Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
Phys Rev Lett. 2008 Apr 25;100(16):167402. Epub 2008 Apr 25.

Nature of the band gap of In2O3 revealed by first-principles calculations and x-ray spectroscopy.

Author information

  • 1National Renewable Energy Laboratory, Golden, Colorado 80401, USA. aron_walsh@nrel.gov

Abstract

Bulk and surface sensitive x-ray spectroscopic techniques are applied in tandem to show that the valence band edge for In2O3 is found significantly closer to the bottom of the conduction band than expected on the basis of the widely quoted bulk band gap of 3.75 eV. First-principles theory shows that the upper valence bands of In2O3 exhibit a small dispersion and the conduction band minimum is positioned at Gamma. However, direct optical transitions give a minimal dipole intensity until 0.8 eV below the valence band maximum. The results set an upper limit on the fundamental band gap of 2.9 eV.

PMID:
18518246
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk