Photoelectrochemical Corrosion of Semiconductors for Solar Cells

M. J. Madou; K. W. Frese Jr.; S. R. Morrison

doi:10.1117/12.970590

25 November 1980 Photoelectrochemical Corrosion of Semiconductors for Solar Cells

M. J. Madou, K. W. Frese Jr., S. R. Morrison

Proceedings Volume 0248, Role of Electro-Optics in Photovoltaic Energy Conversion; (1980) https://doi.org/10.1117/12.970590
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

Experimental results on stabilization against photo-induced corrosion of n-Si and n-GaAs in contact with electrolytes are given. Photocorrosion is examined on silicon using voltammetry on GaAs using a rotating ring-disk technique. The most extensive testing of stability was done for n-Si in a solution of N,N,N',N'-tetramethyl-p-phenvlenediamine in methanol and for n-GaAs in an aqueous solution of Fe(II) EDTA. Multiple waves were observed for the oxidation of several organic compounds on illuminated n-Si. To explain this auasi-metallic behavior a model based on an intervening thin surface oxide is postulated. In the case of n-GaAs the influence of mechanical surface damage, pH of the solution and redox couple used was studied. It is found that surface defects areativ enhance the susceptibility of the GaAs to photo-induced corrosion.

Citation Download Citation

M. J. Madou, K. W. Frese Jr., and S. R. Morrison "Photoelectrochemical Corrosion of Semiconductors for Solar Cells", Proc. SPIE 0248, Role of Electro-Optics in Photovoltaic Energy Conversion, (25 November 1980); https://doi.org/10.1117/12.970590

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