Tin dioxide nanostructured thin films obtained through polymeric precursor method

Tin dioxide nanostructured thin films obtained through polymeric precursor method

Authors

  • Marcelo Antônio Dal Santos Universidade Estadual de Ponta Grossa Departamento de Química
  • Eder Carlos Ferreira de Souza Universidade Estadual de Ponta Grossa Departamento de Química
  • André Vitor Chaves de Andrade Universidade Estadual de Ponta Grossa Departamento de Física
  • Christiane Philippini Ferreira Borges Universidade Estadual de Ponta Grossa Departamento de Química
  • Sandra Regina Masetto Antunes Universidade Estadual de Ponta Grossa Departamento de Química
  • Augusto Celso Antunes Universidade Estadual de Ponta Grossa Departamento de Química

DOI:

https://doi.org/10.5433/1679-0375.2012v33n2p243

Keywords:

Citrates, Pechini, SnO2, Deposition, Dip-Coating

Abstract

Tin dioxide (SnO2) nanostructured thin films with low proportion of defects and low roughness were produced through the systematic control of temperature and viscosity of the precursor solutions used for thin films deposition. These solutions were obtained through the citrate method and the films were deposited through the ‘dip-coating’ technique on glass substrate and after thermal treatment at 470ºC/4h, they were characterized both structurally and morphologically through the X-ray diffractometry, optic microscopy, scanning electronic microscopy, atomic force microscopy, X-ray fluorescence, UV-Vis absorption spectroscopy and X-ray excited photoelectrons spectroscopy. The film thickness was obtained through scanning electronic microscopy of the films cross-section and correlated to the proportion of Sn and Si obtained through X-ray fluorescence. X-ray diffractometry of the films revealed the presence of peaks corresponding to the SnO2 crystalline phase, overlapping a wide peak between 20 and 30º (2?), characteristic of the glass substrate. Optic microscopy, Scanning electronic microscopy and atomic force microscopy revealed homogeneous films, with low roughness, suitable to several applications such as sensors and transparent electrodes. It could be observed through the UV-Vis absorption analysis that the films presented high optical transparency and ‘band gap’ energy 4.36 eV. The X-ray excited photoelectron spectroscopy confirmed the presence of SnO2, as well as traces of the elements present in the glass substrate and residual carbon from the thermal treatment of the films.

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Author Biographies

Marcelo Antônio Dal Santos, Universidade Estadual de Ponta Grossa Departamento de Química

Mestre em Engenharia e Ciência dos Materiais pela Universidade Estadual de Ponta Grossa

Eder Carlos Ferreira de Souza, Universidade Estadual de Ponta Grossa Departamento de Química

Doutor em Química, Pesquisador, Departamento de Química, Universidade Estadual de Ponta Grossa

André Vitor Chaves de Andrade, Universidade Estadual de Ponta Grossa Departamento de Física

Docente do Departamento de Física da Universidade Estadual de Ponta Grossa

Christiane Philippini Ferreira Borges, Universidade Estadual de Ponta Grossa Departamento de Química

Docente do Departamento de Química da Universidade Estadual de Ponta Grossa

Sandra Regina Masetto Antunes, Universidade Estadual de Ponta Grossa Departamento de Química

Docente do Departamento de Química da Universidade Estadual de Ponta Grossa

Augusto Celso Antunes, Universidade Estadual de Ponta Grossa Departamento de Química

Docente do Departamento de Química da Universidade Estadual de Ponta Grossa

Published

2012-11-30

How to Cite

Dal Santos, M. A., Souza, E. C. F. de, Andrade, A. V. C. de, Borges, C. P. F., Antunes, S. R. M., & Antunes, A. C. (2012). Tin dioxide nanostructured thin films obtained through polymeric precursor method. Semina: Ciências Exatas E Tecnológicas, 33(2), 243–254. https://doi.org/10.5433/1679-0375.2012v33n2p243

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