Crystal Growth Kinetics of GeSe2 Polymorphs in Bulk Glasses and Thin Films: Role of Self-Diffusion and Viscosity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39923099" target="_blank" >RIV/00216275:25310/25:39923099 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acs.cgd.5c01063" target="_blank" >https://doi.org/10.1021/acs.cgd.5c01063</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.cgd.5c01063" target="_blank" >10.1021/acs.cgd.5c01063</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crystal Growth Kinetics of GeSe2 Polymorphs in Bulk Glasses and Thin Films: Role of Self-Diffusion and Viscosity

Popis výsledku v původním jazyce

The knowledge of transport properties (viscosity and self-diffusion) and the knowledge of crystal growth of different polymorphs in amorphous materials prepared in different forms provide important information for the preparation, processing, and utilization of these materials. This article is the first study of the direct observation of crystal growth rates in amorphous GeSe2 bulk samples and thin films. The study contains a detailed analysis of viscosity and crystal growth in amorphous GeSe2 samples (bulks and thin films), revealing also information about the self-diffusion process. Two polymorphs of GeSe2 crystals (low temperature-LT, and high temperature-HT) grew in GeSe2 bulk glasses. In the thermal evaporated film, only LT-GeSe2 was found. Nevertheless, the crystals in thin films grew far below the glass transition temperature. To properly analyze and describe the crystal growth kinetics, viscosity data were obtained using a thermomechanical analyzer and a nanoindentation system. A combination of crystal growth data and viscosities provides information about the size and transport speed (self-diffusion) of structural units incorporated into the GeSe2 crystals.

Název v anglickém jazyce

Crystal Growth Kinetics of GeSe2 Polymorphs in Bulk Glasses and Thin Films: Role of Self-Diffusion and Viscosity

Popis výsledku anglicky

The knowledge of transport properties (viscosity and self-diffusion) and the knowledge of crystal growth of different polymorphs in amorphous materials prepared in different forms provide important information for the preparation, processing, and utilization of these materials. This article is the first study of the direct observation of crystal growth rates in amorphous GeSe2 bulk samples and thin films. The study contains a detailed analysis of viscosity and crystal growth in amorphous GeSe2 samples (bulks and thin films), revealing also information about the self-diffusion process. Two polymorphs of GeSe2 crystals (low temperature-LT, and high temperature-HT) grew in GeSe2 bulk glasses. In the thermal evaporated film, only LT-GeSe2 was found. Nevertheless, the crystals in thin films grew far below the glass transition temperature. To properly analyze and describe the crystal growth kinetics, viscosity data were obtained using a thermomechanical analyzer and a nanoindentation system. A combination of crystal growth data and viscosities provides information about the size and transport speed (self-diffusion) of structural units incorporated into the GeSe2 crystals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

<a href="/cs/project/GA24-10480S" target="_blank" >GA24-10480S: Fyzikální vlastnosti a termické chování chalkogenidových tenkých vrstev připravených z roztoku a termickým napařováním: Levné materiály pro IČ optiku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Crystal Growth and Design

ISSN

1528-7483

e-ISSN

1528-7505

Svazek periodika

25

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

8232-8240

Kód UT WoS článku

001570899000001

EID výsledku v databázi Scopus

2-s2.0-105017558982