Recent content by itsbiprangshu

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    Graduate Highery energy photon on lower band gap semiconductor

    Can a semiconductor absorb a higher energy photon than its Band gap Eg and make a transition from valence band to conduction band? For a example commonly used IR detector is InAs (semiconductor) whose Eg is 0.354 eV, if a blue light falls on it, will it able to absorve that energy and make a...
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    Graduate Transition from valence band to conduction at T above 0K + procedure

    we know that at temperature above 0K, in semiconductor some electron collecting sufficient energy fron surroundings to cross the band gap, placed in the conduction band. But what's the actual procedure to make the transition. I mean to say is it direct absorption of IR photons or by some other...
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    Graduate Indirect Transition in indirect semicondutor material

    In case of indirect transition in an indirect semiconductor material, momentum as well as energy changes. I got from the book "solid state electronics devices" by Streetmen & Banerjee that in such kind of transition "the energy is generally given up as heat to latice rather than as an emitted...