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Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis

Received: 26 May 2019     Accepted: 18 June 2019     Published: 27 June 2019
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Abstract

Thin films of ZnO, CZTS (Cu2ZnSnS4) and ZnO-CZTS were prepared by spray pyrolysis deposition (SPD). After spraying a precursor solution of ZnO directly onto fluorine-doped tin oxide (FTO) substrats, CZTS thin layers were sprayed onto layers of ZnO to forme a p-n junction. Some CZTS layers were directly spray onto fluorine-doped tin oxide substrats. ZnO is a wide band gap n-type material, consisting of abundant and nontoxic elements, and is thus expected to be a good substitute for CdS buffer layer in solar cells. In this paper, we report the study of CZTS and ZnO thin films synthesized by chemical spray pyrolysis (CSP) method. During the deposition of the ZnO thin films on the FTO substrats the number of sequences was varied from 20 to 40. The influence of the ZnO on the structural, optical, morphological and electrical properties of CZTS films was studied using various techniques. The X-ray diffraction studies showed the formation of kesterite (Cu2ZnSnS4) phases with the peaks corresponding to (112), (220) and (312) planes. SEM study revealed a lack of uniformity of the surface of the CZTS layers sprayed onto the ZnO layers for a lower thickness of ZnO (FTO-ZnO20-CZTS). The band gap values of FTO-CZTS and FTO-ZnO-CZTS thin films were measured and found in the range 2.2 - 2.25 eV which are in good agreement with the results reported (2-2.2 eV). The morphological studies revealed the formation of some clusters randomly distributed on the film surface in the ZnO-containing layers, i.e. the FTO-ZnO20-CZTS and Finally, current-voltage measurements for different PV cells with maximum efficiency were carried out. A conversion efficiency (η) of 5.99% with fill factor (FF) = 18.8%, open circuit voltage (Voc) = 0.54 V, short circuit current density (Jsc) = 59 mA.cm2 were recorded through the FTO-ZnO40-CZTS thin film PV cell.

Published in American Journal of Materials Synthesis and Processing (Volume 4, Issue 1)
DOI 10.11648/j.ajmsp.20190401.11
Page(s) 1-8
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Spray Pyrolysis Deposition, Thin Films, Cu2ZnSnS4, Zinc Oxide

References
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    Salif Cisse, Maria Covei, Jean Jude Domingo, Anca Duta. (2019). Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis. American Journal of Materials Synthesis and Processing, 4(1), 1-8. https://doi.org/10.11648/j.ajmsp.20190401.11

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    ACS Style

    Salif Cisse; Maria Covei; Jean Jude Domingo; Anca Duta. Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis. Am. J. Mater. Synth. Process. 2019, 4(1), 1-8. doi: 10.11648/j.ajmsp.20190401.11

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    AMA Style

    Salif Cisse, Maria Covei, Jean Jude Domingo, Anca Duta. Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis. Am J Mater Synth Process. 2019;4(1):1-8. doi: 10.11648/j.ajmsp.20190401.11

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  • @article{10.11648/j.ajmsp.20190401.11,
      author = {Salif Cisse and Maria Covei and Jean Jude Domingo and Anca Duta},
      title = {Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis},
      journal = {American Journal of Materials Synthesis and Processing},
      volume = {4},
      number = {1},
      pages = {1-8},
      doi = {10.11648/j.ajmsp.20190401.11},
      url = {https://doi.org/10.11648/j.ajmsp.20190401.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmsp.20190401.11},
      abstract = {Thin films of ZnO, CZTS (Cu2ZnSnS4) and ZnO-CZTS were prepared by spray pyrolysis deposition (SPD). After spraying a precursor solution of ZnO directly onto fluorine-doped tin oxide (FTO) substrats, CZTS thin layers were sprayed onto layers of ZnO to forme a p-n junction. Some CZTS layers were directly spray onto fluorine-doped tin oxide substrats. ZnO is a wide band gap n-type material, consisting of abundant and nontoxic elements, and is thus expected to be a good substitute for CdS buffer layer in solar cells. In this paper, we report the study of CZTS and ZnO thin films synthesized by chemical spray pyrolysis (CSP) method. During the deposition of the ZnO thin films on the FTO substrats the number of sequences was varied from 20 to 40. The influence of the ZnO on the structural, optical, morphological and electrical properties of CZTS films was studied using various techniques. The X-ray diffraction studies showed the formation of kesterite (Cu2ZnSnS4) phases with the peaks corresponding to (112), (220) and (312) planes. SEM study revealed a lack of uniformity of the surface of the CZTS layers sprayed onto the ZnO layers for a lower thickness of ZnO (FTO-ZnO20-CZTS). The band gap values of FTO-CZTS and FTO-ZnO-CZTS thin films were measured and found in the range 2.2 - 2.25 eV which are in good agreement with the results reported (2-2.2 eV). The morphological studies revealed the formation of some clusters randomly distributed on the film surface in the ZnO-containing layers, i.e. the FTO-ZnO20-CZTS and Finally, current-voltage measurements for different PV cells with maximum efficiency were carried out. A conversion efficiency (η) of 5.99% with fill factor (FF) = 18.8%, open circuit voltage (Voc) = 0.54 V, short circuit current density (Jsc) = 59 mA.cm2 were recorded through the FTO-ZnO40-CZTS thin film PV cell.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Thin-Film FTO-ZnO-CZTS Solar Cells Fully Deposited by Spray Pyrolysis
    AU  - Salif Cisse
    AU  - Maria Covei
    AU  - Jean Jude Domingo
    AU  - Anca Duta
    Y1  - 2019/06/27
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ajmsp.20190401.11
    DO  - 10.11648/j.ajmsp.20190401.11
    T2  - American Journal of Materials Synthesis and Processing
    JF  - American Journal of Materials Synthesis and Processing
    JO  - American Journal of Materials Synthesis and Processing
    SP  - 1
    EP  - 8
    PB  - Science Publishing Group
    SN  - 2575-1530
    UR  - https://doi.org/10.11648/j.ajmsp.20190401.11
    AB  - Thin films of ZnO, CZTS (Cu2ZnSnS4) and ZnO-CZTS were prepared by spray pyrolysis deposition (SPD). After spraying a precursor solution of ZnO directly onto fluorine-doped tin oxide (FTO) substrats, CZTS thin layers were sprayed onto layers of ZnO to forme a p-n junction. Some CZTS layers were directly spray onto fluorine-doped tin oxide substrats. ZnO is a wide band gap n-type material, consisting of abundant and nontoxic elements, and is thus expected to be a good substitute for CdS buffer layer in solar cells. In this paper, we report the study of CZTS and ZnO thin films synthesized by chemical spray pyrolysis (CSP) method. During the deposition of the ZnO thin films on the FTO substrats the number of sequences was varied from 20 to 40. The influence of the ZnO on the structural, optical, morphological and electrical properties of CZTS films was studied using various techniques. The X-ray diffraction studies showed the formation of kesterite (Cu2ZnSnS4) phases with the peaks corresponding to (112), (220) and (312) planes. SEM study revealed a lack of uniformity of the surface of the CZTS layers sprayed onto the ZnO layers for a lower thickness of ZnO (FTO-ZnO20-CZTS). The band gap values of FTO-CZTS and FTO-ZnO-CZTS thin films were measured and found in the range 2.2 - 2.25 eV which are in good agreement with the results reported (2-2.2 eV). The morphological studies revealed the formation of some clusters randomly distributed on the film surface in the ZnO-containing layers, i.e. the FTO-ZnO20-CZTS and Finally, current-voltage measurements for different PV cells with maximum efficiency were carried out. A conversion efficiency (η) of 5.99% with fill factor (FF) = 18.8%, open circuit voltage (Voc) = 0.54 V, short circuit current density (Jsc) = 59 mA.cm2 were recorded through the FTO-ZnO40-CZTS thin film PV cell.
    VL  - 4
    IS  - 1
    ER  - 

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Author Information
  • Department of Physics, Faculty of Science and Technology, University of Cheikh Anta DIOP, Dakar, Senegal

  • Department of Renewable Energy and Recycling Systems, Faculty of Materials Science and Engineering, R&D Institute of the Transilvania, University of Brasov, Brasov, Romania

  • Department of Physics, Faculty of Science and Technology, University of Cheikh Anta DIOP, Dakar, Senegal

  • Department of Renewable Energy and Recycling Systems, Faculty of Materials Science and Engineering, R&D Institute of the Transilvania, University of Brasov, Brasov, Romania

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