How Does Temperature Affect Semiconductor Energy Gaps?

[Elliptic]

THE TEMPERATURE DEPENDENCE OF THE ENERGY GAPS IN SEMICONDUCTORS

Where I can find text about this topic and models that describe this?
I know about Linear and Varshni models, and what about two (or more) other models?

 

[M Quack]

https://www.amazon.com/dp/0470537949/?tag=pfamazon01-20

Sze will tell you everything you ever wanted to know about semiconductors - and then some.

If you are looking for something more general, try Ashcroft and Mermin

https://www.amazon.com/dp/0030839939/?tag=pfamazon01-20