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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

327 Scopus Citations
View graph of relations

Author(s)

  • Jun Yuan
  • Yunqiang Zhang
  • Liuyang Zhou
  • Chujun Zhang
  • Tsz-Ki Lau
  • Guichuan Zhang
  • Xinhui Lu
  • Shu Kong So
  • Serge Beaupré
  • Mathieu Mainville
  • Paul A. Johnson
  • Mario Leclerc
  • Honggang Chen
  • Hongjian Peng
  • Yongfang Li
  • Yingping Zou

Detail(s)

Original languageEnglish
Article number1807577
Journal / PublicationAdvanced Materials
Volume31
Issue number17
Publication statusPublished - 25 Apr 2019
Externally publishedYes

Abstract

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 × 10 5 cm −1 , and an electron mobility of 2.11 × 10 −4 cm 2 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.

Research Area(s)

  • electron-deficient core, fused benzothiadiazole, nonfullerene acceptors, organic photovoltaics, power conversion efficiency

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

Fused Benzothiadiazole: A Building Block for n-Type Organic Acceptor to Achieve High-Performance Organic Solar Cells. / Yuan, Jun; Zhang, Yunqiang; Zhou, Liuyang et al.
In: Advanced Materials, Vol. 31, No. 17, 1807577, 25.04.2019.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review