Urmi
Junior Member level 2
Semiconductor Physics...
Hi everyone! I've just got a few questions to ask about semiconductor diodes and what hapens inside them. My questions are:
1.In terms of diode resistance and current,what happens in a diode at extremely large forward biases? (i.e does the intrinsic resistance value of the diode decrease? Also,the current can't really become infinite,so do all the bonds in the semiconductor break up?)
2.How does zener diode regain itself after the breakdown...I mean during breakdown ,all the bonds break up and the diode kind of blasts....but then we can use the same zener diode for later applications,so how do all the broken bonds in the diode restored all on their own?
3. Often,electrons generated as a result of electron-hole pair generation cross the depletion region....how is this possible? Aren't the electrons supposed to be repelled back by the stationary charges in the depletion region?
Hi everyone! I've just got a few questions to ask about semiconductor diodes and what hapens inside them. My questions are:
1.In terms of diode resistance and current,what happens in a diode at extremely large forward biases? (i.e does the intrinsic resistance value of the diode decrease? Also,the current can't really become infinite,so do all the bonds in the semiconductor break up?)
2.How does zener diode regain itself after the breakdown...I mean during breakdown ,all the bonds break up and the diode kind of blasts....but then we can use the same zener diode for later applications,so how do all the broken bonds in the diode restored all on their own?
3. Often,electrons generated as a result of electron-hole pair generation cross the depletion region....how is this possible? Aren't the electrons supposed to be repelled back by the stationary charges in the depletion region?