DataVXACS Applied Materials & InterfacesPaper
journal article·2020-03-11

Trifluoromethyl Group-Modified Non-Fullerene Acceptor toward Improved Power Conversion Efficiency over 13% in Polymer Solar Cells

Chao Yao, Jiajun Zhao, Yanan Zhu, Bin Liu, Chaoyi Yan, Dmitrii F. Perepichka, Hong Meng

ACS Applied Materials & Interfaces· Volume 12· Issue 10
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Source abstract

Abstract

Herein, we report a new molecule structure modification strategy for non-fullerene small-molecule electron acceptors (NFAs) for solar cells through trifluoromethylation of end-capping groups. The synthesized trifluoromethylated acceptor ITCF3 exhibits narrower band gap, stronger light absorption, lower molecular energy levels, and better electron transport property compared to the reference NFA without the trifluoromethyl group (ITIC). Bulk heterojunction solar cells based on ITCF3 combined with the PM6 polymer donor exhibit a significantly improved power conversion efficiency of 13.3% compared with the ITIC-based device (8.4%). This work reveals great potential of trifluoromethylation in the design of efficient photovoltaic acceptor materials.
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Research context

PolymersElectronic materials

OpenAlex topics: Organic Electronics and Photovoltaics · Perovskite Materials and Applications · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, China

Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal H3A0B8, Quebec, Canada

Funding

China Scholarship Council · Natural Sciences and Engineering Research Council of Canada · National Natural Science Foundation of China · Shenzhen Science and Technology research grant · Shenzhen Engineering Laboratory, Shenzhen development and reform commission · Shenzhen Science and Technology Innovation Committee · Guangdong Key Research Project · China (Shenzhen)-Canada Technology Collaboration Project · China (Shenzhen)-United States Technology Collaboration Project

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