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CC BY-NC-ND 4.0 · Organic Materials 2019; 01(01): 030-037
DOI: 10.1055/s-0039-1700848
Original Article
The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/). (2019) The Author(s).

High-Performance Ternary Organic Solar Cells Enabled by Combining Fullerene and Nonfullerene Electron Acceptors

Jianyun Zhang‡   ⋄
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
b   School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
,
Wenrui Liu‡   ⋄
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
b   School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
,
Shengjie Xu
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
,
Xiaozhang Zhu
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
b   School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
› Author Affiliations Funding Information: The authors would like to thank the National Basic Research Program of China (973 Program; No. 2014CB643502), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB12010200), and the National Natural Science Foundation of China (91333113, 21572234, 91833304, and 21805289) for the financial support.
Further Information

Publication History

Received: 05 July 2019

Accepted after revision: 15 August 2019

Publication Date:
28 November 2019 (online)

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Abstract

Recently, by elaborately designing nonfullerene acceptors and selecting suitable polymer donors great progresses have been made towards binary organic solar cells (OSCs) with power conversion efficiencies (PCEs) over 15%. Ternary organic photovoltaics by introducing a third component into the host binary system is recognized to be highly effective to elevate the performance through extending the light absorption, manipulating the recombination behavior of the carriers, and improving the morphology of the active layer. In this work, we synthesized a new electron-acceptor ZITI-4F matching it with the wide-bandgap polymer donor PBDB-T The PBDB-T:ZITI-4F-based OSC showed a high PCE of 12.33%. After introducing 40% of PC71BM as the third component, the ternary device achieved an improved PCE of 13.40% with simultaneously improved photovoltaic parameters. The higher performance of the ternary device can be attributed to the improved and more balanced charge mobility, reduced bimolecular recombination, and more favorable morphology. These results indicate that the cooperation of a fullerene-based acceptor and a nonfullerene acceptor to fabricate ternary OSCs is an effective approach to optimizing morphology and therefore to increase the performance of OSCs.

Key words

ternary organic solar cells - electron acceptors - indenoindene - power conversion efficiencies

Supporting Information

Supporting information for this article is available online at https://doi.org/10.1055/s-0039-1700848.


⋄ Jianyun Zhang and Wenrui Liu contributed equally to this work.


Supporting Information

 

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