Eur. Phys. J. AP
Volume 9, Number 3, March 2000
|Page(s)||187 - 193|
|Published online||15 March 2000|
Structural, optical and thermal properties of β-SnS2 thin films prepared by the spray pyrolysis
Laboratoire de Physique de la Matière Condensée, Faculté des Sciences de Tunis,
Campus Universitaire, 2092 Tunis, Tunisia
2 Équipe de photothermique de Nabeul, Institut Préparatoire aux Études d'Ingénieur de Nabeul, B.P. 62, Merazka 8000 Nabeul, Tunisia
3 Laboratoire de Chimie Analytique, Faculté des Sciences de Tunis, Campus Universitaire, 2092 Tunis, Tunisia
Revised: 20 December 1999
Accepted: 28 December 1999
Published online: 15 March 2000
Tin disulfide β-SnS2 thin films have been prepared on pyrex substrates by the spray pyrolysis technique using tin tetrachloride and thiourea as starting materials. The depositions were carried out in the range of substrate temperatures from 240 to 400 °C. Highly c-axis oriented β-SnS2 films, having a strong (001) X-ray diffraction line are obtained at temperature 280 °C and using concentration ratio in solution . Films surfaces were analyzed by contact Atomic Force Microscopy (AFM) and by Scanning Electron Microscopy (SEM) in order to understand the effect of the deposited temperature on the surface structure. On the other hand, from transmission and reflection spectra, the band gap energy determined is about 2.71 eV. Finally using the photodeflection spectroscopy technique, the thermal conductivity Kc and diffusivity Dc were obtained. Their values are 10 Wm−1K−1 and 10−5 m2s−1 respectively.
PACS: 81.15.Rs – Spray coating techniques / 61.10.-i – X-ray diffraction and scattering / 65.90.+i – Other topics in thermal properties of condensed matter dynamics
© EDP Sciences, 2000
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