Questions tagged [energy-band]
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Potential distribution in MOSFET
Let us assume that an NMOSFET has its source, drain and substrate grounded therefore VDS and VSB=0 V . We apply a gate voltage VGS=2 V and I want to know how this potential is distributed as we move from gate towards substrate.
Let us assume the…
user14598090
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Is there any specific application for an indirect band gap semiconductor?
I know that direct band gap semiconductors are very attractive for optical emission, and even though indirect band gap are used as well, I keep wondering: is there any technology that specifically makes use of an indirect bandgap semiconductor? In…
Bidon
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Fermi levels in PN-junction under forward bias are not constant throughout each side
This is, in a way, a follow-up to this question.
I see the following band diagram for a forward biased diode everywhere:
In the above picture, I marked a point with potential zero (where battery is connected to the N-type material) and chose two…
Sgg8
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A question about basic band gap theory
I always encounter assertions similar to the following quote:
The electrons in the conduction band have higher energy than those in the valence band of a semiconductor.
We know by definition the conduction band is much more further away from the…
GNZ
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Why are low band gap semiconductors (like silicon) not ideal for most solar cells? Are their atoms ionized by higher-energy photons?
Most sources on the web say that 1.3 eV or 1.4 eV is 'ideal' for most solar cells...
What happens to lower-gap, gapless or overlap materials (conductors)? Are they ionized, rather than sending their electrons neatly into the conduction band?
P.S.:…
Kurt Hikes
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Calculating effective mass of electron from energy band diagram
How can I calculate the effective mass of electron in the conduction band of silicon with the approximation that they are free, from its energy band diagram by my hand - not software or something else?
Ecem
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