Method for growing copper-based lead-free perovskite single crystal by low-temperature solvent method

Abstract

According to the method for growing the copper-based lead-free perovskite single crystal through the low-temperature solvent method, an organic mixed solution is used as a crystal growth solvent, and the high-quality and large-size Cs3Cu2X5 single crystal can be rapidly grown through the reaction of CsX and CuX under the condition that the temperature is lower than 100 DEG C. The method disclosed by the invention has the characteristics of short manufacturing period, low cost, easiness in operation, environmental friendliness and the like, the size of the synthesized crystal can reach a super-centimeter magnitude, and the diffraction angle of the grown single crystal is less than 0.03 degree.

Description

technical field

[0001] The invention belongs to the field of new material preparation, in particular to a low-temperature solvent growth method of copper-based lead-free perovskite single crystal. Background technique

[0002] Lead-based perovskite is a cost-effective optoelectronic semiconductor material. Lead-based perovskites have high light absorption efficiency, long carrier lifetime and diffusion length, and low defect density. As a new generation of solar energy conversion materials, they can not only match the photoelectric conversion efficiency of traditional silicon-based solar cells, but also have more Low manufacturing cost, simpler production process and other advantages. However, the inherent instability and toxicity of lead-based perovskites have raised serious concerns about the viability of lead-based perovskites, hindering the large-scale commercial use of solar cells and similar devices based on these materials.

[0003] Therefore, the development of hig...

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