Improved photovoltaic performance and robustness of all-polymer solar cells enabled by a polyfullerene guest acceptor

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

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Author(s)

  • Han Yu
  • Xinhui Zou
  • Junli Yin
  • Xiaoyu Shi
  • Yuhao Li
  • Heng Zhao
  • Lingyuan Wang
  • Ho Ming Ng
  • Bosen Zou
  • Xinhui Lu
  • Kam Sing Wong
  • Wei Ma
  • He Yan
  • Shangshang Chen

Detail(s)

Original languageEnglish
Article number2323
Journal / PublicationNature Communications
Volume14
Online published22 Apr 2023
Publication statusPublished - 2023

Link(s)

Abstract

Fullerene acceptors typically possess excellent electron-transporting properties and can work as guest components in ternary organic solar cells to enhance the charge extraction and efficiencies. However, conventional fullerene small molecules typically suffer from undesirable segregation and dimerization, thus limiting their applications in organic solar cells. Herein we report the use of a poly(fullerene-alt-xylene) acceptor (PFBO-C12) as guest component enables a significant efficiency increase from 16.9% for binary cells to 18.0% for ternary all-polymer solar cells. Ultrafast optic and optoelectronic studies unveil that PFBO-C12 can facilitate hole transfer and suppress charge recombination. Morphological investigations show that the ternary blends maintain a favorable morphology with high crystallinity and smaller domain size. Meanwhile, the introduction of PFBO-C12 reduces voltage loss and enables all-polymer solar cells with excellent light stability and mechanical durability in flexible devices. This work demonstrates that introducing polyfullerenes as guest components is an effective approach to achieving highly efficient ternary all-polymer solar cells with good stability and mechanical robustness. © The Author(s) 2023.

Research Area(s)

Citation Format(s)

Improved photovoltaic performance and robustness of all-polymer solar cells enabled by a polyfullerene guest acceptor. / Yu, Han; Wang, Yan; Zou, Xinhui et al.
In: Nature Communications, Vol. 14, 2323, 2023.

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

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