Dual-Mode 2D Perovskite X-Ray Detector With High Sensitivity and Spatial Resolution
Dual-Mode 2D Perovskite X-Ray Detector With High Sensitivity and Spatial Resolution
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DOI：
10.1109/led.2023.3271301
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发表时间：
2023-06
影响因子：
4.9
通讯作者：
Haipeng Di;Chang Lu;Lin Lei;Jiwei Ren;Ying Xiong;Yiying Zhao;Guang Yao;Feiyi Liao
中科院分区：
文献类型：
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作者：
Haipeng Di;Chang Lu;Lin Lei;Jiwei Ren;Ying Xiong;Yiying Zhao;Guang Yao;Feiyi Liao
金属卤化物钙钛矿是一种很有前途的辐射探测器材料。然而，钙钛矿半导体中的离子迁移和钙钛矿闪烁体中的热猝灭会降低直接和间接x射线探测的性能。在这里，我们提出了一种双模式钙钛矿x射线探测器，通过将二维（2D） （PEA）2PbI4钙钛矿微片转移到Au数字间电极上。高质量的2D钙钛矿（PEA）2PbI4具有离子迁移抑制和量子约束效应，使得x射线探测器可以在直接半导体模式和间接闪烁模式下同时工作。该探测器具有良好的灵敏度为$169.8 \mu \text{C} \ \ maththrm {Gy}_{\text {air}}^{-{1}}$ cm−2，空间分辨率为13.8 lp mm−1。我们的工作为高灵敏度和空间分辨率的二维钙钛矿双模辐射探测器开辟了新的途径。
Metal halide perovskites have been promising materials for radiation detectors. However, ion migration in perovskite semiconductors and thermal quenching in perovskite scintillators deteriorate the performance of direct and indirect X-ray detection. Here, we propose a dual-mode perovskite X-ray detector by transferring a two-dimensional (2D) (PEA)2PbI4 perovskite microsheet on Au interdigital electrodes. High-quality 2D perovskite (PEA)2PbI4 possesses ion migration suppression and quantum confinement effect, rendering the simultaneous operation of the X-ray detector in direct semiconductor mode and indirect scintillation mode. The detector shows a good sensitivity of $169.8 \mu \text{C} \ \mathrm{Gy}_{\text {air}}^{-{1}}$ cm−2 and the spatial resolution is 13.8 lp mm−1. Our work opens a new path for high sensitivity and spatial resolution 2D perovskites dual-mode radiation detectors.