A High-Performance Nonfused Wide-Bandgap Acceptor for Versatile Photovoltaic Applications

A High-Performance Nonfused Wide-Bandgap Acceptor for Versatile Photovoltaic Applications

© 2021 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 5 vom: 01. Feb., Seite e2108090
1. Verfasser: Bi, Pengqing (VerfasserIn)
Weitere Verfasser: Zhang, Shaoqing, Ren, Junzhen, Chen, Zhihao, Zheng, Zhong, Cui, Yong, Wang, Jianqiu, Wang, Shijie, Zhang, Tao, Li, Jiayao, Xu, Ye, Qin, Jinzhao, An, Cunbin, Ma, Wei, Hao, Xiaotao, Hou, Jianhui
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article indoor photovoltaics nonfused acceptors organic photovoltaic cells tandem cells wide bandgap
Beschreibung
Zusammenfassung:© 2021 Wiley-VCH GmbH.
Wide-bandgap (WBG) nonfullerene acceptors (NFAs) with nonfused conjugated structures play a critical role in organic photovoltaic (OPV) cells. Here, NFAs named GS-OEH, GS-OC6, and GS-ISO, with optical bandgaps larger than 1.70 eV, are synthesized without using the fused ring structures. Compared with GS-OEH and GS-OC6, GS-ISO exhibits much stronger crystallinity, leading to a smaller energetic disorder and a larger exciton diffusion coefficient. GS-ISO also possesses a higher electroluminescence external quantum efficiency of 1.0 × 10-2 . The OPV cell based on PBDB-TF:GS-ISO demonstrates a power conversion efficiency (PCE) of 11.62% under the standard one sun illumination. Besides, the PBDB-TF:GS-ISO-based cell with effective area of 1.0 cm2  exhibits a PCE of 28.37% under 2700 K illumination of 500 lux. A tandem OPV cell using PBDB-TF:GS-ISO as the front subcell shows an outstanding efficiency of 19.10%. Importantly, the GS-ISO-based OPV cell exhibits promising stability under the continuous illumination of simulated sunlight. This study indicates that the molecular design strategy demonstrated in this work has great superiority in developing nonfused NFAs and also that GS-ISO is a promising WBG acceptor for versatile photovoltaic applications
Beschreibung:Date Revised 03.02.2022
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202108090