Efficient device engineering for inverted non-fullerene organic solar cells with low energy loss

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

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Author(s)

  • Jingyang Xiao
  • Ziming Chen
  • Guichuan Zhang
  • Qing-Ya Li
  • Qingwu Yin
  • Xiao-Fang Jiang
  • Fei Huang
  • Yun-Xiang Xu
  • Yong Cao

Detail(s)

Original languageEnglish
Pages (from-to)4457-4463
Journal / PublicationJournal of Materials Chemistry C
Volume6
Issue number16
Publication statusPublished - 2018
Externally publishedYes

Abstract

In recent years, the use of non-fullerene acceptors in organic solar cells has rapidly advanced with new acceptor materials, which have enabled devices to achieve a power conversion efficiency greater than 13%. In addition to new acceptor materials' design, device engineering plays an important role in improving the device performance. In this study, we develop effective device engineering strategies, including thermal annealing and interlayer modification, to improve the device performance from 7.39% to 9.39%. With the use of PTB7-Th as the donor and IDT-BT-R as the non-fullerene acceptor, we achieved an efficient non-fullerene organic solar cell based on an inverted device architecture with a power conversion efficiency as high as 9.39%. It is worthy of note that the energy loss of the optimized device is only around 0.5 eV, which can be attributed to weak recombination and the appropriate high energy level of the charge transfer states within the optimized device.

Bibliographic Note

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Citation Format(s)

Efficient device engineering for inverted non-fullerene organic solar cells with low energy loss. / Xiao, Jingyang; Chen, Ziming; Zhang, Guichuan; Li, Qing-Ya; Yin, Qingwu; Jiang, Xiao-Fang; Huang, Fei; Xu, Yun-Xiang; Yip, Hin-Lap; Cao, Yong.

In: Journal of Materials Chemistry C, Vol. 6, No. 16, 2018, p. 4457-4463.

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