Stationary and alternating photocurrents on n-InP electrodes

Abstract

Stationary and alternating dark and photocurrents have been investigated on n-InP in alkaline and acidic aqueous solutions. Due to the larger distance between the potential ranges of semiconductor photodissolution and of hydrogen evolution, a weaker interaction of both processes than on n-GaAs or GaP is expected, which favours the onset of strong inversion under illumination. New alternating photocurrent patterns beyond the stationary photocurrent onset are observed on n-InP and discussed qualitatively in terms of electronic non-equilibrium dynamics.