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Photosensitive Dielectric 2D Perovskite Based Photodetector for Dual Wavelength Demultiplexing
Advanced Materials ( IF 27.4 ) Pub Date : 2023-03-14 , DOI: 10.1002/adma.202300632
Bao-Shi Qiao 1 , Su-Yun Wang 2 , Zhi-Hong Zhang 1, 3 , Zhen-Dong Lian 1 , Zhi-Yao Zheng 4 , Zhi-Peng Wei 3 , Lin Li 5 , Kar Wei Ng 1 , Shuang-Peng Wang 1 , Zhi-Bo Liu 2
Advanced Materials ( IF 27.4 ) Pub Date : 2023-03-14 , DOI: 10.1002/adma.202300632
Bao-Shi Qiao 1 , Su-Yun Wang 2 , Zhi-Hong Zhang 1, 3 , Zhen-Dong Lian 1 , Zhi-Yao Zheng 4 , Zhi-Peng Wei 3 , Lin Li 5 , Kar Wei Ng 1 , Shuang-Peng Wang 1 , Zhi-Bo Liu 2
Affiliation
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Stacked 2D perovskites provide more possibilities for next generation photodetector with more new features. Compared with its excellent optoelectronic properties, the good dielectric performance of metal halide perovskite rarely comes into notice. Here, a bifunctional perovskite based photovoltaic detector capable of two wavelength demultiplexing is demonstrated. In the Black Phosphorus/Perovskite/MoS2 structured photodetector, the comprehensive utilization of the photosensitive and dielectric properties of 2D perovskite allows the device to work in different modes. The device shows normal continuous photoresponse under 405 nm, while it shows a transient spike response to visible light with longer wavelengths. The linear dynamic range, rise/decay time, and self-powered responsivity under 405 nm can reach 100, 38 µs/50 µs, and 17.7 mA W-1, respectively. It is demonstrated that the transient spike photocurrent with long wavelength exposure is related to the illumination intensity and can coexist with normal photoresponse. Two waveband-dependent signals can be identified and used to reflect more information simultaneously. This work provides a new strategy for multispectral detection and demultiplexing, which can be used to improve data transfer rates and encrypted communications. This work mode can inspire more multispectral photodetectors with different stacked 2D materials, especially to the optoelectronic application of the wide bandgap, high dielectric photosensitive materials.
中文翻译：
用于双波长解复用的基于光敏电介质二维钙钛矿的光电探测器
堆叠的二维钙钛矿为具有更多新功能的下一代光电探测器提供了更多可能性。与其优异的光电性能相比，金属卤化物钙钛矿良好的介电性能很少引起人们的注意。在这里，展示了一种基于双功能钙钛矿的光伏探测器，能够进行两个波长的解复用。在黑磷/钙钛矿/MoS 2结构光电探测器，综合利用二维钙钛矿的光敏和介电特性，使器件可以工作在不同的模式下。该器件在 405 nm 下表现出正常的连续光响应，而对波长较长的可见光表现出瞬态尖峰响应。405nm下的线性动态范围、上升/衰减时间、自供电响应度可达100、38µs/50µs、17.7mA W -1， 分别。结果表明，长波长曝光的瞬态尖峰光电流与光照强度有关，可以与正常的光响应共存。两个波段相关信号可以被识别并用于同时反映更多信息。这项工作为多光谱检测和多路分解提供了一种新策略，可用于提高数据传输速率和加密通信。这种工作模式可以激发更多具有不同堆叠二维材料的多光谱光电探测器，特别是宽带隙、高介电光敏材料的光电应用。
更新日期：2023-03-14
中文翻译：
用于双波长解复用的基于光敏电介质二维钙钛矿的光电探测器
堆叠的二维钙钛矿为具有更多新功能的下一代光电探测器提供了更多可能性。与其优异的光电性能相比，金属卤化物钙钛矿良好的介电性能很少引起人们的注意。在这里，展示了一种基于双功能钙钛矿的光伏探测器，能够进行两个波长的解复用。在黑磷/钙钛矿/MoS 2结构光电探测器，综合利用二维钙钛矿的光敏和介电特性，使器件可以工作在不同的模式下。该器件在 405 nm 下表现出正常的连续光响应，而对波长较长的可见光表现出瞬态尖峰响应。405nm下的线性动态范围、上升/衰减时间、自供电响应度可达100、38µs/50µs、17.7mA W -1， 分别。结果表明，长波长曝光的瞬态尖峰光电流与光照强度有关，可以与正常的光响应共存。两个波段相关信号可以被识别并用于同时反映更多信息。这项工作为多光谱检测和多路分解提供了一种新策略，可用于提高数据传输速率和加密通信。这种工作模式可以激发更多具有不同堆叠二维材料的多光谱光电探测器，特别是宽带隙、高介电光敏材料的光电应用。
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