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Proceedings Paper

Model dielectric functional of amorphous materials including Urbach tail
Author(s): Martin Foldyna; Kamil Postava; J. Bouchala; Jaromir Pistora; Tomuo Yamaguchi
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Paper Abstract

A generalization of the Tauc-Lorentz model dielectric function of amorphous semiconductors and dielectrics is presented in which the exponential Urbach tail is included. The generalized parameterization of the optical functions includes only six fitting parameters. The real part of the dielectric function is calculated using analytical Kramers-Kronig dispersion relations. The model is applied to hydrogenated amorphous silicon.

Paper Details

Date Published: 7 April 2004
PDF: 5 pages
Proc. SPIE 5445, Microwave and Optical Technology 2003, (7 April 2004); doi: 10.1117/12.560673
Show Author Affiliations
Martin Foldyna, Technical Univ. of Ostrava (Czech Republic)
Kamil Postava, Technical Univ. of Ostrava (Czech Republic)
J. Bouchala, Technical Univ. of Ostrava (Czech Republic)
Jaromir Pistora, Technical Univ. of Ostrava (Czech Republic)
Tomuo Yamaguchi, Shizuoka Univ. (Japan)


Published in SPIE Proceedings Vol. 5445:
Microwave and Optical Technology 2003
Jaromir Pistora; Kamil Postava; Miroslav Hrabovsky; Banmali S. Rawat, Editor(s)

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