2D materials for conducting holes from grain boundaries in perovskite solar cells

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

11 Scopus Citations
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Author(s)

  • Peng You
  • Guanqi Tang
  • Jiupeng Cao
  • Tsz-Wai Ng
  • Zafer Hawash
  • Naixiang Wang
  • Chun-Ki Liu
  • Wei Lu
  • Qidong Tai
  • Yabing Qi
  • Feng Yan

Detail(s)

Original languageEnglish
Article number68
Journal / PublicationLight: Science & Applications
Volume10
Online published31 Mar 2021
Publication statusPublished - 2021

Link(s)

Abstract

Grain boundaries in organic-inorganic halide perovskite solar cells (PSCs) have been found to be detrimental to the photovoltaic performance of devices. Here, we develop a unique approach to overcome this problem by modifying the edges of perovskite grain boundaries with flakes of high-mobility two-dimensional (2D) materials via a convenient solution process. A synergistic effect between the 2D flakes and perovskite grain boundaries is observed for the first time, which can significantly enhance the performance of PSCs. We find that the 2D flakes can conduct holes from the grain boundaries to the hole transport layers in PSCs, thereby making hole channels in the grain boundaries of the devices. Hence, 2D flakes with high carrier mobilities and short distances to grain boundaries can induce a more pronounced performance enhancement of the devices. This work presents a cost-effective strategy for improving the performance of PSCs by using high-mobility 2D materials.

Research Area(s)

Citation Format(s)

2D materials for conducting holes from grain boundaries in perovskite solar cells. / You, Peng; Tang, Guanqi; Cao, Jiupeng; Shen, Dong; Ng, Tsz-Wai; Hawash, Zafer; Wang, Naixiang; Liu, Chun-Ki; Lu, Wei; Tai, Qidong; Qi, Yabing; Lee, Chun-Sing; Yan, Feng.

In: Light: Science & Applications, Vol. 10, 68, 2021.

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

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