Dear Student ,
The correct answer is - Photodiode.
Optoelectronic devices are semiconductor devices in which the carriers are generated by protons via photo excitation.
A photodiode is a special type of junction diode that is used for detecting optical signals. It is a reverse biased p – n junction that is made from photosensitive material. The current in the photodiode changes with a change in the light intensity (I) when a reverse bias is applied.