Spectroscopic ellipsometry investigation of electronic states and optical properties of thin films from Ge30AsxSe70-x system.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F20%3A39917187" target="_blank" >RIV/00216275:25310/20:39917187 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0022309320301654?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309320301654?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2020.120048" target="_blank" >10.1016/j.jnoncrysol.2020.120048</a>

Result language

angličtina

Original language name

Spectroscopic ellipsometry investigation of electronic states and optical properties of thin films from Ge30AsxSe70-x system.

Original language description

This paper deals with the investigation of the optical properties of thin films from the Ge30AsxSe70-x system. The complex permittivity, (epsilon) over cap = epsilon(1) + i epsilon(2), and the optical band gap, E-g(opt) were determined by spectroscopic ellipsometry measurements. The spectra of epsilon 2 in the ultraviolet spectral range were analysed on the base of the existing literature data for the valence band spectra obtained by X-ray photoelectron spectroscopy. It was found that the absorption in the spectral range 2.0-6.5 eV is related to the bonding and anti-bondingp-orbitals of Ge, Se and As atoms. The temperature coefficients of linear expansion, refractive index and the band gaps were determined. The evaluated values for the non-linear refractive index, gamma, and the two-photon absorption coefficient, beta, showed that the thin films exhibit a highly non-linear refractive index at the telecommunication wavelength.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

—

Volume of the periodical

538

Issue of the periodical within the volume

120048

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

1-9

UT code for WoS article

000527030200011

EID of the result in the Scopus database

2-s2.0-85082009213