Abstract:The anodic film formed in aqueous tungstate electrolyte at , to about 295 nm thickness, on -type GaAs at high faradaic efficiency, about 94%, has been examined by analytical transmission electron microscopy, using ultramicrotomed film sections, Rutherford backscattering spectroscopy, x-ray photoelectron spectroscopy, electron probe micro-analysis and scanning electron microscopy. The film is revealed to be amorphous and to comprise a uniform distribution of units of and across the main film thickness, with p… Show more
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