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Photovoltaic properties of nanocrystalline CdS films deposited by SILAR and CBD techniques—a comparative study

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Abstract

CdS films were fabricated using Successive Ionic Layer Adsorption and Reaction (SILAR) technique from starting solutions having S:Cd ratio 1:1, 3:1, 5:1 and 7:1 and their structural, surface morphological and optical properties were investigated and compared with that of their chemical bath deposited counterparts. The X-ray diffraction profiles showed that the films have cubic crystal structure with preferential orientation along the (111) plane and the intensity of the (111) plane increases for both the techniques as the S:Cd ratio increases. The energy dispersive X-ray analysis revealed that for SILAR deposited films, the S/Cd ratio in the sample increases from 0.8308 (for S:Cd 1:1) to 1.04 (for S:Cd 7:1) as the molar concentration of sulphur in the starting solution increases. But for CBD films, the S/Cd is only ~0.80 for all concentrations of sulphur in the starting solution. The optical band gap increases with the increase in S:Cd ratio in the starting solution in both the techniques.

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Acknowledgments

The authors are grateful to Dr. K. Porchezhian, Department of Physics, Pondicherry University, Puducherry- 605014 for his excellent encouragement and support. One of the authors, K.Ravichandran, gratefully acknowledges the financial support from the Tamil Nadu State Council for Science and Technology (TNSCST/S&T projects/PS/AR/2009-2010).

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Authors and Affiliations

  1. Department of Physics, Kunthavai Naachiyaar Government College for Women (Autonomous), Thanjavur, Tamil Nadu, 613 007, India

    V. Senthamilselvi

  2. Post Graduate and Research Department of Physics, AVVM Sri Pushpam College (Autonomous), Poondi, Thanjavur, Tamil Nadu, 613 503, India

    V. Senthamilselvi, K. Saravanakumar, R. Anandhi, B. Sakthivel & K. Ravichandran

  3. Department of Physics, J.J College of Arts and Science, Pudukkottai, Tamil Nadu, India

    N. Jabena Begum

  4. Department of Physics, National College (Autonomous), Tiruchirappalli, Tamil Nadu, 620 001, India

    A. T. Ravichandran

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  1. V. Senthamilselvi
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  2. K. Saravanakumar
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  3. N. Jabena Begum
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  4. R. Anandhi
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  5. A. T. Ravichandran
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  6. B. Sakthivel
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  7. K. Ravichandran
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Correspondence to V. Senthamilselvi.

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Senthamilselvi, V., Saravanakumar, K., Jabena Begum, N. et al. Photovoltaic properties of nanocrystalline CdS films deposited by SILAR and CBD techniques—a comparative study. J Mater Sci: Mater Electron 23, 302–308 (2012). https://doi.org/10.1007/s10854-011-0409-7

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  • DOI: https://doi.org/10.1007/s10854-011-0409-7

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