Issue 8, 2024

Ionic liquid-assisted growth of high-quality methylammonium lead bromide single crystals for photodetection applications

Abstract

The control of nucleation temperature and growth kinetics during inverse temperature crystallization (ITC) is critical for achieving high-quality perovskite single crystals (SCs) for various optoelectronic applications. Here, we show that the addition of a 1-butyl-3-methylimidazolium bromide (BMIB) ionic liquid to the methylammonium lead bromide (MAPbBr3) precursor solution not only reduces the nucleation temperature from 80 °C to 60 °C but also substantially improves the crystal quality and optoelectronic properties. Specifically, MAPbBr3 SCs grown in the presence of BMIB exhibit better crystallinity with reduced lattice strain, nonradiative recombination and trap density compared to the MAPbBr3 SCs grown by the conventional ITC method at 80 °C. The high quality of the BMIB-based MAPbBr3 SCs enabled us to build an efficient planar-structured photodetector with high responsivity to green light (530 nm). This study shows that the ionic liquid-assisted growth of perovskite SCs has a significant influence on the crystal properties, which is beneficial for optoelectronic SC-based devices.

Graphical abstract: Ionic liquid-assisted growth of high-quality methylammonium lead bromide single crystals for photodetection applications

Supplementary files

Article information

Article type
Paper
Submitted
08 Dec. 2023
Accepted
18 Janv. 2024
First published
20 Janv. 2024
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2024,12, 2953-2960

Ionic liquid-assisted growth of high-quality methylammonium lead bromide single crystals for photodetection applications

A. Mahapatra, V. Anilkumar, J. Kruszyńska, N. Mrkyvkova, P. Siffalovic, P. Yadav and D. Prochowicz, J. Mater. Chem. C, 2024, 12, 2953 DOI: 10.1039/D3TC04511K

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