1.

Which of the following is operated in forward bias?(a) LED(b) Zener diode(c) Photodiode(d) Solar cellI had been asked this question in a national level competition.My enquiry is from Semiconductor Electronics topic in section Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

Answer»

Right option is (a) LED

Easy explanation: A light-emitting DIODE (LED) converts electric energy into light energy. A LED is a heavily doped p-n junction which under FORWARD bias emits spontaneous radiation. The semiconductor used for the FABRICATION of visible LEDs must at least have a bandgap of 1.8 EV.



Discussion

No Comment Found

Related InterviewSolutions