压力增强的溶剂工程MAPbBr$_3$薄膜放大自发发射
Pressure-Enhanced Amplified Spontaneous Emission in Solvent-Engineered MAPbBr$_3$ Films
AI总结：
本文通过溶剂工程制备MAPbBr$_3$薄膜，研究其在高压下的放大自发发射特性，发现MAAc溶剂薄膜在高压下表现出更优异的光学性能和结构稳定性。
摘要：
三维金属卤化物硫化物（MHPs）的高压行为已被广泛研究。在高压技术领域，关于三维MHPs的研究主要集中在结构和光学性质上，其中光学性质主要通过光致发光行为进行研究，而材料的激光性质尚未被研究。本文采用溶剂工程方法制备了以离子液体甲基铵乙酸盐（MAAc）为溶剂的MAPbBr$_3$-MAAc薄膜以及以N,N-二甲基甲酰胺（DMF）和二甲基亚砜（DMSO）为溶剂的常规MAPbBr$_3$-DMF:DMSO薄膜。使用小型腔体静水高压装置（DAC）对两种材料进行原位加压测试，以研究MAPbBr$_3$薄膜的高压光学行为，特别是放大自发发射（ASE）性质。结合高压原位拉曼光谱，发现薄膜在压力下的光学性质变化是由于材料晶体结构的变化所致。本文还强调，在高压下，MAPbBr$_3$-MAAc薄膜的光学性质和相结构稳定性优于MAPbBr$_3$-DMF:DMSO薄膜。
英文摘要：
The high-pressure behavior of 3D metal halide chalcogenides (MHPs) has been widely studied. In the field of high-pressure technology, the studies on 3D MHPs have focused on the structural and optical properties, where the optical properties are mainly investigated on the photoluminescence behavior, while the laser properties of the materials have not been studied yet. In this paper, MAPbBr$_3$-MAAc films with ionic liquid methylammonium acetate (MAAc) as solvent and conventional MAPbBr$_3$-DMF:DMSO films with N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) as solvents were prepared using solvent engineering method. In-situ pressurization testing of both materials using a small-cavity hydrostatic high-pressure device (DAC) was used to investigate the high-pressure optical behavior of the MAPbBr$_3$ films, especially the amplified spontaneous emission (ASE) properties, which, combined with high-pressure in-situ Raman, revealed that the changes in the optical properties of the films under pressure are due to the changes in the crystal structure of the materials. This paper also emphasizes that the optical properties and phase structure stability of MAPbBr$_3$-MAAc films are superior to those of MAPbBr$_3$-DMF:DMSO films under high pressure.
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