Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS<sub>2</sub> Thin Films

Mazabalo Baneto; Damgou Mani Kongnine; Krishnasamy Ravichandran; Donafolgo Soro; Koffi Sagna; Kossi Napo

doi:doi:10.11648/j.am.20180704.13

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Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS₂ Thin Films

Mazabalo Baneto, Damgou Mani Kongnine, Krishnasamy Ravichandran, Donafolgo Soro, Koffi Sagna, Kossi Napo

Published in Advances in Materials (Volume 7, Issue 4)

Received: 25 October 2018 Accepted: 10 November 2018 Published: 18 December 2018

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Abstract

CuInS₂ thin films were deposited by chemical spray pyrolysis from aqueous solutions containing CuCl₂, InCl_. and thiourea at substrate temperature of 300°C and annealed at 500°C in air. [Cu]/[In] molar ratio was varied from 0.8 to 1.4 in precursor solution. The influence of [Cu]/[In] molar ratio on structural, morphological and optical properties of CuInS₂ thin films was investigated. X-ray diffraction analysis shows that all the films have chalcopyrite structure with the preferential orientation along (112) plane. CuInS₂ films with indium excess have poor crystallinity and consist of large quantity of small particles while copper-rich films exhibit good crystallinity with large grains. The best film crystallinity is obtained for [Cu]/[In] = 1.2. The scanning electron microscopy and atomic force microscopy images indicated that [Cu]/[In] molar ratio has a strong influence on the microstructure and surface morphology of the films. It was observed that films obtained with [Cu]/[In] ratio of 0.8 are porous. But films surface became gradually dense with increase in [Cu]/[In] molar ratio. As consequence films roughness decreased from 236.12 nm to 110.30 nm. Optical analysis shows that all the films have good absorbance in the visible. The optical absorbance of films is found to increase with increase in [Cu]/[In] molar ratio.

Published in	Advances in Materials (Volume 7, Issue 4)
DOI	10.11648/j.am.20180704.13
Page(s)	111-117
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), 2018. Published by Science Publishing Group

Keywords

Thin Film, CuInS2, Molar Ratio, Spray Pyrolysis

References

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APA Style

Mazabalo Baneto, Damgou Mani Kongnine, Krishnasamy Ravichandran, Donafolgo Soro, Koffi Sagna, et al. (2018). Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films. Advances in Materials, 7(4), 111-117. https://doi.org/10.11648/j.am.20180704.13

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ACS Style

Mazabalo Baneto; Damgou Mani Kongnine; Krishnasamy Ravichandran; Donafolgo Soro; Koffi Sagna, et al. Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films. Adv. Mater. 2018, 7(4), 111-117. doi: 10.11648/j.am.20180704.13

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AMA Style

Mazabalo Baneto, Damgou Mani Kongnine, Krishnasamy Ravichandran, Donafolgo Soro, Koffi Sagna, et al. Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films. Adv Mater. 2018;7(4):111-117. doi: 10.11648/j.am.20180704.13

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@article{10.11648/j.am.20180704.13,
  author = {Mazabalo Baneto and Damgou Mani Kongnine and Krishnasamy Ravichandran and Donafolgo Soro and Koffi Sagna and Kossi Napo},
  title = {Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films},
  journal = {Advances in Materials},
  volume = {7},
  number = {4},
  pages = {111-117},
  doi = {10.11648/j.am.20180704.13},
  url = {https://doi.org/10.11648/j.am.20180704.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20180704.13},
  abstract = {CuInS2 thin films were deposited by chemical spray pyrolysis from aqueous solutions containing CuCl2, InCl. and thiourea at substrate temperature of 300°C and annealed at 500°C in air. [Cu]/[In] molar ratio was varied from 0.8 to 1.4 in precursor solution. The influence of [Cu]/[In] molar ratio on structural, morphological and optical properties of CuInS2 thin films was investigated. X-ray diffraction analysis shows that all the films have chalcopyrite structure with the preferential orientation along (112) plane. CuInS2 films with indium excess have poor crystallinity and consist of large quantity of small particles while copper-rich films exhibit good crystallinity with large grains. The best film crystallinity is obtained for [Cu]/[In] = 1.2. The scanning electron microscopy and atomic force microscopy images indicated that [Cu]/[In] molar ratio has a strong influence on the microstructure and surface morphology of the films. It was observed that films obtained with [Cu]/[In] ratio of 0.8 are porous. But films surface became gradually dense with increase in [Cu]/[In] molar ratio. As consequence films roughness decreased from 236.12 nm to 110.30 nm. Optical analysis shows that all the films have good absorbance in the visible. The optical absorbance of films is found to increase with increase in [Cu]/[In] molar ratio.},
 year = {2018}
}

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TY  - JOUR
T1  - Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films
AU  - Mazabalo Baneto
AU  - Damgou Mani Kongnine
AU  - Krishnasamy Ravichandran
AU  - Donafolgo Soro
AU  - Koffi Sagna
AU  - Kossi Napo
Y1  - 2018/12/18
PY  - 2018
N1  - https://doi.org/10.11648/j.am.20180704.13
DO  - 10.11648/j.am.20180704.13
T2  - Advances in Materials
JF  - Advances in Materials
JO  - Advances in Materials
SP  - 111
EP  - 117
PB  - Science Publishing Group
SN  - 2327-252X
UR  - https://doi.org/10.11648/j.am.20180704.13
AB  - CuInS2 thin films were deposited by chemical spray pyrolysis from aqueous solutions containing CuCl2, InCl. and thiourea at substrate temperature of 300°C and annealed at 500°C in air. [Cu]/[In] molar ratio was varied from 0.8 to 1.4 in precursor solution. The influence of [Cu]/[In] molar ratio on structural, morphological and optical properties of CuInS2 thin films was investigated. X-ray diffraction analysis shows that all the films have chalcopyrite structure with the preferential orientation along (112) plane. CuInS2 films with indium excess have poor crystallinity and consist of large quantity of small particles while copper-rich films exhibit good crystallinity with large grains. The best film crystallinity is obtained for [Cu]/[In] = 1.2. The scanning electron microscopy and atomic force microscopy images indicated that [Cu]/[In] molar ratio has a strong influence on the microstructure and surface morphology of the films. It was observed that films obtained with [Cu]/[In] ratio of 0.8 are porous. But films surface became gradually dense with increase in [Cu]/[In] molar ratio. As consequence films roughness decreased from 236.12 nm to 110.30 nm. Optical analysis shows that all the films have good absorbance in the visible. The optical absorbance of films is found to increase with increase in [Cu]/[In] molar ratio.
VL  - 7
IS  - 4
ER  -

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Author Information

Mazabalo Baneto

Department of Physics, University of Lomé, Lomé, Togo
Damgou Mani Kongnine

Department of Physics, University of Lomé, Lomé, Togo
Krishnasamy Ravichandran

Post Graduate and Research Department of Physics, AVVM Sri Pushpam College (Autonomous), Thanjavur, India
Donafolgo Soro

Department of Sciences and Technology, High Normal School of Abidjan, Abidjan, Ivory Coast
Koffi Sagna

Department of Physics, University of Lomé, Lomé, Togo
Kossi Napo

Department of Physics, University of Lomé, Lomé, Togo

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APA Style

Mazabalo Baneto, Damgou Mani Kongnine, Krishnasamy Ravichandran, Donafolgo Soro, Koffi Sagna, et al. (2018). Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films. Advances in Materials, 7(4), 111-117. https://doi.org/10.11648/j.am.20180704.13

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ACS Style

Mazabalo Baneto; Damgou Mani Kongnine; Krishnasamy Ravichandran; Donafolgo Soro; Koffi Sagna, et al. Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films. Adv. Mater. 2018, 7(4), 111-117. doi: 10.11648/j.am.20180704.13

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AMA Style

Mazabalo Baneto, Damgou Mani Kongnine, Krishnasamy Ravichandran, Donafolgo Soro, Koffi Sagna, et al. Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films. Adv Mater. 2018;7(4):111-117. doi: 10.11648/j.am.20180704.13

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@article{10.11648/j.am.20180704.13,
  author = {Mazabalo Baneto and Damgou Mani Kongnine and Krishnasamy Ravichandran and Donafolgo Soro and Koffi Sagna and Kossi Napo},
  title = {Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films},
  journal = {Advances in Materials},
  volume = {7},
  number = {4},
  pages = {111-117},
  doi = {10.11648/j.am.20180704.13},
  url = {https://doi.org/10.11648/j.am.20180704.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20180704.13},
  abstract = {CuInS2 thin films were deposited by chemical spray pyrolysis from aqueous solutions containing CuCl2, InCl. and thiourea at substrate temperature of 300°C and annealed at 500°C in air. [Cu]/[In] molar ratio was varied from 0.8 to 1.4 in precursor solution. The influence of [Cu]/[In] molar ratio on structural, morphological and optical properties of CuInS2 thin films was investigated. X-ray diffraction analysis shows that all the films have chalcopyrite structure with the preferential orientation along (112) plane. CuInS2 films with indium excess have poor crystallinity and consist of large quantity of small particles while copper-rich films exhibit good crystallinity with large grains. The best film crystallinity is obtained for [Cu]/[In] = 1.2. The scanning electron microscopy and atomic force microscopy images indicated that [Cu]/[In] molar ratio has a strong influence on the microstructure and surface morphology of the films. It was observed that films obtained with [Cu]/[In] ratio of 0.8 are porous. But films surface became gradually dense with increase in [Cu]/[In] molar ratio. As consequence films roughness decreased from 236.12 nm to 110.30 nm. Optical analysis shows that all the films have good absorbance in the visible. The optical absorbance of films is found to increase with increase in [Cu]/[In] molar ratio.},
 year = {2018}
}

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TY  - JOUR
T1  - Role of [Cu]/[In] Molar Ratio in Controlling Structural, Morphological and Optical Properties of Sprayed CuInS2 Thin Films
AU  - Mazabalo Baneto
AU  - Damgou Mani Kongnine
AU  - Krishnasamy Ravichandran
AU  - Donafolgo Soro
AU  - Koffi Sagna
AU  - Kossi Napo
Y1  - 2018/12/18
PY  - 2018
N1  - https://doi.org/10.11648/j.am.20180704.13
DO  - 10.11648/j.am.20180704.13
T2  - Advances in Materials
JF  - Advances in Materials
JO  - Advances in Materials
SP  - 111
EP  - 117
PB  - Science Publishing Group
SN  - 2327-252X
UR  - https://doi.org/10.11648/j.am.20180704.13
AB  - CuInS2 thin films were deposited by chemical spray pyrolysis from aqueous solutions containing CuCl2, InCl. and thiourea at substrate temperature of 300°C and annealed at 500°C in air. [Cu]/[In] molar ratio was varied from 0.8 to 1.4 in precursor solution. The influence of [Cu]/[In] molar ratio on structural, morphological and optical properties of CuInS2 thin films was investigated. X-ray diffraction analysis shows that all the films have chalcopyrite structure with the preferential orientation along (112) plane. CuInS2 films with indium excess have poor crystallinity and consist of large quantity of small particles while copper-rich films exhibit good crystallinity with large grains. The best film crystallinity is obtained for [Cu]/[In] = 1.2. The scanning electron microscopy and atomic force microscopy images indicated that [Cu]/[In] molar ratio has a strong influence on the microstructure and surface morphology of the films. It was observed that films obtained with [Cu]/[In] ratio of 0.8 are porous. But films surface became gradually dense with increase in [Cu]/[In] molar ratio. As consequence films roughness decreased from 236.12 nm to 110.30 nm. Optical analysis shows that all the films have good absorbance in the visible. The optical absorbance of films is found to increase with increase in [Cu]/[In] molar ratio.
VL  - 7
IS  - 4
ER  -

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