Tunable Nanostructures and Crystal Structures in Titanium Oxide Films

被引：28

作者：

Srivastava, A. K. ^{[1
]}

Deepa, M. ^{[1
]}

Bhandari, S. ^{[1
]}

Fuess, H. ^{[2
]}

机构：

[1] Natl Phys Lab, Div Mat Characterizat, New Delhi 110012, India

[2] Tech Univ Darmstadt, D-64287 Darmstadt, Germany

来源：

NANOSCALE RESEARCH LETTERS | 2009年 / 4卷 / 01期

关键词：

Nanostructured TiO2; Phase transformations; Photoluminescence; Spectroscopy; TIO2; PHOTOLUMINESCENCE; RUTILE; TEMPERATURE; GROWTH;

D O I：

10.1007/s11671-008-9202-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Controllable nanostructures in spin coated titanium oxide (TiO2) films have been achieved by a very simple means, through change of post deposition annealing temperature. Electron beam imaging and reciprocal space analysis revealed as-deposited TiO2 films to be characterized by a dominant anatase phase which converts to the rutile form at 600 A degrees C and reverts to the anatase modification at 1,200 A degrees C. The phase changes are also accompanied by changes in the film microstructure: from regular nanoparticles (as-deposited) to nanowires (600 A degrees C) and finally to dendrite like shapes at 1,200 A degrees C. Photoluminescence studies, Raman spectral results, and X-ray diffraction data also furnish evidence in support of the observed solid state phase transformations in TiO2.

引用

页码：54 / 62

页数：9

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