Issue 13, 2023

Various approaches to synthesize water-stable halide PeNCs

Abstract

The “halide perovskite fever” is ongoing in material-based research due to the extraordinary properties of halide perovskites like high absorption coefficient, tunable band gap (throughout the visible range), near-unity emission quantum yield, large carrier diffusion length (exceeding 1 μm), and a long recombination time (∼μs order). However, the water instability of halide perovskites is an Achilles' heel that must be overcome. Recently, some approaches have been adopted to improve the water stability of ABX3 perovskites, including the substitution of A cations, ligand exchange, encapsulation in porous frameworks, passivation with inorganic or organic layers, and encapsulation in hydrophobic polymers and glass matrices. This review briefly introduces the degradation mechanisms according to the RH and summarizes various approaches to stabilize halide perovskites. An outlook for research directions of halide perovskites is also suggested.

Graphical abstract: Various approaches to synthesize water-stable halide PeNCs

Article information

Article type
Review Article
Submitted
29 Nov 2022
Accepted
19 Feb 2023
First published
22 Feb 2023

J. Mater. Chem. A, 2023,11, 6796-6813

Various approaches to synthesize water-stable halide PeNCs

A. Das, A. Ghorai, K. Saha, A. Chatterjee and U. Jeong, J. Mater. Chem. A, 2023, 11, 6796 DOI: 10.1039/D2TA09286G

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