Abstract Cs2AgBiBr6 crystals with the maximum dimension of 10 mm and flat plane have been grown by the solution cooling method with additive toluene. The crystal structure and crystallinity were characterized by the X-ray diffraction of the powder and flat plane, respectively. The optical transmission and temperature dependent photo-emission spectra were measured, and the binding energy was estimated by fitting the Arrhenius equation. Comparative research on the trap densities, carrier mobilities and resistivities of our crystals between Ag or Au electrodes were undertaken using the space charge limited current method. The photodetection properties induced by UV light and X-ray were also investigated. Furthermore, the transient response of the X-ray detectors is very stable at room temperature under air condition with the on-off ratio of 165. This study shows that Cs2AgBiBr6 crystal grown by additive toluene exhibits good promising application for X-ray detection.

中文翻译：

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添加甲苯的溶液中生长的大 (111) 平面 Cs2AgBiBr6 晶体的生长和光电探测特性

摘要 采用甲苯溶液冷却法制备了最大尺寸为10 mm的平面Cs2AgBiBr6晶体。晶体结构和结晶度分别通过粉末和平面的 X 射线衍射表征。测量了光透射和温度相关的光发射光谱，并通过拟合阿伦尼乌斯方程来估计结合能。使用空间电荷限制电流方法对我们的晶体在 Ag 或 Au 电极之间的陷阱密度、载流子迁移率和电阻率进行了比较研究。还研究了由紫外光和 X 射线引起的光电探测特性。此外，X射线探测器的瞬态响应在室温和空气条件下非常稳定，开关比为165。