Optical properties of as-deposited, annealed and laser-treated Ge2Sb2Te5 thin films
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F22%3A39919077" target="_blank" >RIV/00216275:25310/22:39919077 - isvavai.cz</a>
Result on the web
<a href="https://opg.optica.org/ome/fulltext.cfm?uri=ome-12-7-2927&id=477519" target="_blank" >https://opg.optica.org/ome/fulltext.cfm?uri=ome-12-7-2927&id=477519</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OME.462278" target="_blank" >10.1364/OME.462278</a>
Alternative languages
Result language
angličtina
Original language name
Optical properties of as-deposited, annealed and laser-treated Ge2Sb2Te5 thin films
Original language description
Knowledge of the correct optical properties of phase change materials (PCM) is important in the development of many devices. Here, we report on the differences in optical properties of as-deposited, annealed, laser-reamorphized and laser-recrystallized Ge2Sb2Te5 thin films. While as-deposited and laser-reamorphized Ge2Sb2Te5 show a similar spectral dependences of refractive indices and extinction coefficients with a small decrease in optical band gap from 0.63 to 0.59 eV, spectral dependences of annealed and laser-recrystallized Ge2Sb2Te5 differ significantly from each other in the entire measured spectral region with values of optical band gap 0.51 and 0.45 eV, respectively. We discuss the main differences in the optical functions between both crystalline phases using X-ray diffraction studies. We further present that the laser-reamorphized phase transforms to the crystalline phase at about 12 degrees C lower temperature in contrast to the as-deposited amorphous phase. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20506 - Coating and films
Result continuities
Project
<a href="/en/project/LM2018103" target="_blank" >LM2018103: Center of Materials and Nanotechnologies - Research Infrastructure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Optical Materials Express
ISSN
2159-3930
e-ISSN
2159-3930
Volume of the periodical
12
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
2927-2937
UT code for WoS article
000827158600011
EID of the result in the Scopus database
2-s2.0-85135057663