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ACS Omega. 2019 Aug 30;4(12):14800-14804. doi: 10.1021/acsomega.9b01363. eCollection 2019 Sep 17.

A Wide-Band Gap Copolymer Donor for Efficient Fullerene-Free Solar Cells.

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Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China.
Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China.
School of Materials Science and Engineering, Yunnan University, Kunming 650091, China.
Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.


The performance of a wide-band gap copolymer donor PDTPO-BDTT in nonfullerene solar cells was investigated. These solar cells presented broad photoresponse and high short-circuit current density. PDTPO-BDTT:IT-4F and PDTPO-BDTT:NNFA-4F solar cells with more efficient photoluminescence quenching and better film morphology gave decent power conversion efficiencies of 10.96 and 10.04%, respectively, which are much higher than those of the previously reported PDTPO-BDTT:fullerene solar cells.

Conflict of interest statement

The authors declare no competing financial interest.

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