Issue 14, 2024

Study on growth technology and optical properties of large size and high quality methylamine lead bromide single crystals

Abstract

As a new generation of photoelectric materials, organic–inorganic halide perovskites have been widely used in photodetectors, solar cells and other fields, but most of the current mainstream applications are thin film materials. Compared with polycrystalline thin films, perovskite single crystals have fewer grain boundaries and relatively stable electron and hole transport, and are ideal materials for optoelectronic devices. To realize the controllable growth of CH3NH3PbBr3 (MAPbBr3) crystals, understand their growth mechanism, and reflect the inherent physical and chemical properties of the material, a new type of internal growth temperature control and external circulation cooling growth system was developed in this paper, which can accurately control the temperature change during crystal growth. The size of the grown MAPbBr3 single crystal reaches 62 × 58 × 23 mm3, which is the largest single crystal reported to date. The measured single crystal absorption cut-off edge, optical band gap, and carrier lifetime are superior to the traditional simple inverse temperature crystallization (ITC) method, which will help its deep applications in photovoltaics, optoelectronics, and X-ray imaging.

Graphical abstract: Study on growth technology and optical properties of large size and high quality methylamine lead bromide single crystals

Article information

Article type
Paper
Submitted
12 Jan 2024
Accepted
27 Feb 2024
First published
28 Feb 2024

CrystEngComm, 2024,26, 2003-2008

Study on growth technology and optical properties of large size and high quality methylamine lead bromide single crystals

Y. Sun, Y. Ma, X. Li, Z. Hu and G. Zheng, CrystEngComm, 2024, 26, 2003 DOI: 10.1039/D4CE00028E

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