The working principle and main characteristics of photodiodes 3

5) Dark current: Dark current refers to the current generated by a photodiode itself in the absence of light irradiation. The smaller the dark current, the higher the sensitivity of the photodiode.diode,

(6) Response time: Response time refers to the time it takes for a photodiode to receive a light signal and generate the corresponding current. Short response time means that photodiodes can quickly respond to changing light signals.

In short, photodiodes convert light energy into electrical energy through the photoelectric effect, and have the characteristics of fast response, high quantum efficiency, and wide spectral response range. This makes photodiodes an important device in the fields of photodetection and communicationdiode,