Thermally stable high performance non-fullerene polymer solar cells with low energy loss by using ladder-type small molecule acceptors

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

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Author(s)

  • Qing-Ya Li
  • Jingyang Xiao
  • Lu-Ming Tang
  • Hua-Chun Wang
  • Ziming Chen
  • Zhiyong Yang
  • Yun-Xiang Xu

Detail(s)

Original languageEnglish
Pages (from-to)217-224
Journal / PublicationOrganic Electronics
Volume44
Publication statusPublished - 1 May 2017
Externally publishedYes

Abstract

Two ladder-type small molecule acceptors IDT-BT-R and IDT-BT-R-CN are utilized in non-fullerene polymer solar cells by pairing with PTB7-Th as donor polymer, in which PTB7-Th:IDT-BT-R solar cells achieve high performance up to 8.3% with high voltage of 1.02 V and low energy loss of 0.59 eV. Thermal annealing triggered local rearrangement of ladder-type molecules in n-type phases of bulk heterojunction films, increased their absorption abilities and electron transport properties, therefore resulting in improved short-circuit current densities (Jscs) and fill factors (FFs), in contrast to fullerene-based solar cells which suffered from extensive aggregation of fullerenes upon annealing. The outstanding thermal stability, high performance and low energy loss demonstrated here show great potential of non-fullerene polymer solar cells.

Research Area(s)

  • Ladder-type, Low energy loss, Non-fullerene, Polymer solar cells, Thermal stability

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Thermally stable high performance non-fullerene polymer solar cells with low energy loss by using ladder-type small molecule acceptors. / Li, Qing-Ya; Xiao, Jingyang; Tang, Lu-Ming; Wang, Hua-Chun; Chen, Ziming; Yang, Zhiyong; Yip, Hin-Lap; Xu, Yun-Xiang.

In: Organic Electronics, Vol. 44, 01.05.2017, p. 217-224.

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