Electrochemical adsorption of metals on amorphous Se-Ge films

Singh, Bhanwar ; Chopra, K. L. (1981) Electrochemical adsorption of metals on amorphous Se-Ge films Journal of Applied Physics, 52 (1). pp. 428-433. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v52/i1/p428_s...

Related URL: http://dx.doi.org/10.1063/1.329801


Electrochemical adsorption of Ag and Cu on a-Se1-xGex films has been studied as a function of the composition of the films, angle of deposition (obliqueness), film thickness, pre-illumination of the films and temperature of the electrolytic solution. Metal adsorption is due to the oxidation of germanium atoms by the metal ions present in the electrolyte. Its enhancement with obliwueness (angle of deposition f the film) arises due to increased surface defect sites/dangling bonds associated with the Ge atoms. Adsoprtion decreases for pre-illuminated a-Se1-xGex films, presumably as a result of changes in the surface topography arising from structural rearrangements of the defect centers.

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