Highly efficient and stable perovskite solar cells enabled by low-dimensional perovskitoids

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

14 Scopus Citations
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Author(s)

  • Jinbo Chen
  • Yingguo Yang
  • Hua Dong
  • Jingrui Li
  • Xinyi Zhu
  • Jie Xu
  • Fang Pan
  • Fang Yuan
  • Jinfei Dai
  • Bo Jiao
  • Xun Hou
  • Zhaoxin Wu

Detail(s)

Original languageEnglish
Article numbereabk2722
Journal / PublicationScience Advances
Volume8
Issue number4
Online published26 Jan 2022
Publication statusPublished - 28 Jan 2022

Abstract

Deep traps originated from the defects formed at the surfaces and grain boundaries of the perovskite absorbers during their lattice assembly are the main reasons that cause nonradiative recombination and material degradation, which notably affect efficiency and stability of perovskite solar cells (PSCs). Here, we demonstrate the substantially improved PSC performance by capping the photoactive layer with low-dimensional (LD) perovskitoids. The undercoordinated Pb ions and metallic Pb at the surfaces of the three-dimensional (3D) perovskite are effectively passivated via the Pb-I bonding from the favorably lattice-matched 3D/LD interface. The good stability and hydrophobicity of the LD (0D and 1D) perovskitoids allow excellent protection of the 3D active layer under severe environmental conditions. The PSC exhibits a power conversion efficiency of 24.18%, reproduced in an accredited independent photovoltaic testing laboratory. The unencapsulated device maintains 90% of its initial efficiency after 800 hours of continuous illumination under maximum power point operating conditions.

Citation Format(s)

Highly efficient and stable perovskite solar cells enabled by low-dimensional perovskitoids. / Chen, Jinbo; Yang, Yingguo; Dong, Hua; Li, Jingrui; Zhu, Xinyi; Xu, Jie; Pan, Fang; Yuan, Fang; Dai, Jinfei; Jiao, Bo; Hou, Xun; Jen, Alex K.-Y.; Wu, Zhaoxin.

In: Science Advances, Vol. 8, No. 4, eabk2722, 28.01.2022.

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