On the thickness dependence of both the optical band gap and reversible photodarkening in amorphous Ge-Se films.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00467629" target="_blank" >RIV/61389013:_____/16:00467629 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/16:39902095

Result on the web

<a href="http://dx.doi.org/10.1016/j.tsf.2016.10.037" target="_blank" >http://dx.doi.org/10.1016/j.tsf.2016.10.037</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tsf.2016.10.037" target="_blank" >10.1016/j.tsf.2016.10.037</a>

Result language

angličtina

Original language name

On the thickness dependence of both the optical band gap and reversible photodarkening in amorphous Ge-Se films.

Original language description

Amorphous Ge30.5Se69.5 and Ge39.5Se60.5 films were prepared by thermal evaporation from previously synthetized bulk glasses. We did not observe a shift in the optical band gap values associated with the change in film thickness for the virgin and annealed states of the thin films. Certain minor changes in the optical band gap values were explained by the change in the chemical composition and by the change in the sample disorder. Both ultraviolet and visible and far infrared spectra indicate that annealed Ge39.5Se60.5 thin films are practically insensitive to the illumination while Ge30.5Se69.5 thin films show a reversible photodarkening. The observed reversible changes of the optical band gap for Ge30.5Se69.5 thin films were also not dependent on the film thickness. The network structural rigidity, which can be combined with a quick relaxation of the light induced excitation directly back to the ground state, was suggested as the reason for the absence of reversible photodarkening in Ge39.5Se60.5 thin films.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Thin Solid Films

ISSN

0040-6090

e-ISSN

—

Volume of the periodical

619

Issue of the periodical within the volume

30 November

Country of publishing house

CH - SWITZERLAND

Number of pages

6

Pages from-to

336-341

UT code for WoS article

000389610900049

EID of the result in the Scopus database

2-s2.0-84998953935