both extended π-conjugation and twisted molecular conformation, and the latter plays a dominant role in the improvement of device performance.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Nanjing Technical University (China)
  2. University of Nottingham, Ningbo (China)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Natural Science Foundation of Jiangsu Province; Natural Science Foundation of China
OSTI Identifier:
1876273
Grant/Contract Number:  
AC05-00OR22725; BK20191358; 22075135
Resource Type:
Accepted Manuscript
Journal Name:
Dyes and Pigments
Additional Journal Information:
Journal Volume: 204; Journal Issue: 1; Journal ID: ISSN 0143-7208
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Shen, Guangrui, Wang, Ling, Wu, Xia, Yuan, Peng, Tang, Yumin, Chen, Yumeng, Hang, Xiao-Chun, Chen, Zhi-Kuan, Zhang, Honghai, and Sun, Zhengyi. Fused perylene diimide-based polymeric acceptors with different $\mathcal{π}$-conjugation and molecular conformation in all polymer solar cells. United States: N. p., 2022. Web. doi:10.1016/j.dyepig.2022.110462.
Shen, Guangrui, Wang, Ling, Wu, Xia, Yuan, Peng, Tang, Yumin, Chen, Yumeng, Hang, Xiao-Chun, Chen, Zhi-Kuan, Zhang, Honghai, & Sun, Zhengyi. Fused perylene diimide-based polymeric acceptors with different $\mathcal{π}$-conjugation and molecular conformation in all polymer solar cells. United States. https://doi.org/10.1016/j.dyepig.2022.110462
Shen, Guangrui, Wang, Ling, Wu, Xia, Yuan, Peng, Tang, Yumin, Chen, Yumeng, Hang, Xiao-Chun, Chen, Zhi-Kuan, Zhang, Honghai, and Sun, Zhengyi. Fri . "Fused perylene diimide-based polymeric acceptors with different $\mathcal{π}$-conjugation and molecular conformation in all polymer solar cells". United States. https://doi.org/10.1016/j.dyepig.2022.110462. https://www.osti.gov/servlets/purl/1876273.
@article{osti_1876273,
title = {Fused perylene diimide-based polymeric acceptors with different $\mathcal{π}$-conjugation and molecular conformation in all polymer solar cells},
author = {Shen, Guangrui and Wang, Ling and Wu, Xia and Yuan, Peng and Tang, Yumin and Chen, Yumeng and Hang, Xiao-Chun and Chen, Zhi-Kuan and Zhang, Honghai and Sun, Zhengyi},
abstractNote = {Two perylene diimide (PDI) based polymeric acceptors, PFPDIBT-TT2F and PFPDIT-TT2F, which consist of fused-PDI moieties (FPDIBT and FPDIT) and 3,3'-difluoro-2,2'-bithiophene (TT2F) units, has been designed and synthesized. Compared with the unfused-PDI polymer (PPDI-TT2F) as the control molecule, the influence of structural conformation and π-conjugation extension on the performance of all-polymer solar cells has been investigated. Due to both the extended π-conjugation and the torsional polymer skeleton, the device adopting PFPDIT-TT2F achieved an obviously improved PCE of 5.11% comparing with the devices using the other two polymeric acceptors. This study demonstrates that the fused PDIs bridged by a thiophene enables both extended π-conjugation and twisted molecular conformation, and the latter plays a dominant role in the improvement of device performance.},
doi = {10.1016/j.dyepig.2022.110462},
journal = {Dyes and Pigments},
number = 1,
volume = 204,
place = {United States},
year = {Fri Jun 03 00:00:00 EDT 2022},
month = {Fri Jun 03 00:00:00 EDT 2022}
}

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