Issue 4, 2024

Crystallization dynamics and stabilization of FAPbI3 single-phase perovskite

Abstract

The fundamental ABX3 structure of metal-halide perovskites is crucial for maintaining the crystal lattice stability and also enables exceptional optoelectronic properties. One main goal of the research community is to produce phase-stable (“black phase”) FAPbI3. Here, we used the LaMer model and an in situ optical microscope to investigate the perovskite crystallization process. We aim to develop a stable (black) single-phase FAPbI3 perovskite by investigating the [PbX6]4− template and associated A-cations. Specifically, the addition of MACl is shown to facilitate the crystallization of FAPbI3 without changing the [PbI6]4− skeleton. On the other hand, MABr acts as a passivation agent for the film, resulting in stable FAPbI3 films with a pure black phase when exposed to air with a humidity of 45%.

Graphical abstract: Crystallization dynamics and stabilization of FAPbI3 single-phase perovskite

Supplementary files

Article information

Article type
Paper
Submitted
23 jul. 2023
Accepted
27 nov. 2023
First published
09 dic. 2023

Energy Environ. Sci., 2024,17, 1407-1415

Crystallization dynamics and stabilization of FAPbI3 single-phase perovskite

W. Zuo, W. Fu, K. Wang, C. Das, M. M. Byranvand, K. Wang, A. Chaudhary, J. Lim, M. Li and M. Saliba, Energy Environ. Sci., 2024, 17, 1407 DOI: 10.1039/D3EE02404K

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