Polymerized small molecular acceptor based all-polymer solar cells with an efficiency of 16.16% via tuning polymer blend morphology by molecular design

Du, Jiaqi; Hu, Ke; Zhang, Jinyuan; Meng, Lei; Yue, Jiling; Angunawela, Indunil; Yan, Hongping; Qin, Shucheng; Kong, Xiaolei; Zhang, Zhanjun; Guan, Bo; Ade, Harald; Li, Yongfang

doi:10.1038/s41467-021-25638-9

Polymerized small molecular acceptor based all-polymer solar cells with an efficiency of 16.16% via tuning polymer blend morphology by molecular design

Journal Article · Mon Sep 06 00:00:00 EDT 2021 · Nature Communications

DOI:https://doi.org/10.1038/s41467-021-25638-9· OSTI ID:1903856

Du, Jiaqi ^[1]; Hu, Ke; Zhang, Jinyuan ^[2]; ^[3]; Yue, Jiling ^[4]; Angunawela, Indunil ^[5]; Yan, Hongping ^[6]; Qin, Shucheng ^[3]; Kong, Xiaolei ^[3]; Zhang, Zhanjun ^[4]; Guan, Bo ^[4]; ^[5]; ^[7]

Chinese Academy of Sciences (CAS), Beijing (China); University of Chinese Academy of Sciences, Beijing (China); OSTI
Chinese Academy of Sciences (CAS), Beijing (China)
Chinese Academy of Sciences (CAS), Beijing (China); University of Chinese Academy of Sciences, Beijing (China)
University of Chinese Academy of Sciences, Beijing (China)
North Carolina State University, Raleigh, NC (United States)
Stanford University, CA (United States)
Chinese Academy of Sciences (CAS), Beijing (China); University of Chinese Academy of Sciences, Beijing (China); Soochow University, Suzhou (China)

All-polymer solar cells (all-PSCs) based on polymerized small molecular acceptors (PSMAs) have made significant progress recently. Here, we synthesize two A-DA’D-A small molecule acceptor based PSMAs of PS-Se with benzo[c][1,2,5]thiadiazole A’-core and PN-Se with benzotriazole A’-core, for the studies of the effect of molecular structure on the photovoltaic performance of the PSMAs. The two PSMAs possess broad absorption with PN-Se showing more red-shifted absorption than PS-Se and suitable electronic energy levels for the application as polymer acceptors in the all-PSCs with PBDB-T as polymer donor. Cryogenic transmission electron microscopy visualizes the aggregation behavior of the PBDB-T donor and the PSMA in their solutions. In addition, a bicontinuous-interpenetrating network in the PBDB-T:PN-Se blend film with aggregation size of 10~20 nm is clearly observed by the photoinduced force microscopy. The desirable morphology of the PBDB-T:PN-Se active layer leads its all-PSC showing higher power conversion efficiency of 16.16%.

View Accepted Manuscript (DOE)

Research Organization:: North Carolina State University, Raleigh, NC (United States)

Sponsoring Organization:: Guangdong Major Project of Basic and Applied Basic Research; MOST; National Key Research and Development Program of China; Office of Naval Research (ONR); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1903856

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 12; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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