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Optical properties of transition metal (Mn, Fe and V) doped Zinc Oxide ceramics and thin films

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Abstract

Transition metal doped (Mn, Fe and V) ZnO ceramics and their thin films were prepared by pulsed laser deposition on glass substrates. The ceramic targets did not show any additional phase formation from XRD measurement, except for high Fe concentrations. Optical absorption showed sub-band gap absorption for Mn doping. The band gap was shifted by 0.06 eV for V doped ZnO as concentration was increased to 10%. Micro Raman spectra showed some defect induced modes for all the transition metals doped ZnO ceramics. In V doped ZnO ceramics there was two phonon induced resonance Raman scattering with increase in dopant concentrations. Raman spectra for thin films did not show any significant additional modes for Mn and Fe. However V doped ZnO thin films showed an additional mode for concentration ≥5 %.

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Acknowledgments

The authors acknowledge partial financial supports from DE-FG-02- 01ER45868 and NASA#NCC3-1034 and DAAD 19-03-1-0084 grants.

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Authors and Affiliations

  1. Department of Physics, University of Puerto Rico, San Juan, PR, 00931, USA

    Neha Awasthi, P. Bhattacharya & R.S. Katiyar

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  1. Neha Awasthi
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  2. P. Bhattacharya
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  3. R.S. Katiyar
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Awasthi, N., Bhattacharya, P. & Katiyar, R. Optical properties of transition metal (Mn, Fe and V) doped Zinc Oxide ceramics and thin films. MRS Online Proceedings Library 825, 27 (2004). https://doi.org/10.1557/PROC-825-G2.7

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  • DOI: https://doi.org/10.1557/PROC-825-G2.7

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