Electronic Devices - Semiconductors - Discussion
Discussion Forum : Semiconductors - General Questions (Q.No. 10)
10.
For a forward-biased diode, as temperature is ________, the forward current ________ for a given value of forward voltage.
Discussion:
17 comments Page 2 of 2.
Venkatasivamma said:
1 decade ago
As the temperature increases the width of potential barrier decreases there by decrease in the width of depletion layer.
That is the electrons get energy and crosses the depletion layer within in a short time. Hence the current increases (the flow of electrons has increased).
That is the electrons get energy and crosses the depletion layer within in a short time. Hence the current increases (the flow of electrons has increased).
Nick$ said:
1 decade ago
Why decrease in temperature affects decrease in current ?
Romio said:
1 decade ago
Then decrease in temperature affects decrease in current, it may be the answer.
Basha said:
1 decade ago
May be this will help you hari.
When temperature increases, the randomness in electrons flow increases which may lead in the improper flow but the applied voltage will make it as proper flow. So the flow of current should increase.
When temperature increases, the randomness in electrons flow increases which may lead in the improper flow but the applied voltage will make it as proper flow. So the flow of current should increase.
Hari shankar said:
1 decade ago
I have a doubt when temperature increases the ramdomness in electrons folw increases which may lead in the improper flow of control. So it should decrease the flow of current.
AMIT said:
1 decade ago
Ya of course the semiconductor has -ve temperature coeficient and due to foreward bias the depletion region decreases and current flow.
Shiva said:
1 decade ago
As temperature increases we know that depletion region decreases so it results flow of current increases for a given value of forward voltage.
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