An Electron Acceptor with Broad Visible–NIR Absorption and Unique Solid State Packing for As-Cast High Performance Binary Organic Solar Cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

90 Scopus Citations
View graph of relations

Author(s)

  • Xueliang Shi
  • Xunfan Liao
  • Ke Gao
  • Lijian Zuo
  • Jingde Chen
  • Jingbo Zhao
  • Feng Liu
  • Yiwang Chen

Detail(s)

Original languageEnglish
Article number1802324
Journal / PublicationAdvanced Functional Materials
Volume28
Issue number33
Online published22 Jun 2018
Publication statusPublished - 15 Aug 2018

Abstract

A novel acceptor–donor–acceptor (A–D–A) type electron acceptor 6TIC-4F with terthieno[3,2-b]thiophene (6T) as the core unit is rationally designed and synthesized, which exhibits an extraordinarily narrow bandgap (≈1.24 eV) and strong absorption between 650 and 1000 nm. X-ray crystallographic analysis reveals that it has unique intermolecular π–π stacking. The solar cells based on the as-cast poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b′]dithiophene))-alt-(5,5-(1′,3′-di-2-thienyl-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′,5′-c′]dithiophene-4,8-dione))]) (PBDB-T):6TIC-4F binary blends exhibit an excellent power conversion efficiency (PCE) of 11.14% with a high JSC of 23.00 mA cm−2, and a high fill factor of 0.67, which represents one of the best PCE values for low bandgap (Eg < 1.3 eV)–based organic solar cells.

Research Area(s)

  • near-infrared semiconductors, nonfullerene acceptors, organic solar cells, X-ray diffraction

Citation Format(s)

An Electron Acceptor with Broad Visible–NIR Absorption and Unique Solid State Packing for As-Cast High Performance Binary Organic Solar Cells. / Shi, Xueliang; Liao, Xunfan; Gao, Ke; Zuo, Lijian; Chen, Jingde; Zhao, Jingbo; Liu, Feng; Chen, Yiwang; Jen, Alex K.-Y.

In: Advanced Functional Materials, Vol. 28, No. 33, 1802324, 15.08.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review