PIN Photodiode Chip

PIN photodiode is a device used to detect optical signals, which has the advantages of better response speed, sensitivity and low noise than traditional photodiodes. It is widely used in many fields, such as communication, photoelectric conversion and optical measurement. The structure of the PIN photodiode is divided into three parts: P-region, N-region and Intrinsic region. Among them, the P and N regions form PN junctions, and the P and Intrinsic regions form PIN junctions, which are the so-called "doping regions".