Pt-doped tungsten oxide surface: photoemission and RHEED study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F10%3A10070047" target="_blank" >RIV/00216208:11320/10:10070047 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Pt-doped tungsten oxide surface: photoemission and RHEED study

Popis výsledku v původním jazyce

In this paper, we report investigations of the structure and electronic properties of a well-defined Pt/tungsten oxide system prepared on W(110) single-crystal surface. The crystallographic structure and epitaxial orientation were determined by reflexionhigh-energy electron diffraction. The chemical state of the film was investigated by photoelectron spectroscopy induced by an X-ray source as well as by synchrotron radiation photoelectron spectroscopy. The ultrathin Pt layers were deposited on the surface of epitaxial tungsten oxide with (111) planes parallel to the W(110). The formation of three-dimensional Pt clusters with (111) epitaxial plane was observed. It is shown that the Pt deposit caused a partial reduction of the tungsten oxide layer. We found that it is an electronic effect in which the interaction of the Pt deposit with the tungsten oxide enables charge transfer from the W cation to the O anion leading to change of the chemical state.

Název v anglickém jazyce

Pt-doped tungsten oxide surface: photoemission and RHEED study

Popis výsledku anglicky

In this paper, we report investigations of the structure and electronic properties of a well-defined Pt/tungsten oxide system prepared on W(110) single-crystal surface. The crystallographic structure and epitaxial orientation were determined by reflexionhigh-energy electron diffraction. The chemical state of the film was investigated by photoelectron spectroscopy induced by an X-ray source as well as by synchrotron radiation photoelectron spectroscopy. The ultrathin Pt layers were deposited on the surface of epitaxial tungsten oxide with (111) planes parallel to the W(110). The formation of three-dimensional Pt clusters with (111) epitaxial plane was observed. It is shown that the Pt deposit caused a partial reduction of the tungsten oxide layer. We found that it is an electronic effect in which the interaction of the Pt deposit with the tungsten oxide enables charge transfer from the W cation to the O anion leading to change of the chemical state.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/LC06058" target="_blank" >LC06058: Centrum studia materiálů s využitím synchrotronového záření.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Surface and Interface Analysis

ISSN

0142-2421

e-ISSN

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Svazek periodika

42

Číslo periodika v rámci svazku

6-7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000281149700021

EID výsledku v databázi Scopus

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