What does band gap bowing means?

[gjfelix2001]

what does "band gap bowing" means?

Hi, i speak spanish, and I've tried to translate the term "band gap bowing", but literally it doesn't have any sense. So, can anyone explain this term to me so i can translate it correctly?? Thanks a lot.

 

[chroot]

The "band gap" is the energy gap between the valence band and conduction bads. "Bowing" is a synonym for "bending."

So "band gap bowing" refers to a bending of the band gap.

- Warren

 

[Oudeis Eimi]

Hi, i speak spanish, and I've tried to translate the term "band gap bowing", but literally it doesn't have any sense. So, can anyone explain this term to me so i can translate it correctly?? Thanks a lot.

The equivalent term in Spanish is "curvatura de la banda prohibida".
More generally, "band bowing" corresponds to "curvatura de bandas".

 

[aron]

Hi, i speak spanish, and I've tried to translate the term "band gap bowing", but literally it doesn't have any sense. So, can anyone explain this term to me so i can translate it correctly?? Thanks a lot.

generally in relation to alloy formation band gap bowing refers to the deviation away from a linear combination of the two end materials.

e.g. material A has a band gap of X, material B has a band gap of Y.

the band gap of the AB alloy = 1/2(X)+1/2(Y)-1/4B, where B is the band gap bowing coefficient.

i hope that helps.