Tin dioxide from first principles: Quasiparticle electronic states and optical properties

A. Schleife, J. B. Varley, F. Fuchs, C. Rödl, F. Bechstedt, P. Rinke, A. Janotti, C. G. Van De Walle

Research output: Contribution to journalArticlepeer-review

Abstract

The structural, electronic, and optical properties of the semiconducting oxide SnO2 are investigated using first-principles calculations. We employ the G0W0 formalism based on hybrid-functional calculations to compute the quasiparticle band structure and density of states for which we find good agreement with results from photoemission and two-photon absorption experiments. We also address open questions regarding the band ordering and band symmetries. In a second step we use our electronic structure as a starting point to calculate optical spectra by solving the Bethe-Salpeter equation including the electron-hole interaction. The dielectric tensor is predicted for a wide range of photon energies. Our results resolve the long-standing discrepancy between theory and experiment on the highly anisotropic onsets of absorption. The anisotropy can be explained in terms of dipole-allowed direct transitions in the vicinity of the valence-band maximum without having to invoke lower-lying valence bands.

Original languageEnglish (US)
Article number035116
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number3
DOIs
StatePublished - Jan 18 2011
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Tin dioxide from first principles: Quasiparticle electronic states and optical properties'. Together they form a unique fingerprint.

Cite this