Engineering the nanocrystalline structure of TiO2 films by aerodynamically filtered cluster deposition

被引：79

作者：

Barborini, E

Kholmanov, IN

Piseri, P

Ducati, C

Bottani, CE

Milani, P

机构：

[1] Univ Milan, Dipartimento Fis, INFM, I-20133 Milan, Italy

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

[3] Politecn Milan, Dipartimento Ingn Nucl, INFM, I-20133 Milan, Italy

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 16期

关键词：

D O I：

10.1063/1.1510579

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have produced nanocrystalline titanium dioxide films with different structures (anatase or rutile) by depositing mass selected clusters from the gas phase. Nanoparticles are produced by a pulsed microplasma cluster source and are selected by aerodynamic separation effects. We have characterized nanocrystalline films by Raman spectromicroscopy and transmission electron microscopy, showing that the films assembled with very small clusters have a predominant rutile phase, whereas larger clusters form films with anatase structure. Our observations suggest that phonon confinement effects are responsible for a significant shift and broadening observed for the Raman peaks. (C) 2002 American Institute of Physics.

引用

页码：3052 / 3054

页数：3

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