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Centimeter-size single crystals of 2D hybrid perovskites for shortwave light photodetection with a low detection limit
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2023-03-09 , DOI: 10.1039/d2tc05466c Chengshu Zhang 1, 2 , Hao Xiao 1 , Qianwen Guan 1, 3 , Tingting Zhu 1, 2 , Lishan Liang 1 , Ruiqing Li 1, 3 , Huang Ye 1, 3 , Xinyi Niu 1 , Junhua Luo 1, 2, 3, 4, 5
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2023-03-09 , DOI: 10.1039/d2tc05466c Chengshu Zhang 1, 2 , Hao Xiao 1 , Qianwen Guan 1, 3 , Tingting Zhu 1, 2 , Lishan Liang 1 , Ruiqing Li 1, 3 , Huang Ye 1, 3 , Xinyi Niu 1 , Junhua Luo 1, 2, 3, 4, 5
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Two-dimensional (2D) organic–inorganic hybrid perovskite materials have been vigorously developed for shortwave light photodetection due to their strong light absorption and excellent semiconductor properties. However, 2D hybrid perovskites with low detection limits have not been widely studied, which hinders their application in weak shortwave light detection. Herein, sensitive weak shortwave light detection with a low detection limit was achieved in the centimeter-size single crystals of 2D hybrid perovskite (PA)2PbBr4 (1, PA = CH3CH2CH2NH3+). Beneficial to centimeter-size high-quality single crystals, 1 exhibits a low defect density of 1.66 × 1010 cm−3 and a low dark current of 2.81 × 10−12 A, which is favorable for photoelectric detection. Importantly, even in the vicinity of the minimum photosensitive light intensity of 2D perovskite of 20 nW cm−2, the photodetector based on 1 still exhibits a remarkable photoelectric response. Meanwhile, the detector shows an excellent detectivity of 6.08 × 1012 Jones and responsivity of 91.2 mA W−1. This work demonstrates the promising potential of 2D hybrid perovskites for weak shortwave light detection and provides a new perspective for their future photodetection application.
中文翻译：
用于低检测限的短波光检测的厘米级二维杂化钙钛矿单晶
二维（2D）有机-无机杂化钙钛矿材料由于其强光吸收和优异的半导体性能而被大力开发用于短波光检测。然而，检测限低的二维杂化钙钛矿尚未得到广泛研究，这阻碍了其在弱短波光检测中的应用。在此，在二维杂化钙钛矿 (PA) 2 PbBr 4 ( 1 , PA = CH 3 CH 2 CH 2 NH 3 + )的厘米级单晶中实现了具有低检测限的灵敏的弱短波光检测。有利于厘米级优质单晶，1具有1.66×10 10 cm -3的低缺陷密度和2.81×10 -12 A的低暗电流，有利于光电检测。重要的是，即使在20 nW cm -2的二维钙钛矿的最小光敏光强度附近，基于1的光电探测器仍然表现出显着的光电响应。同时，探测器显示出 6.08 × 10 12 Jones 的出色探测率和 91.2 mA W -1的响应率。这项工作展示了二维杂化钙钛矿在弱短波光检测方面的巨大潜力，并为其未来的光电检测应用提供了新的视角。
更新日期：2023-03-09
中文翻译：
用于低检测限的短波光检测的厘米级二维杂化钙钛矿单晶
二维（2D）有机-无机杂化钙钛矿材料由于其强光吸收和优异的半导体性能而被大力开发用于短波光检测。然而，检测限低的二维杂化钙钛矿尚未得到广泛研究，这阻碍了其在弱短波光检测中的应用。在此，在二维杂化钙钛矿 (PA) 2 PbBr 4 ( 1 , PA = CH 3 CH 2 CH 2 NH 3 + )的厘米级单晶中实现了具有低检测限的灵敏的弱短波光检测。有利于厘米级优质单晶，1具有1.66×10 10 cm -3的低缺陷密度和2.81×10 -12 A的低暗电流，有利于光电检测。重要的是，即使在20 nW cm -2的二维钙钛矿的最小光敏光强度附近，基于1的光电探测器仍然表现出显着的光电响应。同时，探测器显示出 6.08 × 10 12 Jones 的出色探测率和 91.2 mA W -1的响应率。这项工作展示了二维杂化钙钛矿在弱短波光检测方面的巨大潜力，并为其未来的光电检测应用提供了新的视角。
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