Lead-free low-dimensional tin halide perovskites with functional organic spacers: Breaking the charge-transport bottleneck

Ming Gang Ju, Jun Dai, Liang Ma, Yuanyuan Zhou, Wanzhen Liang, Xiao Cheng Zeng

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Low-dimensional organic-inorganic halide perovskites (OIHPs) have received intense interest largely due to their remarkable stability compared to their 3D counterparts for potential optoelectronic and photovoltaic (PV) applications. However, 2D OIHPs encounter a 'bottleneck' of ultra-low conductivity between the inorganic sheets, owing to the intrinsic quantum and dielectric confinements, which usually results in unsatisfactory device performance. Herein, we predict and design a new family of 2D OIHPs to break the charge-transport 'bottleneck'. The newly designed 2D OIHPs consist of π-conjugated organic species as the spacers. As such, we find that the electronic structures exhibit type-II band alignment (staggered bandgap). Such a band-structure feature by design, if confirmed in the laboratory, re-enforces a materials design strategy for enhancing optoelectronic or PV device performance with 2D OIHPs.

Original languageEnglish (US)
Pages (from-to)16742-16747
Number of pages6
JournalJournal of Materials Chemistry A
Volume7
Issue number28
DOIs
StatePublished - 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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