Abstract Significant physical and optical properties have been proved in MAPbX3 (X = Cl, Br, I) perovskite single crystals, especially for the mixing halide component. Herein, to investigate the fundamental effects on optical and electrical properties after the incorporation of Cl into MAPbBr3, we demonstrated a facile solution growth for preparing a series of high-quality MAPb(Br1−xClx)3 single crystals. A general principles regarding the modulation of precursor solution and the optimization of growth temperature were concluded. The resistive switching behavior and ohmic linear I-V characteristics were observed in different crystals. It was found that the mixed halide perovskites show significant improved bulk resistivity, carrier concentration and mobility, relative with the pure halide perovskites.

中文翻译：

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钙钛矿 MAPb(Br1-Cl )3 单晶：溶液生长和电学特性

摘要 MAPbX3 (X = Cl, Br, I) 钙钛矿单晶已被证明具有显着的物理和光学特性，特别是对于混合卤化物组分。在此，为了研究将 Cl 掺入 MAPbBr3 后对光学和电学性质的基本影响，我们展示了用于制备一系列高质量 MAPb(Br1−xClx)3 单晶的简便溶液生长。总结了关于前体溶液调制和生长温度优化的一般原则。在不同的晶体中观察到电阻开关行为和欧姆线性 IV 特性。结果表明，与纯卤化物钙钛矿相比，混合卤化物钙钛矿显示出显着改善的体电阻率、载流子浓度和迁移率。