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Characterization of TiO2 and TiO2-HfO2 Transparent Thin Films for Microelectronics Applications

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3 Author(s)
Borkowska, A. ; Fac. of Microsyst. Electron. & Photonics, Wroclaw Univ. of Technol. ; Domaradzki, J. ; Kaczmarek, D.

Transparent oxide semiconductors (TOSs) based on TiO2-doped matrix have been recently studied for their possible microelectronics applications. In the present work, TiO2 and Hf-doped TiO2 thin films were prepared by low pressure hot target reactive magnetron sputtering (LP HTRS) and deposited onto monocrystalline (100) silicon substrate. After deposition thin films were additionally annealed in air for 4 hours at 1000 K. Properties of the thin films matrixes were studied by means of X-ray diffraction (XRD), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). XRD investigations have shown that heat treatment enhances the crystallity of the thin films. Well-shaped lines of the rutile phase for TiO2 and the orthorhombic HfTiO4 have appeared. AFM images showed that the nanocrystalline thin films exhibit the high ordering grade. The dimension and arrangement of grains were homogenous on the whole sample surface. The stoichiometry of manufactured thin films was confirmed by XPS examinations

Published in:

Photonics and Microsystems, 2006 International Students and Young Scientists Workshop

Date of Conference:

June 30 2006-July 2 2006

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