Reversible structural changes of in situ prepared As40Se60 nanolayers studied by XPS spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405872" target="_blank" >RIV/00216208:11320/19:10405872 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fs7XWf~XdI" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fs7XWf~XdI</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s13204-018-0771-3" target="_blank" >10.1007/s13204-018-0771-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reversible structural changes of in situ prepared As40Se60 nanolayers studied by XPS spectroscopy

Popis výsledku v původním jazyce

As40Se60 nanolayers, as-deposited, annealed and in situ illuminated by green (532nm) laser light, were studied using synchrotron radiation photoelectron spectroscopy. Changes in composition and local atomic coordination occurring in the irradiated region of As40Se60 films were monitored by analysis of As 3d and Se 3d core levels. It was found that the thermal treatment causes a decrease of the concentration of homopolar (As-As and Se-Se) bonds. On the other hand, an increasing concentration of both As-rich and Se-rich structural units (s.u.) with homopolar As-As and Se-Se bonds was observed under in situ green laser illumination of As40Se60 nanolayers. This process appeared to be reversible for a few sequences of annealing and illuminating of the sample. After a few cycles storing at ambient conditions the As40Se60 film composition was gradually changing, i.e. the aging effect was detected due to a drastic loss of As under ambient conditions. The surface local structure of the As40Se60 nanolayers and their photoinduced transformation are discussed in detail.

Název v anglickém jazyce

Reversible structural changes of in situ prepared As40Se60 nanolayers studied by XPS spectroscopy

Popis výsledku anglicky

As40Se60 nanolayers, as-deposited, annealed and in situ illuminated by green (532nm) laser light, were studied using synchrotron radiation photoelectron spectroscopy. Changes in composition and local atomic coordination occurring in the irradiated region of As40Se60 films were monitored by analysis of As 3d and Se 3d core levels. It was found that the thermal treatment causes a decrease of the concentration of homopolar (As-As and Se-Se) bonds. On the other hand, an increasing concentration of both As-rich and Se-rich structural units (s.u.) with homopolar As-As and Se-Se bonds was observed under in situ green laser illumination of As40Se60 nanolayers. This process appeared to be reversible for a few sequences of annealing and illuminating of the sample. After a few cycles storing at ambient conditions the As40Se60 film composition was gradually changing, i.e. the aging effect was detected due to a drastic loss of As under ambient conditions. The surface local structure of the As40Se60 nanolayers and their photoinduced transformation are discussed in detail.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Applied Nanoscience

ISSN

2190-5509

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

SA - Království Saúdská Arábie

Počet stran výsledku

8

Strana od-do

917-924

Kód UT WoS článku

000477671900041

EID výsledku v databázi Scopus

2-s2.0-85069656322