Expression of the optical constants of chalcogenide thin films
using the new parameterization dispersion model

J 2003

Expression of the optical constants of chalcogenide thin films using the new parameterization dispersion model

FRANTA, Daniel, Ivan OHLÍDAL, Miloslav FRUMAR and Jaroslav JEDELSKÝ

Basic information

Original name

Expression of the optical constants of chalcogenide thin films using the new parameterization dispersion model

Authors

FRANTA, Daniel (203 Czech Republic, guarantor), Ivan OHLÍDAL (203 Czech Republic), Miloslav FRUMAR (203 Czech Republic) and Jaroslav JEDELSKÝ (203 Czech Republic)

Edition

Applied Surface Science, USA, ELSEVIER (NORTH-HOLLAND), 2003, 0169-4332

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10302 Condensed matter physics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 1.284

RIV identification code

RIV/00216224:14310/03:00008103

Organization unit

Faculty of Science

UT WoS

000183967200022

Keywords in English

Dispersion model of the optical constants; Amorphous solids; Chalcogenide thin films

Abstract

V originále

In this paper, a new dispersion model of the optical constants of amorphous solids enabling us to perform an efficient parameterization of the spectral dependences of the optical constants of chalcogenide thin films will be presented. This dispersion model is based on mathematical modeling the density of electronic states (DOS) corresponding to both the valence and conduction bands. The imaginary part of the dielectric function is then calculated by the numerical convolution of the DOS. The real part of the dielectric function is calculated using the corresponding Kramers-Kronig (KK) relation in a suitable numerical way. Moreover, the existence of the transitions between the localized states inside the band gap and the extended states inside both the valence and conduction bands is also taken into account using the corresponding convolutions. Thus, the dispersion model presented includes the absorption corresponding to the Urbach and Tauc regions. Then the dispersion model described allows to interpret spectroellipsometric and spectrophotometric data measured for the chalcogenide thin films within the wide spectral region (200-900 nm).

Links

GA203/00/0085, research and development project

Name: Optické vlastnosti skel a amorfních tenkých vrstev sulfidů a selenidů

Investor: Czech Science Foundation, Optical properties of glasses and amorphous thin films of sulphides and selenides

Citovat

FRANTA, Daniel, Ivan OHLÍDAL, Miloslav FRUMAR and Jaroslav JEDELSKÝ. Expression of the optical constants of chalcogenide thin films using the new parameterization dispersion model. Applied Surface Science. USA: ELSEVIER (NORTH-HOLLAND), 2003, 212-213, No 1, p. 116-121. ISSN 0169-4332.

@article{487590,
   author = {Franta, Daniel and Ohlídal, Ivan and Frumar, Miloslav and Jedelský, Jaroslav},
   article_location = {USA},
   article_number = {1},
   keywords = {Dispersion model of the optical constants; Amorphous solids; Chalcogenide thin films},
   language = {eng},
   issn = {0169-4332},
   journal = {Applied Surface Science},
   title = {Expression of the optical constants of chalcogenide thin films using the new parameterization dispersion model},
   url = {http://hydra.physics.muni.cz/~franta/bib/ASS212_116.html},
   volume = {212-213},
   year = {2003}
}

TY  - JOUR
ID  - 487590
AU  - Franta, Daniel - Ohlídal, Ivan - Frumar, Miloslav - Jedelský, Jaroslav
PY  - 2003
TI  - Expression of the optical constants of chalcogenide thin films using the new parameterization dispersion model
JF  - Applied Surface Science
VL  - 212-213
IS  - 1
SP  - 116-121
EP  - 116-121
PB  - ELSEVIER (NORTH-HOLLAND)
SN  - 01694332
KW  - Dispersion model of the optical constants
KW  - Amorphous solids
KW  - Chalcogenide thin films
UR  - http://hydra.physics.muni.cz/~franta/bib/ASS212_116.html
N2  - In this paper, a new dispersion model of the optical constants of amorphous solids enabling us to perform an efficient parameterization of the spectral dependences of the optical constants of chalcogenide thin films will be presented. This dispersion model is based on mathematical modeling the density of electronic states (DOS) corresponding to both the valence and conduction bands. The imaginary part of the dielectric function is then calculated by the numerical convolution of the DOS. The real part of the dielectric function is calculated using the corresponding Kramers-Kronig (KK) relation in a suitable numerical way. Moreover, the existence of the transitions between the localized states inside the band gap and the extended states inside both the valence and conduction bands is also taken into account using the corresponding convolutions. Thus, the dispersion model presented includes the absorption corresponding to the Urbach and Tauc regions. Then the dispersion model described allows to interpret spectroellipsometric and spectrophotometric data measured for the chalcogenide thin films within the wide spectral region (200-900 nm).
ER  -

FRANTA, Daniel, Ivan OHLÍDAL, Miloslav FRUMAR and Jaroslav JEDELSKÝ. Expression of the optical constants of chalcogenide thin films using the new parameterization dispersion model. \textit{Applied Surface Science}. USA: ELSEVIER (NORTH-HOLLAND), 2003, 212-213, No~1, p.~116-121. ISSN~0169-4332.

Detailed Information on Publication Record