Gold clusters on WO3 nanoneedles grown via AACVD: XPS and TEM studies

被引：85

作者：

Navio, Cristina ^{[2
]}

Vallejos, Stella ^{[3
,4
]}

Stoycheva, Toni ^{[3
]}

Llobet, Eduard ^{[3
]}

Correig, Xavier ^{[3
]}

Snyders, Rony ^{[2
]}

Blackman, Christopher ^{[4
]}

Umek, Polona ^{[5
]}

Ke, Xiaoxing ^{[1
]}

Van Tendeloo, Gustaaf ^{[1
]}

Bittencourt, Carla ^{[1
]}

机构：

[1] Univ Antwerp, B-2020 Antwerp, Belgium

[2] Univ Mons, Lab Interact Chem Plasma Surfaces, B-7000 Mons, Belgium

[3] Univ Rovira & Virgili, MINOS, EMaS, Dept Elect Engn, Tarragona, Spain

[4] UCL, Dept Chem, London WC1H 0AJ, England

[5] Jozef Stefan Inst, Solid State Physcis Dept, Ljubljana 1000, Slovenia

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2012年 / 134卷 / 2-3期

关键词：

AACVD; Oxide nanostructures; Gas sensing; Gold clusters; CHEMICAL-VAPOR-DEPOSITION; NANOCOMPOSITE THIN-FILMS; OXIDE GAS SENSORS; SPUTTERING DEPOSITION; ELECTRONIC-STRUCTURE; TUNGSTEN TRIOXIDE; CARBON NANOTUBES; GRAIN-SIZE; CORE-LEVEL; METAL;

D O I：

10.1016/j.matchemphys.2012.03.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have prepared tungsten oxide films decorated with gold particles on Si substrates by aerosol assisted chemical vapor deposition (AACVD) and characterized them using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). SEM shows that the films are composed of needle-like structures and TEM shows that both the needles and the gold particles are crystalline. XPS indicates the presence of oxygen vacancies, i.e. the films are WO3-x, and hence the deposited material is composed of semiconducting nanostructures and that the interaction between the gold particles and the WO3 needles surface is weak. The synthesis of semiconducting tungsten oxide nanostructures decorated with metal particles represents an important step towards the development of sensing devices with optimal properties. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：809 / 813

页数：5

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