Issue 14, 2023

Solvent engineering of MAPbI3 perovskite thick film for a direct X-ray detector

Abstract

The emergence of organic–inorganic hybrid perovskites with a high μτ product and a high absorption coefficient has made it possible to adopt an aerosol–liquid–solid technology for direct X-ray detectors. The film quality from the ALS process is often compromised, especially on the film surface, when deposited in ambient conditions with uncontrolled humidity. Herein we develop a solvent engineering strategy in the ALS process to obtain high-quality MAPbI3 thick films. The key is the introduction of a molecular additive to intervene and regulate the perovskite crystallization process so that the negative effect of the ALS ambience is minimized. This strategy allows us to prepare direct X-ray detectors with much reduced dark current, enhanced response speed and improved overall performance.

Graphical abstract: Solvent engineering of MAPbI3 perovskite thick film for a direct X-ray detector

Supplementary files

Article information

Article type
Paper
Submitted
15 dec 2022
Accepted
02 mar 2023
First published
14 mar 2023

Nanoscale, 2023,15, 6664-6672

Solvent engineering of MAPbI3 perovskite thick film for a direct X-ray detector

W. Qian, W. Qiu, S. Yu, D. Huang, R. Lei, X. Huang, S. Xiao, X. Wang and S. Yang, Nanoscale, 2023, 15, 6664 DOI: 10.1039/D2NR07016B

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