All Questions
9
questions
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501
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Quasi-fermi levels in a solar cell?
I was wondering, if my fermi levels splits up due to n and p type doping into two fermi levels, one for the p type one for the n type, and now due to light radiation my fermi levels split up into 2 ...
CommunityBot
- 1
1
vote
1
answer
219
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How can NO charge carriers exist in the depletion region?
I learned that no charge carriers exist in the depletion region of a PN junction due to the balance between the diffusion current and the drift current due to the electric field created by charged ...
- 21.8k
2
votes
1
answer
988
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Confusion regarding Hall effect in semiconductors
In many places, it's mentioned that in hall effect, the holes move under the influence of magnetic field in the direction as shown in the figure. In this figure itself, the bound electrons move in the ...
CommunityBot
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0
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1
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730
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What is the relation between the short-circuit current and the band gap energy in solar cells?
For the VOC it is:
VOC = E_g - something,
where something is positive and depends on the Urbach energy. Otherwise it should be linear:
https://aip.scitation.org/doi/pdf/10.1063/1.49397
For the ISC I ...
- 3,299
1
vote
4
answers
16k
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How is current produced in semiconductors or metals?
I think current is the movement of electrons through the wire or semiconductor, thus when I press the switch of the light bulb the electrons go from positive part to tungsten and light is produced. ...
- 60.3k
0
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1
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2k
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How to know a semiconductor is p type or n type from hall effect calculations? [closed]
Using the hall effect calculations how can we determine a semiconductor is p type or n type
- 331
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1
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76
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At what pressure do semiconductors break down? [closed]
So let's say you were going to send some electronics to the bottom of the ocean, 3-5km down. This would be about $5km*1000kg=5Mkgf/m^{2}$. So at what pressure do circuit boards, transistors, etc stop ...
- 9,943
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votes
1
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180
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If we inject charge carriers into insulators, will they become conductors?
Since there're also valance band and empty band in insulators, if we introduce electrons in empty band or holes in valance band, will it conduct electric current like semiconductors?
For example, we ...
- 16.9k
2
votes
1
answer
3k
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How is contact resistivity defined for a Schottky contact, or the Schottky barrier height for an ohmic contact?
Based on the transfer length method (TLM), one can accurately calculate the contact resistivity for an ohmic contact, by evaluating the absolute resistance measured through the test structure and ...
- 16.7k