High-Performance Organic Solar Cells Based on a Non-Fullerene Acceptor with a Spiro Core

Hua Sun, Po Sun, Cong Zhang, Yingguo Yang, Xingyu Gao, Fei Chen, Zongxiang Xu, Zhi Kuan Chen, Wei Huang

Research output: Journal PublicationArticlepeer-review

31 Citations (Scopus)

Abstract

Derived from perylenediimide (PDI) building blocks, 3D PDI molecules are considered as a type of promising structure to overcome molecular aggregation, thus improving the performance of organic solar cells. Herein, we report a novel PDI-based derivative, SCPDT-PDI4, with four PDI units connected to a unique spiro core. Attributed to this novel molecular design, SCPDT-PDI4 exhibits a rigid 3D structure, in which the aggregation tendency of PDI chromophores could be effectively attenuated. Additionally, strong intramolecular charge transfer and high charge mobility are achieved due to the well-conjugated structure and electron-rich property of SCPDT. Therefore, fullerene-free organic solar cells based on SCPDT-PDI4 and PTB7-Th achieve a remarkable high efficiency of 7.11 %. Such an excellent result demonstrates the opportunity of SCPDT to be a promising building block for non-fullerene acceptors.

Original languageEnglish
Pages (from-to)721-725
Number of pages5
JournalChemistry - An Asian Journal
Volume12
Issue number7
DOIs
Publication statusPublished - 4 Apr 2017

Keywords

  • 3D structure
  • non-fullerene acceptors
  • organic solar cells
  • perylenediimide
  • power conversion efficiency

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry

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