Recent Progress of Heterojunction Ultraviolet Photodetectors: Materials, Integrations, and Applications
Recent Progress of Heterojunction Ultraviolet Photodetectors: Materials, Integrations, and Applications
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DOI：
10.1002/adfm.201909909
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发表时间：
2020-02-14
影响因子：
19
通讯作者：
Fang, Xiaosheng
中科院分区：
文献类型：
--
作者：
Chen, Jiaxin;Ouyang, Weixin;Fang, Xiaosheng
具有“5S”（高灵敏度、高信噪比、优异的光谱选择性、快的速度和高的稳定性）的紫外探测器是近年来被提出的一种有前途的光电子技术。为了实现高性能的UV pd，我们创建了异质结来形成一个内置电场，以抑制光生载流子的重组，提高收集效率。在本进展报告中，讨论了异质结的基本组成部分，包括紫外响应半导体和其他具有独特效应的功能化材料。然后，总结了用晶格匹配异质结、范德华异质结和其他异质结构建pd的策略。最后，讨论了基于异质结/异质结构的UV pd的几种应用，包括柔性光电探测器、逻辑门和图像传感器。本文概述了异质结/异质结构紫外光二极管中应用的各种材料和基本组装方法，这将有助于带来新的可能性，并呼吁更多的努力来释放异质结的潜力。
Ultraviolet photodetectors (UV PDs) with "5S" (high sensitivity, high signal-to-noise ratio, excellent spectrum selectivity, fast speed, and great stability) have been proposed as promising optoelectronics in recent years. To realize high-performance UV PDs, heterojunctions are created to form a built-in electrical field for suppressing recombination of photogenerated carriers and promoting collection efficiency. In this progress report, the fundamental components of heterojunctions including UV response semiconductors and other materials functionalized with unique effects are discussed. Then, strategies of building PDs with lattice-matched heterojunctions, van der Waals heterostructures, and other heterojunctions are summarized. Finally, several applications based on heterojunction/heterostructure UV PDs are discussed, compromising flexible photodetectors, logic gates, and image sensors. This work draws an outline of diverse materials as well as basic assembly methods applied in heterojunction/heterostructure UV PDs, which will help to bring about new possibilities and call for more efforts to unleash the potential of heterojunctions.