Issue 21, 2013

Facile synthesis of carbon doped TiO2 nanowires without an external carbon source and their opto-electronic properties

Abstract

The present study demonstrates a simple protocol for the preparation of one dimensional (1D) oxidized titanium carbide nanowires and their opto-electronic properties. The oxidized titanium carbide nanowires (Ox-TiC-NW) are prepared from TiC nanowires (TiC-NW) that are in turn synthesized from micron sized TiC particles using the solvothermal technique. The Ox-TiC-NW is characterized by X-ray diffraction, UV-Vis spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Raman spectroscopy. Thermal oxidation of TiC-NW yields carbon doped TiO2-NW (C-TiO2-NW), a simple methodology to obtain 1D C-TiO2-NW. Temperature dependent Raman spectra reveal characteristic bands for TiO2-NW. Electrical characterization of individual C-TiO2-NW is performed by fabricating a device structure using the focused ion beam deposition technique. The opto-electronic properties of individual C-TiO2-NW demonstrate visible light activity and the parameters obtained from photoconductivity measurements reveal very good sensitivity. This methodology opens up the possibility of using C-TiO2-NW in electronic and opto-electronic device applications.

Graphical abstract: Facile synthesis of carbon doped TiO2 nanowires without an external carbon source and their opto-electronic properties

Supplementary files

Article information

Article type
Paper
Submitted
27 Jun 2013
Accepted
23 Aug 2013
First published
29 Aug 2013

Nanoscale, 2013,5, 10646-10652

Facile synthesis of carbon doped TiO2 nanowires without an external carbon source and their opto-electronic properties

V. Kiran and S. Sampath, Nanoscale, 2013, 5, 10646 DOI: 10.1039/C3NR03309K

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