Over 14% efficiency single-junction organic solar cells enabled by reasonable conformation modulating in naphtho[2,3-b:6,7-b′]difuran based polymer

Bing Zheng, Feng Qi, Yu Zhang, Ming Zhang, Panfeng Gao, Qing feng Liu, Tianchen Li, Donghui Wei, Meixiu Wan, Guangming Chen, Lijun Huo, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)

Abstract

As one kind of abundant product from renewable resources, furan and its fused-ring derivatives, have provoked great interest in the context of developing efficient photovoltaic materials. However, the power conversion efficiency (PCE) of furan-based photovoltaic materials has lagged behind its thiophene counterparts. In this work, in consideration of the ordered π–π stacking via extending conjugation to further improve the charge mobility, a novel furan fused-ring derivative of naphtho[2,3-b:6,7-b′]difuran (NDF) based copolymer of NDF-3T is designed and synthesized. Because of its favorable linear molecular conformation, the NDF-3T possesses a high crystallinity, as well as ordered and dense π–π stacking. Subsequently, the NDF-3T-based device exhibits an efficient PCE of 14.21%, which is higher than that of the analogue naphthodithiophene (NDT) counterpart (10.86%). To the best of the authors’ knowledge, the PCE is also the best record in furan-based photovoltaic materials. More importantly, the development of line NDF shows great potential in construing highly efficient photovoltaic materials and can be referenced to other furan fused-ring structures.

Original languageEnglish
Article number2003954
Number of pages10
JournalAdvanced Energy Materials
Volume11
Issue number13
DOIs
Publication statusPublished - 8 Apr 2021
Externally publishedYes

Keywords

  • crystallinity
  • molecular conformation
  • naphthodifuran
  • non-fullerene
  • polymer solar cell

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