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

Jingyi Zhu; Qishi Liu; Dan Li; Zuo Xiao; Yu Chen; Yong Hua; Shangfeng Yang; Liming Ding

doi:10.1021/acsomega.9b01363

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

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

Authors

Jingyi Zhu^{1

2}, Qishi Liu², Dan Li², Zuo Xiao², Yu Chen¹, Yong Hua³, Shangfeng Yang⁴, Liming Ding²

Affiliations

¹ Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China.
² Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China.
³ School of Materials Science and Engineering, Yunnan University, Kunming 650091, China.
⁴ Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.

Abstract

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.