Composition, Structure and Electrical Resistivity of TiOx Thin Films Deposited by RF Magnetron Sputtering at Varied Substrate Temperatures

Article Preview

Abstract:

TiOx thin films were deposited by RF magnetron sputtering with TiOx (x<2) target at varied substrate temperatures. The composition and microstructure of the films was characterized by grazing incidence X-ray diffraction, scanning electron microscopy and Raman spectroscopy, which revealed that the films deposited at low temperatures were amorphous, and as the temperature increased up to 600 °C, the prepared films became crystalline and a TiO2 anatase phase was identified. Also the electrical resistivity of the as-prepared TiOx films was investigated as a function of the deposition temperature. The result indicates that with the raise of substrate temperature, the electrical resistivity of the deposited films decreased sharply.

You might also be interested in these eBooks

Info:

Periodical:

Key Engineering Materials (Volumes 602-603)

Pages:

1039-1042

Citation:

Online since:

March 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] C. Imawan, F. Solzbacher, TiOx-modified NiO thin films for H2 gas sensors: effects of TiOx-overlayer sputtering parameters. Sensor Actuat. B 68 (2000) 184-188.

DOI: 10.1016/s0925-4005(00)00427-5

Google Scholar

[2] L. Seon-Hong, Y. Eiji, Photocatalysis and surface doping states of N-doped TiOx films prepared by reactive sputtering with dry air. Appl. Catal. B 93 (2010) 217-226.

DOI: 10.1016/j.apcatb.2009.09.032

Google Scholar

[3] R.B. van Dover, Amorphous lanthanide-doped TiOx dielectric films. Appl. Phys. Lett. 74 (1999) 3041-3043.

DOI: 10.1063/1.124058

Google Scholar

[4] O. Banakh, P.E. Schmid, R. Sanjines, F. Levy, Electrical and optical properties of TiOx thin films deposited by reactive magnetron sputtering. Surf. Coat. Technol. 151 (2002) 272-275.

DOI: 10.1016/s0257-8972(01)01605-x

Google Scholar

[5] B.S. Jeong, D.P. Norton, J.D. Budai, Conductivity in transparent anatase TiO2 films epitaxially grown by reactive sputtering deposition. Solid State Electron. 47 (2003) 2275-2278.

DOI: 10.1016/s0038-1101(03)00210-7

Google Scholar

[6] M. Sreemany, A. Bose, S. Sen, A study on structural, optical, electrical and microstructural properties of thin TiOx films upon thermal oxidation: Effect of substrate temperature and oxidation temperature. Physica B 405 (2010) 85-93.

DOI: 10.1016/j.physb.2009.08.031

Google Scholar

[7] J. Joa, H. Choi, S. Kang, resistivity increase in TiOx induced by annealing and voltage application. Thin Solid Films 516 (2008) 8693-8696.

DOI: 10.1016/j.tsf.2008.05.008

Google Scholar

[8] H. K Yao, H.D. Shao, H.B. He, Z.X. Fan, Optical and electrical properties of TiOx thin films deposited by electron beam evaporation. Vacuum 81 (2007) 1023-1028.

DOI: 10.1016/j.vacuum.2006.11.002

Google Scholar

[9] W.X. Xu, S. Zhu, X.C. Fu, Q. Chen, The structure of TiOx thin film studied by Raman spectroscopy and XRD. Appl. Surf. Sci. 148 (1999) 253-262.

DOI: 10.1016/s0169-4332(98)00589-3

Google Scholar

[10] M.J. Lee, S. Han, S.H. Jeon, et al, Electrical manipulation of nanofilaments in transition-metal oxides for resistivity-based memory. Nano Lett. 9 (2009) 1476-1481.

Google Scholar

[11] S. Seo, M.J. Lee, D.H. Seo, et al, Conductivity switching characteristics and reset currents in NiO films, Appl. Phys. Lett. 86 (2005) 093509.

DOI: 10.1063/1.1872217

Google Scholar