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Structural and conductivity studies of Ge-S-AgI glasses

Structural and conductivity studies of Ge-S-AgI glasses B. Monchev 1 , T. Petkova 1 , P. Petkov 2 and I. Kanazirski 3. 1 Institute of Electrochemistry and Energy Systems, Bulgarian Academy of Sciences, Sofia, Bulgaria Corresponding author : boris_monchev@yahoo.com

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Structural and conductivity studies of Ge-S-AgI glasses

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  1. Structural and conductivity studies of Ge-S-AgI glasses B. Monchev1, T. Petkova1, P. Petkov2 and I. Kanazirski3 1 Institute of Electrochemistry and Energy Systems, Bulgarian Academy of Sciences, Sofia, Bulgaria Corresponding author: boris_monchev@yahoo.com 2 Laboratory of Thin Film Technology, University of Chemical Technology and Metallurgy-Sofia, Bulgaria 3 Department of Physic-chemistry, University of Chemical Technology and Metallurgy-Sofia, Bulgaria Motivation • The structure of the amorphous materials with compositions (GeSx)100-yAgIy with x= 1,2 ; 1,5 and y = 5, 10, 15, 20 mol.% has been studied by IR spectroscopy with respect to their application. • Interesting conductivity results in Ge-S-AgI non-crystalline materials has been detected. FTIR analysis XRD Structural units Conductivity Conclusions References [1] J. Heo, J. Mackenzie, J. Non-Cryst. Sol. 113 (1989) 246. [2] E. Kamitsos, J. Kapoustis, G. Chryssikos, A. Pradel, M. Ribes, J. Sol. State Chem. 112 (2) (1994) 255. [3] C. Julien, S. Barnier, M. Massot, N. Chbani, X. Cai, A.M. Loireau-Lozac’h, M. Guittard, Materials Science and Eingineering B 22 (1994) 191. [4] Q. Mei, J. Saienga, J. Schrooten, B. Meyer, S. Martin, J. Non-Cryst. Sol. 324 (2003) 264. [5] G. Lukovsky, F.Galeener, R. Keezer, R. Geils, H. Six, Phys. Rev. B 9 (1974) 1591. [6] A. Ibanez, E. Philippot, S. Benazeth, H. Dexpert, J. Non-Cryst. Sol. 127 (1991) 25. [7] A. Stetsun, I. Indutnyi, V. Kravets, J. Non-Cryst. Sol. 202 (1996), 113. [8] I. Kotsalas, C. Raptis, J. Optelect. Adv. Mater. 3 (3) (2001) 675. [9] Gmelin L. (1974–1979) In: Gmelin handbook of inorganic chemistry. Springer-Verlag. [10] R. Holomb, P. Johansson, V. Mitsa, I. Rosola, Philosophical Magazine 85 (25) (2005) 2947. • The basic structural units detected are GeS4/2 tetrahedra, S3-Ge-Ge-S3 formations and Ge-S-I linkages ! • Some vibrations on the spectra have been attributed to silver-iodine and silver-sulfur interactions in complex silver-chalcogenide fragments ! • Silver-based formations are most probable reason for the registered broad bands as revealed peaks fitting ! • Conductivity depends on the temperature and composition of the studied Ge-S-AgI materials ! Acknowledgment:The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement № 213389.

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