• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology

Article

Rapid Synthesis of SnO2 Thin Films using Monoethanolamine through Wet Chemical Route
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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v14i19.462

Year: 2021, Volume: 14, Issue: 19, Pages: 1565-1573

Original Article

Rapid Synthesis of SnO2 Thin Films using Monoethanolamine through Wet Chemical Route

K V Murali1*, Thekkumthala Leelavathy Remadevi2

1Department of Physics, Nehru Arts and Science College, Kanhangad, 671314, Kerala, India.
Tel.: +91-9446061626
2Department of Physics, Pazhassi Raja N.S.S. College, Mattannur, 670702, Kerala, India

*Corresponding Author
Tel: +91-9446061626
Email: [email protected]

Received Date:08 April 2021, Accepted Date:11 May 2021, Published Date:29 May 2021

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: To develop a unique wet chemical process for the rapid synthesis of SnO2 thin films and hence to study the structural, morphological, optical and electrical properties of the films. Methods/Analysis: Polycrystalline SnO2 thin films having a thickness in the range of 800-1000 nm with crystallite size less than 5 nm were synthesized within a time of 20 minutes and without the need of post-annealing using SILAR technique. Lattice parameters, c/a ratio, cell volume, dislocation density, refractive index, extinction coefficient and porosity of the SnO2 thin films were determined. Findings: Films have a coarse and porous surface morphology with very fine pores distributed nearly uniformly on the film surface. The crystallite size and strain developed in the SnO2 films were computed by the Williamson-Hall technique. Microstrain developed in the films is of the order of 10-3. SnO2 films exhibit nearly 70% transmittance in the visible region. The optical band gap of the SnO2 films is 3.65 eV. The refractive index of the films varies from 2.05 to 2.30 in the 450-1900 nm wavelength range. SnO2 films exhibit a resistivity in the order of 10-1 Ωcm. Novelty: Reports a unique rapid wet chemical process for the direct preparation of crystalline SnO2 thin films using monoethaolamine at a temperature of 800C. Literature survey reveals that no other method has yielded such type of good quality SnO2 thin films at this temperature and without post annealing or sintering. First time crystalline SnO2 films were prepared by a wet chemical process within 20 minutes.

Keywords: SnO2 films; SILAR; Monoethanolamine; Strain; Optical band gap

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Copyright

© 2021 Murali & Remadevi. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)

  • 29 May 2021

Year: 2021, Volume: 14, Issue: 19

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