ANALYSIS OF THE IMPEDANCE RESPONSE DUE TO SURFACE-STATES AT THE SEMICONDUCTOR SOLUTION INTERFACE/

Electronic surface states at semiconductor/solution interfaces can med iate processes such as trapping and detrapping of majority and minorit y charge carriers, recombination, or charge transfer to or from the so lution. We have calculated the complete impedance response due to thes e processes using a kinetic approach. Specific cases are discussed and diagnostic parameters for the capacitance and conductance are present ed. Experimental results on n-Si(111) in fluoride solutions are used t o illustrate the obtained expressions. (C) 1998 American Institute of Physics.