Fused Benzothiadiazole A Building Block for n-Type Organic Acceptor to Achieve High-Performance Organic Solar Cells

Fused Benzothiadiazole : A Building Block for n-Type Organic Acceptor to Achieve High-Performance Organic Solar Cells

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 17 vom: 07. Apr., Seite e1807577
1. Verfasser: Yuan, Jun (VerfasserIn)
Weitere Verfasser: Zhang, Yunqiang, Zhou, Liuyang, Zhang, Chujun, Lau, Tsz-Ki, Zhang, Guichuan, Lu, Xinhui, Yip, Hin-Lap, So, Shu Kong, Beaupré, Serge, Mainville, Mathieu, Johnson, Paul A, Leclerc, Mario, Chen, Honggang, Peng, Hongjian, Li, Yongfang, Zou, Yingping
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article electron-deficient core fused benzothiadiazole nonfullerene acceptors organic photovoltaics power conversion efficiency
Beschreibung
Zusammenfassung:© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Narrow bandgap n-type organic semiconductors (n-OS) have attracted great attention in recent years as acceptors in organic solar cells (OSCs), due to their easily tuned absorption and electronic energy levels in comparison with fullerene acceptors. Herein, a new n-OS acceptor, Y5, with an electron-deficient-core-based fused structure is designed and synthesized, which exhibits a strong absorption in the 600-900 nm region with an extinction coefficient of 1.24 × 105 cm-1 , and an electron mobility of 2.11 × 10-4 cm2 V-1 s-1 . By blending Y5 with three types of common medium-bandgap polymers (J61, PBDB-T, and TTFQx-T1) as donors, all devices exhibit high short-circuit current densities over 20 mA cm-2 . As a result, the power conversion efficiency of the Y5-based OSCs with J61, TTFQx-T1, and PBDB-T reaches 11.0%, 13.1%, and 14.1%, respectively. This indicates that Y5 is a universal and highly efficient n-OS acceptor for applications in organic solar cells
Beschreibung:Date Revised 01.10.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201807577