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Title: Electron Acceptors Based on α-Substituted Perylene Diimide (PDI) for Organic Solar Cells

Abstract

The ortho-position functionalized perylene diimide derivatives (αPPID, αPBDT) were synthesized and used as the electron acceptors in nonfullerene organic photovoltaics. Due to the good planarity of ortho-position functionalized PDI, the αPPID and αPBDT show strong tendency to form aggregate because of their enhanced intermolecular pie-pie interaction. Moreover, they maintain the pure domains and the same packing order as in the pure film if they are blended with PBT7-TH and the SCLC measurement also shows the high electron mobility. The inverted OPVs employing αPDI-based compounds as acceptor and PBT7-TH as the donor give the highest PCE of 4.92 % for αPBDT based device and 3.61 % for αPPID based device, which is 39 % and 4 % higher than that for their counterpart βPBDT and βPPID. The charge separation study shows the more efficient exciton dissociation at interfaces between PDI based compounds and PBT7-TH. In conclusion, the results suggest that compared to beta-substituted ones, alpha-substituted PDI derivatives are more promising electron acceptors for OPV.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1]
  1. Univ. of Chicago, IL (United States). James Franck Inst., Dept. of Chemistry
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
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); National Science Foundation (NSF); National Institute of Standards and Technology (NIST)
OSTI Identifier:
1245464
Grant/Contract Number:  
AC02-06CH11357; SC0001059; DMR-1263006; KC020301
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 28; Journal Issue: 4; Journal ID: ISSN 0897-4756
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 14 SOLAR ENERGY

Citation Formats

Zhao, Donglin, Wu, Qinghe, Cai, Zhengxu, Zheng, Tianyue, Chen, Wei, Lu, Jessica, and Yu, Luping. Electron Acceptors Based on α-Substituted Perylene Diimide (PDI) for Organic Solar Cells. United States: N. p., 2016. Web. doi:10.1021/acs.chemmater.5b04570.
Zhao, Donglin, Wu, Qinghe, Cai, Zhengxu, Zheng, Tianyue, Chen, Wei, Lu, Jessica, & Yu, Luping. Electron Acceptors Based on α-Substituted Perylene Diimide (PDI) for Organic Solar Cells. United States. doi:10.1021/acs.chemmater.5b04570.
Zhao, Donglin, Wu, Qinghe, Cai, Zhengxu, Zheng, Tianyue, Chen, Wei, Lu, Jessica, and Yu, Luping. Sat . "Electron Acceptors Based on α-Substituted Perylene Diimide (PDI) for Organic Solar Cells". United States. doi:10.1021/acs.chemmater.5b04570. https://www.osti.gov/servlets/purl/1245464.
@article{osti_1245464,
title = {Electron Acceptors Based on α-Substituted Perylene Diimide (PDI) for Organic Solar Cells},
author = {Zhao, Donglin and Wu, Qinghe and Cai, Zhengxu and Zheng, Tianyue and Chen, Wei and Lu, Jessica and Yu, Luping},
abstractNote = {The ortho-position functionalized perylene diimide derivatives (αPPID, αPBDT) were synthesized and used as the electron acceptors in nonfullerene organic photovoltaics. Due to the good planarity of ortho-position functionalized PDI, the αPPID and αPBDT show strong tendency to form aggregate because of their enhanced intermolecular pie-pie interaction. Moreover, they maintain the pure domains and the same packing order as in the pure film if they are blended with PBT7-TH and the SCLC measurement also shows the high electron mobility. The inverted OPVs employing αPDI-based compounds as acceptor and PBT7-TH as the donor give the highest PCE of 4.92 % for αPBDT based device and 3.61 % for αPPID based device, which is 39 % and 4 % higher than that for their counterpart βPBDT and βPPID. The charge separation study shows the more efficient exciton dissociation at interfaces between PDI based compounds and PBT7-TH. In conclusion, the results suggest that compared to beta-substituted ones, alpha-substituted PDI derivatives are more promising electron acceptors for OPV.},
doi = {10.1021/acs.chemmater.5b04570},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 4,
volume = 28,
place = {United States},
year = {2016},
month = {2}
}

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