Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 93, Issue 1, Pages 194-201Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2005.03.045
Keywords
thin films; optical properties; semiconductivity
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Two inorganic tin compounds SnCl(4)(.)5H(2)O and SnCl(2)(.)2H(2)O were used to prepare highly oriented undoped tin oxide (SnO2) thin films. By spray pyrolysis, ethanolic solution of SnCl(4)(.)5H(2)O and SnCl(2)(.)2H(2)O led to the deposition of (2 0 0) and (110) oriented SnO, films, respectively. Microstructural parameters, electrical and optical properties of these films as a function of substrate temperature are reported. The films deposited at optimum deposition conditions have 170 nm thickness and exhibited a resistivity of 29.2 x 10(-6) Omega m along with refractive index 2.03 at 550 nm. The analytical expressions enabling the derivation of the optical constants of these films from their transmission spectrum only have successfully been applied. Finally, the refractive index dispersion is discussed in terms of the single-oscillator Wemple and Didomenico model. (c) 2005 Elsevier B.V. All rights reserved.
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