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Improving Performance of Nonfullerene Organic Solar Cells over 13% by Employing Silver Nanowires-Doped PEDOT:PSS Composite Interface.

Authors
  • Peng, Ruixiang1, 2, 3
  • Wan, Zhiyang1, 2
  • Song, Wei3
  • Yan, Tingting3
  • Qiao, Qiquan4
  • Yang, Shangfeng2
  • Ge, Ziyi3
  • Wang, Mingtai1
  • 1 Institute of Applied Technology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei 230031 , P. R. China. , (China)
  • 2 University of Science and Technology of China , Hefei 230026 , P. R. China. , (China)
  • 3 Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , P. R. China. , (China)
  • 4 Center for Advanced Photovoltaics and Sustainable Energy, Department of Electrical Engineering and Computer Sciences , South Dakota State University , Brookings , South Dakota 57007 , United States. , (United States)
Type
Published Article
Journal
ACS Applied Materials & Interfaces
Publisher
American Chemical Society
Publication Date
Oct 31, 2019
Identifiers
DOI: 10.1021/acsami.9b16404
PMID: 31625386
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Ag nanowires (NWs)/PEDOT:PSS composite was prepared by a facile solution-processing method and employed as anode interface in nonfullerene organic solar cells (OSCs). In the presence of a Ag NWs (5%, v/v%)/PEDOT:PSS interfacial layer, a high-power conversion efficiency up to 13.53% was achieved based on a PBDB-T-2Cl:IT-4F photoactive layer system, much higher than the efficiency of the controlled counterpart device with pristine PEDOT:PSS as anode modifier. Simultaneous enhancements in short-circuit current and fill factor were observed, in comparison to the case of the pristine PEDOT:PSS interface, due to the improved electrical conductivity of Ag NWs/PEDOT:PSS composites accompanied by the increased work function for a better matching with the indium tin oxide counter electrode, which facilitated increased charge transfer and reduced charge recombination at the anode/photoactive interface for improved device performance. The results clearly revealed that the Ag NWs/PEDOT:PSS composite interface is beneficial to improve the charge extraction and favor the realization of highly efficient nonfullerene OSCs.

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