Synthesis, Structural and Optical Properties of Mo-Doped ZnO Thin Films

• Authors: A. Mekki , N. Tabet
• Languages of publication: EN

Abstracts

EN

Transparent zinc oxide thin films doped with molybdenum have been prepared using a DC reactive magnetron sputtering on glass substrates from metallic ZnMo target. The three films, called A, B, and C, had 1.9 at.% Mo, 2.8 at.% Mo and 4.7 at.% Mo, respectively. The composition of the films was determined by X-ray photoelectron spectroscopy. The analysis of Mo 3 d_{5/2} core level spectra indicated that Mo exist in the films in Mo^{6+} oxidation state irrespective of the Mo content in the film. The X-ray diffraction spectrum of film A showed a texture along the 002 orientation, while that of film B showed two peaks, one at θ ≈ 34.5° and the other at ≈ 36.5° corresponding to 002 and 101 orientations, respectively. Film C showed two small peaks corresponding to 100 and 110 orientations. Optical measurements showed that all three films had a transmittance of about 80%. The energy band gap showed a linear increase as Mo concentration increases from 3.29 eV to 3.38 eV. The atomic force microscopy image of film A showed a homogeneous morphology of the surface of the film, while the atomic force microscopy images of films B and C showed an inhomogeneous one.

Keywords

EN

81.15.Aa; 78.20.-e; 61.05.cp; 61.05.cj

Discipline

• 81.15.Aa: Theory and models of film growth
• 61.05.cj: X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.(for x-ray and EXAFS applications in biological physics, see 87.64.kd)
• 61.05.cp: X-ray diffraction
• 78.20.-e: Optical properties of bulk materials and thin films(for optical properties related to materials treatment, see 81.40.Tv; for optical materials, see 42.70-a; for optical properties of superconductors, see 74.25.Gz; for optical properties of rocks and minerals, see 91.60.Mk; for optical properties of specific thin films, see 78.66.-w)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 2
• Pages: 365-367

Dates

published

2014-02

Contributors

author

A. Mekki

• Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

author

N. Tabet

• Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

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Identifiers

DOI

10.12693/APhysPolA.125.365