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

T. Wagner (Corresponding Author), V. Perina, M. Vleck, M. Fumar, E. Rauhala, Jaakko Saarilahti, P. Ewen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The kinetics of the photo-induced solid state chemical reaction of silver with a-As33S67 films in a 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 show that there are two stages in the photo-induced reaction process. Rate coefficients and activation energies have been measured and a comparison of the composition and structure of the 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 for the Ag concentration profile during the course of the reaction and indicate a homogeneous distribution of Ag in the final reaction products, the Ag concentration being 31 at.%. The step-like form of the Ag concentration profile is discussed in the framework of the G-CAg diagram for the Ag-As33S67 system. On the basis of the back scattering results a model is suggested which explains the kinetics of the photo-induced reaction.

Original languageEnglish
Pages (from-to)157-165
Number of pages9
JournalJournal of Non-Crystalline Solids
Volume212
Issue number2-3
DOIs
Publication statusPublished - 1 Jan 1997
MoE publication typeA1 Journal article-refereed

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Rutherford backscattering spectroscopy
Silver
Chemical reactions
chemical reactions
backscattering
silver
solid state
Reaction products
Kinetics
kinetics
reaction products
Sandwich structures
sandwich structures
profiles
Activation energy
Scattering
spectroscopy
Monitoring
diagrams
activation energy

Cite this

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abstract = "The kinetics of the photo-induced solid state chemical reaction of silver with a-As33S67 films in a 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 show that there are two stages in the photo-induced reaction process. Rate coefficients and activation energies have been measured and a comparison of the composition and structure of the 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 for the Ag concentration profile during the course of the reaction and indicate a homogeneous distribution of Ag in the final reaction products, the Ag concentration being 31 at.{\%}. The step-like form of the Ag concentration profile is discussed in the framework of the G-CAg diagram for the Ag-As33S67 system. On the basis of the back scattering results a model is suggested which explains the kinetics of the photo-induced reaction.",
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Rutherford backscattering and kinetics study of the photo-induced solid state chemical reaction between silver and amorphous As33S67 layers. / Wagner, T. (Corresponding Author); Perina, V.; Vleck, M.; Fumar, M.; Rauhala, E.; Saarilahti, Jaakko; Ewen, P.

In: Journal of Non-Crystalline Solids, Vol. 212, No. 2-3, 01.01.1997, p. 157-165.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Wagner, T.

AU - Perina, V.

AU - Vleck, M.

AU - Fumar, M.

AU - Rauhala, E.

AU - Saarilahti, Jaakko

AU - Ewen, P.

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AB - The kinetics of the photo-induced solid state chemical reaction of silver with a-As33S67 films in a 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 show that there are two stages in the photo-induced reaction process. Rate coefficients and activation energies have been measured and a comparison of the composition and structure of the 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 for the Ag concentration profile during the course of the reaction and indicate a homogeneous distribution of Ag in the final reaction products, the Ag concentration being 31 at.%. The step-like form of the Ag concentration profile is discussed in the framework of the G-CAg diagram for the Ag-As33S67 system. On the basis of the back scattering results a model is suggested which explains the kinetics of the photo-induced reaction.

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