3 ms·
I should probably be fired for my prior answer because things like pn-junction diodes can definitely have an exponential-like dependence on temperature. In my
by evancox100 3y ago
I should probably be fired for my prior answer because things like pn-junction diodes can definitely have an exponential-like dependence on temperature.
In my head I was thinking of pure elements, like bulk metals. But there definitely could be more interesting things going on in the sample, like diode formation (internally or at the contacts) or weird doping profiles. That may be part of why it's hard to measure the properties!
- adrian_b 3y agoIntrinsic semiconductors or the semiconductors that are lightly doped with impurities have temperature ranges where the concentration of the free charge carriers increases exponentially with increasing temperature, like in the NTC (negative temperature coefficient) thermistors. This causes a decrease in resistance towards higher temperatures, so it has nothing to do with any explanation for a decrease in resistance towards lower temperatures. The diodes have increasing inverse currents towards higher temperatures, which also has nothing to do with any explanation for increasing currents towards lower temperatures.