Answer to Question #61797 in Electric Circuits for Hossein Yazdi

Question

Can a semiconductor excite while absorbing an electric pulse?

I mean if an electric pulse conductS a semiconductor, does that semiconductor excite and as a result emit a photon? if yes, how?

I don't refer to metals or insulators, but I mean and am talking exactly about semiconductors. And I do mean exactly the smallest and weakest possible electric pulse you can imagine. Knowing these details I want to find out that if it is possible to cause a semiconductor in normal conditions (room temperature and pressure, not high temperatures) excite and thereafter causing it emitting a photon.