Multi-pixels gallium oxide UV detector array and optoelectronic applications

With the continuous advancement of deep-ultraviolet (DUV) communication and optoelectronic detection, research in this field has become a significant focal point in the scientific community. For more accurate information collection and transport, the photodetector array of many pixels is the key of the UV imaging and commnication systems, and its photoelectric performance seriously depends on semiconductor material and array layout. Gallium oxide (Ga₂O₃) is an emerging wide bandgap semicondutor material which has been widely used in DUV dectection. Therefore, this paper mainly focuses on Ga₂O₃semiconductor detector array which has gained widespread attention in the field of DUV technique, from the perspective of individual device to array and its optoelectonic integration, for reviewing and discussing the research progress in design, fabrication, and application of Ga₂O₃arrays in recent years. It includes the structure design and material selection of array units, units growth and array layout, response to solar blind light, the method of imaging and image recognition. Morever, the future development trend of the photodetector array has been analyzed and reflected, aiming to provide some useful suggestions for the optimizing array structure, improving patterned growth technology and material growth quality. As well as Ga₂O₃optoelectronic devices and their applications are discussed in view of device physics and photophysics in detector.