Monoclinic Ga₂O₃ (β-Ga₂O₃) is a promising material for achieving solar-blind photodetection because of its unique characteristics, including its high breakdown electric field, radiation hardness, thermal and chemical stabilities, and intrinsic visible/solar-blind properties. Until now, several studies have investigated the development of high-performance β-Ga₂O₃ solar-blind photodetectors. However, these photodetectors can only detect the light intensity but not the light position. In this work, four-quadrant position-sensitive detectors (4Q-PSDs) were developed and demonstrated based on β-Ga₂O₃. 4Q-PSDs, comprising four identical metal-semiconductor-metal-structured photodetector components, demonstrate high uniformity, large signal-to-noise ratio, good ultraviolet/visible rejection ratio, and fast response/recovery time. Subsequently, the position of the illumination beam can be determined by analyzing the output signals of the four photodetector components. This work may indicate the promising application potential of the Ga₂O₃-based photodetectors in the fields of positioning, aligning, and monitoring the solar-blind beams.

中文翻译：

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Ga 2 O 3日盲位置敏感探测器

单斜嘎₂ ö ₃（β -Ga ₂ ö ₃）可以因为其独特的特性，包括其高击穿电场，辐射硬度，热稳定性和化学稳定性，以及内在的可见实现太阳能盲光电探测有前途的材料/太阳能-盲目特性。迄今为止，已有几项研究调查了高性能β - Ga ₂ O ₃太阳盲光电探测器的开发。但是，这些光电检测器只能检测光强度，而不能检测光位置。在这项工作中，基于β- Ga _2的四象限位置敏感检测器（4Q-PSDs）被开发和演示。O ₃。4Q-PSD包括四个相同的金属-半导体-金属结构的光电探测器组件，具有很高的均匀性，大的信噪比，良好的紫外线/可见光抑制比以及快速的响应/恢复时间。随后，可以通过分析四个光电探测器组件的输出信号来确定照明光束的位置。这项工作可能表明基于Ga ₂ O ₃的光电探测器在定位，对准和监视太阳盲光束领域中的有前途的应用潜力。