Hello everyone. Right now i'm learning about carbon electrical properties for my final assignment in college. But somehow i just can't find the intrinsic carrier concentration properties for carbon. I've found the graphics that show me the relationship between the intrinsic carrier concentration and temperature, but just for Germanium, Silicon and GaAs. Could someone help me with this problem ? Oh, and one more question. Does the electron affinity property for carbon nanotubes (CNT) is different from the original carbon ? I read that electron affinity is an invariant fundamental property of the specified material, so i wondered whether it'll be the same or not for carbon and CNT. Thanks in advance.