Dual Emission of Water-Stable 2D Organic–Inorganic Halide Perovskites with Mn(II) Dopant

Qiankai Ba, Atanu Jana, Lihua Wang, Kwang S. Kim

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Moisture-delicate and water-unstable organic–inorganic halide perovskites (OI-HPs) create huge challenges for the synthesis of highly efficient water-stable light-emitting materials for optoelectronic devices. Herein, a simple acid solution–assisted method to synthesize quantum confined 2D lead perovskites through Mn doping is reported. The efficient energy transfer between host and dopant ions in orange light-emitting Mn2+-doped OI-HPs leads to the most efficient integrated luminescence with a photoluminescence quantum yield over 45%. The Mn2+ substitution of Pb2+ and passivation with low dielectric constant molecules such as phenethylamine, benzylamine, and butylamine enhance water resistivity, leading to water stability. The dual emission process of this water-stable 2D Mn-doped perovskite will help in developing highly efficient 2D water-stable perovskites for practical applications.

Original languageEnglish
Article number1904768
JournalAdvanced Functional Materials
Volume29
Issue number43
DOIs
StatePublished - 1 Oct 2019

Keywords

  • 2D perovskites
  • dual emission
  • Mn dopant
  • water-stable perovskites

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