Over the past few years, lead halide perovskites (LHPs) in the form of single crystals (SCs) have been intensively investigated for photodetection applications. Methylhydrazinium (MHy) is a new type of organic cation that can form either 2D or 3D halide perovskite structures. Here, we study single crystals MHy₂PbI₄ (2D), MHy₂PbBr₄ (2D), MHyPbBr₃ (3D), and mixed-cation MA_0.725MHy_0.275PbBr₃ to determine for the first time how dimensionality and composition affect the photodetection properties of photoconductor-type photodetectors fabricated using this class of solids. The results provide a reference for researchers working in the same domain by revealing the relationship between different types and structures of LHPs and their optoelectronic properties, which is crucial for the further advancement of LHP-based optoelectronic devices.

中文翻译：

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甲基肼卤化铅钙钛矿：成分和维度对其光电和光检测性能的影响


在过去的几年里，单晶 （SC） 形式的卤化铅钙钛矿 （LHP） 已被用于光检测应用。甲基肼 （MHy） 是一种新型有机阳离子，可以形成 2D 或 3D 卤化物钙钛矿结构。在这里，我们研究了单晶 MHy₂PbI₄ （2D）、MHy₂PbBr₄ （2D）、MHyPbBr₃ （3D） 和混合阳离子 MA_0.725MHy_0.275PbBr₃，首次确定了维度和成分如何影响使用此类固体制造的光电导体型光电探测器的光探测特性。研究结果通过揭示不同类型和结构的 LHP 与其光电特性之间的关系，为同一领域的研究人员提供了参考，这对于基于 LHP 的光电器件的进一步发展至关重要。