光探测
硫系化合物
光电探测器
材料科学
光电子学
窄带
光伏
载流子
宽带
半导体
纳米技术
光伏系统
光学
物理
电气工程
工程类
作者
Yalun Xu,Ruiming Li,Songxue Bai,Yanyan Li,Zhenglin Jia,Yujie Yang,Enkang Cui,Fang Yao,Du Wang,Cheng Lei,Qianqian Lin
标识
DOI:10.1002/adfm.202212523
摘要
Abstract Chalcogenide‐based semiconductors have recently emerged as promising candidates for optoelectronic applications, mainly benefiting from their facile and low‐cost processability, chemical versatility, and tunable optoelectronic properties. Despite the recent success of chalcogenide‐based thin‐film photovoltaics, they have been barely leveraged in photodetection, mainly due to the complicated charge transport related to the trap states. In addition, most of the chalcogenide photodetectors are reported for broadband, visible photodetection, which is facile but lacks of impact for real applications. However, it is also possible to modulate the charge carrier dynamics of chalcogenide‐based materials, and devise novel devices, which can possess extra compelling features. These possibilities provide strong incentives for a detailed study on the chalcogenides‐based narrowband photodetectors, which are achieved by a filterless, charge collection narrowing strategy. The optimized narrowband photodetectors also exhibit extremely fast‐response (≈240 ns), relatively low dark current and noise, large linear dynamic range, and most importantly tunable spectral discrimination covering the whole range from UV to NIR. These devices also demonstrate great potential for imaging and communication.
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