Conduction and valence bands in semiconductors

  • #1
16
0
Why is the conduction band state s-type and the corresponding valence band state p-type?
 

Answers and Replies

  • #2
DrDu
Science Advisor
6,186
842
This is not generally true. What material are you considering and where in k-space?
 
  • #3
ZapperZ
Staff Emeritus
Science Advisor
Education Advisor
Insights Author
35,977
4,683
Why is the conduction band state s-type and the corresponding valence band state p-type?

You really should cite where you get such a thing.

As DrDu as pointed, this is not true always and it is material dependent. For example, Cu, a common metal, has the 3d electrons as its valence shell, and thus, the 3d electrons that participate in the conduction band, not the 4s electrons. This already negates the starting point of your question.

Zz.
 
  • #4
16
0
For example, here https://www3.nd.edu/~djena/kdotp.pdf [Broken] it is stated that "For direct-gap semiconductors, for states near the conduction-band minimum (k = 0), the Bloch lattice-function possesses the same symmetry properties as a |S> state . In other words, it has spherical symmetry. The states at the valence band maxima , on the other hand, have the symmetry of p-orbitals"
 
Last edited by a moderator:

Related Threads on Conduction and valence bands in semiconductors

Replies
5
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
10K
Replies
5
Views
302
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
6
Views
4K
Replies
1
Views
5K
  • Last Post
Replies
12
Views
3K
Replies
6
Views
995
Top