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 language | English |
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Article number | 1904768 |
Journal | Advanced Functional Materials |
Volume | 29 |
Issue number | 43 |
DOIs | |
State | Published - 1 Oct 2019 |
Keywords
- 2D perovskites
- dual emission
- Mn dopant
- water-stable perovskites