Kinetics and Rutherford backscattering study of the photo-induced solid state chemical reaction between silver and amorphous As33S67 layers

Tomas Wagner; Miroslav Vlcek; Miloslav Frumar; Vratislav Perina; Eero Rauhala; Jaakko Saarilahti; Peter J.S. Ewen

doi:10.1117/12.246830

19 August 1996 Kinetics and Rutherford backscattering study of the photo-induced solid state chemical reaction between silver and amorphous As₃₃S₆₇ layers

Tomas Wagner, Miroslav Vlcek, Miloslav Frumar, Vratislav Perina, Eero Rauhala, Jaakko Saarilahti, Peter J.S. Ewen

Author Affiliations +

Proceedings Volume 2776, Developments in Optical Component Coatings; (1996) https://doi.org/10.1117/12.246830
Event: Optical Instrumentation and Systems Design, 1996, Glasgow, United Kingdom

Abstract

The kinetics of photo-induced solid state chemical reaction of silver with a As₃₃S₆₇ films in conventional sandwich structure was measured by monitoring the change in thickness of the undoped chalcogenide using a modified computer-controlled technique. The kinetic data obtained shows that there are two stages in the photo-induced reaction process. Rate coefficient and activation energies have been measured and a comparison of the composition and structure of reaction products detected by Rutherford backscattering spectroscopy (RBS) has been made. The RBS spectra obtained at different stages of the photo-induced reaction process show a step-like form of the Ag concentration profile during the course of the reaction and the homogeneous distribution of Ag in the final reaction products, e.g. 31 at percent Ag. The step-like form of the Ag concentration profile is discussed in the framework of the G-c_Ag diagram for the Ag-As₃₃S₆₇ system. On the basis of the RBS results, it is suggested model explaining the kinetics of the photo-induced reaction.

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Tomas Wagner, Miroslav Vlcek, Miloslav Frumar, Vratislav Perina, Eero Rauhala, Jaakko Saarilahti, and Peter J.S. Ewen "Kinetics and Rutherford backscattering study of the photo-induced solid state chemical reaction between silver and amorphous As₃₃S₆₇ layers", Proc. SPIE 2776, Developments in Optical Component Coatings, (19 August 1996); https://doi.org/10.1117/12.246830

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