[Wien] (no subject)

[delamora]

Interesting question for me

My answer is that when you have small orbitals that do not overlap, like 4f, mixed with larger orbitals, then they do not contribute to the conductivity.

So optical gap is smaller than electronic gap

You can check wikipedia;

https://en.wikipedia.org/wiki/Band_gap

Also;

https://www.researchgate.net/post/What_is_the_basic_difference_between_optical_band_gap_and_electrical_band_gap

[https://i1.rgstatic.net/ii/profile.image/AS%3A272204856295433%401441910103151_l]<https://www.researchgate.net/post/What_is_the_basic_difference_between_optical_band_gap_and_electrical_band_gap>

What is the basic difference between optical band gap and ...<https://www.researchgate.net/post/What_is_the_basic_difference_between_optical_band_gap_and_electrical_band_gap>
www.researchgate.net
What is the basic difference between optical band gap and electrical band gap?



________________________________
De: wien-bounces at zeus.theochem.tuwien.ac.at <wien-bounces at zeus.theochem.tuwien.ac.at> en nombre de said chibani <chibanisaid102 at gmail.com>
Enviado: sábado, 19 de marzo de 2016 04:43 a. m.
Para: A Mailing list for WIEN2k users
Asunto: [Wien] (no subject)

Dear Wien Users,
what is the difference between electronic gap  and optical gap ? and how to determine lectronic gap  from the optical properties ?

Best wishes
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