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cFaculty of Physics, “Al. I. Cuza” University, 11A, Carol I Bd., 700506 Iasi, Romania

A. LORINCZI1,* , F. SAVA1, A. TOMESCU1, C. SIMION1, G. SOCOL2, I. N. MIHAILESCU2, M. POPESCU1

Affiliation

  1. National Institute R&D of Materials Physics, 077125-Bucharest-Magurele, P. O. Box. MG. 7, Romania
  2. National Institute R&D of Lasers, Plasma and Radiation Physics, 077125-Bucharest-Magurele, P. O. Box MG. 6, Romania

Abstract

Multilayers made of alternative layers of composition SnSe2 and tellurium (three pairs) have been prepared by pulsed laser deposition (PLD). The complex films have been investigated by X-ray diffraction. After a special annealing in oxygen fluence at various temperatures, up to 620 °C, the films were investigated both by X-ray diffraction and for gas sensing. Gas sensing properties were tested for water vapours, carbon monoxide (CO) and methane (CH4). After annealing at high temperature, the structure of the multilayer samples show oxide phases like TeO2, SnO2 and a mixed oxide ternary phase SnTe3O8. The annealed multilayers show good sensing properties to water vapours and CO gas..

Keywords

Multilayers, Chalcogenides, X-ray diffraction, Gas sensing properties.

Submitted at: Aug. 1, 2007
Accepted at: Nov. 16, 2007

Citation

A. LORINCZI, F. SAVA, A. TOMESCU, C. SIMION, G. SOCOL, I. N. MIHAILESCU, M. POPESCU, cFaculty of Physics, “Al. I. Cuza” University, 11A, Carol I Bd., 700506 Iasi, Romania, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 11, pp. 3489-3492 (2007)