Self‐powered ultraviolet (UV) photodetectors, which have vast applications in the military and for civilian purposes, have become particularly attractive in recent years due to their advantages of high sensitivity, ultrasmall size, and low power consumption. In particular, self‐powered UV photodetectors driven by a built‐in electric field cannot only detect UV signals but also be powered by the incident signals instead of external power. In this concept, the key issues and most recent developments on photovoltaic type UV photodetectors driven by p–n homojunction, heterojunction, and Schottky junction are surveyed. This should generate extensive interest in this field and encourage more researchers to engage in and tackle the scientific challenges.

中文翻译：

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内置电场驱动的自供电紫外光电探测器

自供电的紫外线（UV）光电探测器由于其高灵敏度，超小尺寸和低功耗的优势，近年来在军事和民用领域得到了广泛的应用，因此变得特别有吸引力。特别是，由内置电场驱动的自供电紫外线光电探测器不仅可以检测紫外线信号，而且还可以由入射信号而不是外部电源供电。在这个概念中，调查了由p–n同质结，异质结和肖特基结驱动的光伏型UV光电探测器的关键问题和最新进展。这应该引起人们对该领域的广泛兴趣，并鼓励更多的研究人员参与并应对科学挑战。