Metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells

  • Fei Zhang
  • , So Yeon Park
  • , Canglang Yao
  • , Haipeng Lu
  • , Sean P. Dunfield
  • , Chuanxiao Xiao
  • , Soňa Uličná
  • , Xiaoming Zhao
  • , Linze Du Hill
  • , Xihan Chen
  • , Xiaoming Wang
  • , Laura E. Mundt
  • , Kevin H. Stone
  • , Laura T. Schelhas
  • , Glenn Teeter
  • , Sean Parkin
  • , Erin L. Ratcliff
  • , Yueh Lin Loo
  • , Joseph J. Berry
  • , Matthew C. Beard
  • Yanfa Yan, Bryon W. Larson, Kai Zhu

Research output: Contribution to journalArticlepeer-review

Abstract

The performance of three-dimensional (3D) organic-inorganic halide perovskite solar cells (PSCs) can be enhanced through surface treatment with 2D layered perovskites that have efficient charge transport. We maximized hole transport across the layers of a metastable Dion-Jacobson (DJ) 2D perovskite that tuned the orientational arrangements of asymmetric bulky organic molecules. The reduced energy barrier for hole transport increased out-of-plane transport rates by a factor of 4 to 5, and the power conversion efficiency (PCE) for the 2D PSC was 4.9%. With the metastable DJ 2D surface layer, the PCE of three common 3D PSCs was enhanced by approximately 12 to 16% and could reach approximately 24.7%. For a triple-cation–mixed-halide PSC, 90% of the initial PCE was retained after 1000 hours of 1-sun operation at ~40°C in nitrogen.

Original languageEnglish (US)
Pages (from-to)71-76
Number of pages6
JournalScience
Volume375
Issue number6576
DOIs
StatePublished - Jan 7 2022

ASJC Scopus subject areas

  • General

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