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低离子迁移和高性能FAPbBr单晶X射线探测器的PEAI表面处理

Wei Jiang¹, Haibin Li¹, Zhenning Xing¹

¹Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.

ACS applied materials & interfaces

|September 13, 2024

概括

用乙 (PEAI) 进行表面处理,有效地使有机金属化物矿单晶 (SC) 的缺陷无效. 这大大提高了它们的X射线检测性能和为下一代辐射探测器的载体特性.

科学领域:

材料科学材料科学材料科学
晶体学晶体学是指结晶学.
辐射检测检测器可以检测到辐射.

背景情况:

有机金属化物矿单晶 (SCs) 在辐射检测方面表现有前途.
FAPbBr3 SC的表面缺陷阻碍了它们的性能,并限制了应用.

研究的目的:

在FAPbBr3 SCs中识别表面缺陷.
研究乙 (PEAI) 表面处理对离子迁移,光电性能和X射线检测的影响.

主要方法:

在FAPbBr3 SCs中表面缺陷类型的表征.
应用PEAI溶液进行表面处理.
对离子迁移,载体寿命,陷密度和暗电流的评估.
测量X射线检测性能的测量.

主要成果:

PEAI 和 2D PEA2PbI4 层有效地使金属 Pb 和 Br 的空隙无效.
PEAI处理延长了载体寿命,减少了陷密度,并抑制了离子迁移.
2D PEA2PbI4层提供密集的覆盖,抑制离子迁移,降低暗电流.
通过PEAI被动化的FAPbBr3 SC检测器在X射线灵敏度上呈现出十倍的增加.

结论:

表面被动化对于提高矿SCs的质量和性能至关重要.
PEAI治疗提供了一种可行的策略,以增强SCs用于先进的辐射检测应用.

关键词:

一个X射线探测器.异质连接异质连接离子迁移离子迁移矿是一种单晶的矿.表面处理表面处理

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