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Title: Effect of the Molecular Configuration of Perylene Diimide Acceptors on Charge Transfer and Device Performance

Abstract

Three perylene diimides (PDI)-based small molecules, T2-SePDI2, T3B-SePDI3, and T4B-SePDI4, with different molecular configurations are synthesized. Due to a large steric hindrance, the molecular configuration of T3B-SePDI3 is the most distorted, followed by T4BSePDI4, while T2-SePDI2 shows the smallest steric hindrance. Inverted bulk heterojunction solar cells based on T3B-SePDI3 and PBDB-T show the highest power conversion efficiency (PCE) of 5.82% with an open-circuit voltage of 0.98 V, a high short-circuit current density of 10.52 mA/cm2, and a fill factor of 56.31%. The PCEs of the T2-SePDI2- and T4B-SePDI4- based devices are 4.10% and 5.10%, respectively. Furthermore, the results demonstrate that the molecular configuration of the PDI-based small molecule acceptor is critical and that increasing the steric hindrance is helpful in suppressing aggregation and improving device performance.

Authors:
 [1];  [1];  [1];  [1];  [2]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1]
  1. Southern Univ. of Science and Technology, Shenzhen (People's Republic of China)
  2. Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, P. R. China
  3. Argonne National Lab. (ANL), Lemont, IL (United States); The Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1440754
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Energy Materials
Additional Journal Information:
Journal Volume: 1; Journal Issue: 2; Journal ID: ISSN 2574-0962
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; charge transfer; molecular configuration; non-fullerene acceptor; organic solar cells; perylene diimides; steric hindrance

Citation Formats

Qu, Jianfei, Mu, Zhao, Lai, Hanjian, Xie, Mo, Liu, Longzhu, Lu, Wei, Chen, Wei, and He, Feng. Effect of the Molecular Configuration of Perylene Diimide Acceptors on Charge Transfer and Device Performance. United States: N. p., 2018. Web. doi:10.1021/acsaem.7b00277.
Qu, Jianfei, Mu, Zhao, Lai, Hanjian, Xie, Mo, Liu, Longzhu, Lu, Wei, Chen, Wei, & He, Feng. Effect of the Molecular Configuration of Perylene Diimide Acceptors on Charge Transfer and Device Performance. United States. doi:10.1021/acsaem.7b00277.
Qu, Jianfei, Mu, Zhao, Lai, Hanjian, Xie, Mo, Liu, Longzhu, Lu, Wei, Chen, Wei, and He, Feng. Thu . "Effect of the Molecular Configuration of Perylene Diimide Acceptors on Charge Transfer and Device Performance". United States. doi:10.1021/acsaem.7b00277.
@article{osti_1440754,
title = {Effect of the Molecular Configuration of Perylene Diimide Acceptors on Charge Transfer and Device Performance},
author = {Qu, Jianfei and Mu, Zhao and Lai, Hanjian and Xie, Mo and Liu, Longzhu and Lu, Wei and Chen, Wei and He, Feng},
abstractNote = {Three perylene diimides (PDI)-based small molecules, T2-SePDI2, T3B-SePDI3, and T4B-SePDI4, with different molecular configurations are synthesized. Due to a large steric hindrance, the molecular configuration of T3B-SePDI3 is the most distorted, followed by T4BSePDI4, while T2-SePDI2 shows the smallest steric hindrance. Inverted bulk heterojunction solar cells based on T3B-SePDI3 and PBDB-T show the highest power conversion efficiency (PCE) of 5.82% with an open-circuit voltage of 0.98 V, a high short-circuit current density of 10.52 mA/cm2, and a fill factor of 56.31%. The PCEs of the T2-SePDI2- and T4B-SePDI4- based devices are 4.10% and 5.10%, respectively. Furthermore, the results demonstrate that the molecular configuration of the PDI-based small molecule acceptor is critical and that increasing the steric hindrance is helpful in suppressing aggregation and improving device performance.},
doi = {10.1021/acsaem.7b00277},
journal = {ACS Applied Energy Materials},
number = 2,
volume = 1,
place = {United States},
year = {Thu Jan 25 00:00:00 EST 2018},
month = {Thu Jan 25 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on January 25, 2019
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