Is there relationship between resistivity and bandgap?

AI Thread Summary
In semiconductor materials, the relationship between bandgap size and resistivity is not straightforward. While a larger bandgap does influence resistivity, particularly in relation to temperature changes, it does not directly correlate to higher resistivity in all cases. The conductivity, which is inversely related to resistivity, depends more on carrier concentration and mobility, which can be modified through doping. Additionally, the IV characteristics can illustrate differences in behavior between materials with varying bandgaps. Overall, the connection between bandgap and resistivity is complex and influenced by multiple factors.
Kit
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is the material, which has a larger bandgap, more resistive:confused: ?

thanks for answering:smile:

kit
 
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As far as I know for semiconductors, there isn't any relationship. The bandgap has to do with the atomic arrangment. The conductivity, which is the inverse of resistivity, is a function of carrier concentration and mobility. These can be altered through doping. I don't even see a relationship among intrinsic samples.
 
Kit said:
is the material, which has a larger bandgap, more resistive:confused: ?
thanks for answering:smile:
kit

Your question itself is confusing.

There is a clear connection between the two as far as the dependence of the resistivity as a function of temperature. In other words, someone with a larger bandgap will have a different temperature evolution of resistivity when compared with another material with a smaller band gap.

One can also plot the IV characteristics and see a "gap" in the low voltage region, the size of which corresponds to the size of the band gap.

But really, I'm not sure what exactly the question is asking for.

Zz.
 
i have a clearer picture now

thanks for answering:smile:
 

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