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A STUDY OF THIN AMORPHOUS (Ag)-Sb-S FILMS PREPARED BY THERMAL EVAPORATION COMBINED WITH OPTICALLY INDUCED DIFFUSION AND DISSOLUTION OF SILVER

J. Gutwirth1, T. Wágner1,* , S. O. Kasap2, M. Frumar1

Affiliation

  1. University of Pardubice, Department of General and Inorganic Chemistry and Research Centre LC532, Legion’s sq. 565, 53210 Pardubice, Czech Republic
  2. University of Saskatchewan, Department of Electrical Engineering, Campus Dr. 57, Saskatoon S7N 5A9, Canada

Abstract

There were prepared thin amorphous films of ternary system Ag-Sb-S as potential candidate for a new phase-change memory recording layer. In the first step, there were prepared two host Sb-S films on glass substrate by thermal evaporation using two different rates. Silver films were “step-by-step” consecutively evaporated on top of the Sb-S host films. Each evaporation step was followed by illumination. This process (Optically Induced Diffusion and Dissolution of Ag) produces two set of samples with different Ag dissolution limit. All (Ag)-Sb-S thin films are homogeneous amorphous and with good optical quality. Prepared films were characterized by SEM-EDX analysis, MDSC analysis, UV-VIS-NIR and Raman spectroscopy. Amorphous character was checked by SEM and by XRD. Influence of preparation conditions or silver content on physico-chemical properties (composition, optical and thermal properties, maximum silver content) is discussed..

Keywords

Chalcogenide glasses, (Ag)-Sb-S, MDSC.

Submitted at: May 19, 2005
Accepted at: July 21, 2005

Citation

J. Gutwirth, T. Wágner, S. O. Kasap, M. Frumar, A STUDY OF THIN AMORPHOUS (Ag)-Sb-S FILMS PREPARED BY THERMAL EVAPORATION COMBINED WITH OPTICALLY INDUCED DIFFUSION AND DISSOLUTION OF SILVER, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 4, pp. 1813-1821 (2005)