Understanding Semiconductors: Intrinsic, Extrinsic, and Nonstoichiometric

[asdf1]

Can someone explain the difference between an intrinsic, extrinsic and nonstocichiometric semiconductor?

 

[Astronuc]

I would think the answer to the question would be in one's textbook.

However - Undoped semiconductor material is called intrinsic semiconductor material.

and -
http://www.st-andrews.ac.uk/~jcgl/Scots_Guide/info/comp/conduct/semicond/semicond.htm

http://enpub.fulton.asu.edu/widebandgap/NewPages/SCbasics.html

Think about the significance of stoichiometry.

 

[asdf1]

thank you!