Fluorinated triphenylamine-based dopant-free hole-transporting material for high-performance inverted perovskite solar cells

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

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Author(s)

  • Zhanfeng Li
  • Yahui Tong
  • Jingkun Ren
  • Qinjun Sun
  • Yue Tian
  • Yanxia Cui
  • Hua Wang
  • Yuying Hao

Detail(s)

Original languageEnglish
Article number125923
Journal / PublicationChemical Engineering Journal
Volume402
Online published18 Jun 2020
Publication statusPublished - 15 Dec 2020

Abstract

A fluorinated methoxytriphenylamine-based small molecule H2 is demonstrated as an effective hole-transporting material (HTM) to simultaneously enhance the efficiency and stability of the dopant-free inverted perovskite solar cells (PSCs). The fluorine-methoxytriphenylamine hybrid strategy in H2 is found to improve energy level alignment, hole extraction, and most importantly, the film morphology, which enables the growth of high quality perovskite active layer and superior interfacial contact. Consequently, the dopant-free H2-based inverted PSCs achieve an excellent efficiency of 18.69% with negligible hysteresis and good ambient stability, representing one of the best dopant-free organic-small-molecule HTMs for conventional perovskite MAPbI3 PSCs reported thus far. These results demonstrate the promising applications of fluorine-methoxytriphenylamine hybrid strategy in designing efficient and stable HTMs for dopant-free PSCs.

Research Area(s)

  • Dopant-free, Fluorinated, Hole-transporting materials, Inverted perovskite solar cells

Citation Format(s)

Fluorinated triphenylamine-based dopant-free hole-transporting material for high-performance inverted perovskite solar cells. / Li, Zhanfeng; Tong, Yahui; Ren, Jingkun; Sun, Qinjun; Tian, Yue; Cui, Yanxia; Wang, Hua; Hao, Yuying; Lee, Chun-Sing.

In: Chemical Engineering Journal, Vol. 402, 125923, 15.12.2020.

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