Solar‐Blind Position‐Sensitive Detectors Fabricated from β‐Ga2O3/Polycrystalline Diamond Heterojunctions

Solar‐blind detectors play important roles in military and civilian affairs, due to their high signal‐to‐noise ratio and low‐false alarm rate. In recent years, wide‐bandgap semiconductor‐based solar‐blind photodetectors have been studied extensively. However, very little attention has been paid to position detection of solar‐blind light. Herein, a solar‐blind position‐sensitive detector (PSD) is fabricated from β‐Ga 2 O 3 /polycrystalline diamond heterojunctions. The solar‐blind PSD shows good solar‐blind response characteristics. In addition, the output signals of the PSD are dependent on the position of the solar‐blind light spot, which can be utilized to realize position detection of solar‐blind signals.