Self-filtering narrowband perovskite photodetector with ultra-narrowband and high spectral rejection ratio
Self-filtering narrowband perovskite photodetector with ultra-narrowband and high spectral rejection ratio
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DOI：
10.1063/5.0120959
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发表时间：
2022-10
期刊：
影响因子：
6.1
通讯作者：
Y. Liao;Xin Wang;Yuzhu Pan;Yubing Xu;Qing Li;Xiaobing Zhang;J. Chen;Zhuoya Zhu;Zhiwei Zhao-Zhiwei
中科院分区：
文献类型：
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作者：
Y. Liao;Xin Wang;Yuzhu Pan;Yubing Xu;Qing Li;Xiaobing Zhang;J. Chen;Zhuoya Zhu;Zhiwei Zhao-Zhiwei
窄带光电探测器在许多只需要探测特定波长范围的光的领域有着广阔的应用前景。然而，现有的窄带探测器存在积分困难、半高宽不够窄、光谱抑制比不理想（≤20）等缺点。在这里，我们提出了一个自滤波光电探测器的基础上MAPbX 3单晶具有非常窄的光谱响应和半峰全宽为15 nm。它还显示出高的响应度（100 mA/W）和高的光谱抑制比（300 mA/W）。更重要的是，响应光谱可以在一定范围内（从440至560 nm）通过改变卤化物的组成，从而其带隙调谐。这为自滤波窄带光电探测器提供了一种新的设计范例。
Narrowband photodetectors have broad application prospects in many fields where only a range of specific wavelengths of light needs to be detected. However, the current narrowband detectors have some disadvantages, such as the integration is difficult, the full width at half-maximum is not narrow enough, and the spectral rejection ratio is not ideal (≤20). Here, we present a self-filtering photodetector based on MAPbX3 single crystals with a very narrow spectral response and a full width of 15 nm at half maximum. It also shows a high responsivity (∼100 mA/W) and a high spectral rejection ratio (∼300). What is more, the response spectrum can be tuned within a certain range (from 440 to 560 nm) by varying the halide composition and thus its bandgap. This provides a new design paradigm for self-filtering narrowband photodetectors.