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Development of nanostructured CdS sensor for H2S recognition: structural and physical characterization

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Abstract

In the present work, we report on the performance of a nanostructured CdS gas sensor. The sensor was fabricated using spin coating technique on glass substrate. The CdS sensor was characterized for their, structural microstructural as well as optoelectronic and H2S response was studied. The XRD analysis showed formation of nanocrystalline CdS. Morphological analysis using SEM revealed nanostructured morphology with average grain size in the range of 40–50nm. Optical investigations showed a high absorption coefficient (104 cm−1) with a direct band gap of 2.54 eV. Electrical transport studies revealed films shows n-type conduction mechanism with room temperature dc electrical conductivity 10−6 (Ω cm)−1. The CdS sensors showed the maximum response of 13.2% upon exposure to 100 ppm H2S at operating temperature 100 °C.

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Acknowledgments

The author (VBP) thankful to Department of Science and Technology, Government of India, New Delhi for sanctioning Fast Track Project (SR/FTP/PS-09/2007).

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Authors and Affiliations

  1. Materials Research Laboratory, School of Physical Sciences, Solapur University, Solapur, Maharashtra, 413255, India

    B. T. Raut, P. R. Godse, S. G. Pawar, M. A. Chougule & V. B. Patil

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  1. B. T. Raut
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  2. P. R. Godse
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  3. S. G. Pawar
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  4. M. A. Chougule
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  5. V. B. Patil
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Correspondence to V. B. Patil.

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Raut, B.T., Godse, P.R., Pawar, S.G. et al. Development of nanostructured CdS sensor for H2S recognition: structural and physical characterization. J Mater Sci: Mater Electron 23, 956–963 (2012). https://doi.org/10.1007/s10854-011-0527-2

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  • DOI: https://doi.org/10.1007/s10854-011-0527-2

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