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

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.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
806096
Report Number(s):
LBNL--46926
R&D Project: 5067001; TRN: US0301138
DOE Contract Number:
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: 25th International Conference on the Physics of Semiconductors, Osaka (JP), 07/31/2000; Other Information: PBD: 30 Apr 2000
Research Org:
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Org:
USDOE Director, Office of Science. Office of Basic Energy Studies. Materials Science and Engineering Division; National Science Foundation (US)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; BETHE-SALPETER EQUATION; OPTICAL PROPERTIES; PHYSICS; POLYMERS