can a diode also emit ultraviolet light?

Asked by ABHINAV SHARMA | 18th Nov, 2012, 06:57: PM

Expert Answer:

Yes, it can. Aphoto dode can emit.

 

When a light-emitting diode is forward-biased (switched on), electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroilluminance and the colour of the light (corresponding to the energy of the photon) is determined by the energy gap of the semiconductor.

Answered by  | 18th Nov, 2012, 08:53: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.