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Chemical bath deposition and characterization of CdSe thin films for optoelectronic applications

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Abstract

Cadmium selenide (CdSe) thin films of high crystalline quality on glass substrate have been prepared by chemical bath deposition technique from an aqueous bath containing tetramine cadmium and sodium selenosulphate. Structural analysis using XRD shows that the film is single phase, crystallized in hexagonal structure with preferred growth in (111) direction. The energy band gap calculated from the absorption spectra of unannealed CdSe thin films shows an optical band gap of 1.8 eV and absorption coefficient near band edge (α)—0.58 × 105 cm−1. The conductivity of CdSe thin films is n-type.

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Acknowledgements

The authors are grateful to University Grants Commission, New Delhi for the financial assistance for this work. The authors would like to thank Mr. C. V. Muraleedharan and Ms. Leena Joseph of Bio Medical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences, Trivandrum for thickness measurement.

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Authors and Affiliations

  1. Department of Physics, V. T. M. N. S. S. College, Dhanuvachapuram, Trivandrum, Kerala, India

    N. Gopakumar

  2. Department of Physics, All Saint’s College, Trivandrum, Kerala, India

    P. S. Anjana

  3. Department of Physics, University College, Trivandrum, Kerala, India

    P. K. Vidyadharan Pillai

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  1. N. Gopakumar
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  2. P. S. Anjana
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  3. P. K. Vidyadharan Pillai
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Correspondence to N. Gopakumar.

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Gopakumar, N., Anjana, P.S. & Vidyadharan Pillai, P.K. Chemical bath deposition and characterization of CdSe thin films for optoelectronic applications. J Mater Sci 45, 6653–6656 (2010). https://doi.org/10.1007/s10853-010-4756-1

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  • DOI: https://doi.org/10.1007/s10853-010-4756-1

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