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The formation of a porous layer on the surface of gallium arsenide anode, n-GaAs, increases photogenerated currents significantly. This layer was formed as a result of an anodic polarization of illuminated n-GaAs in acidified chloride electrolytes. The formation of the porous layer was confirmed by scanning electron microscopy micrographs. The porous layer increases the reflectivity of GaAs to light,...
GaAs electrodes are coated electrochemically with thin films of Pt, Ni, Cu, Au, Cd and Pb. The thickness of metal film is estimated from the number of coulombs passes during its electrodeposition. The current-voltage curves of the metal/GaAs systems are registered under illumination in a three-electrode electrochemical cell. Metal additives to n-GaAs causes displacement in the direction of a negative...
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