Ab initio study of optical absorption spectra of semiconductors and conjugated polymers
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Ab initio study of optical absorption spectra of semiconductors and conjugated polymers

  • Author(s): Tiago, M.L.
  • Chang, Eric K.
  • Rohlfing, Michael
  • Louie, Steven G.
  • et al.
Abstract

The effects of electron-hole interaction on the optical properties of a variety of materials have been calculated using an ab initio method based on solving the Bethe-Salpeter equation. Results on selected semiconductors, insulators, and semiconducting polymers are presented. In the cases of alpha-quartz (SiO2) and poly-phenylene-vinylene, resonant excitonic states qualitatively alter the absorption spectra.

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