Photoelectrochemical Behavior of the GaAs/A1_xGa_l-xAs Superlattice Elect rode/Electrolyte Interface

Single and multiple quantum wells of lattice-matched superlattices material GaAs/A1_xGa_l-xAs have been studied as photoelectrodes in photoelectrochemical cells containing nonaqueous electrolyte. Structured photocurrent spectra in the potential range of -1.8 to 1.0 V (vs standard calomel electrode) were obtained. The quantum yields for both superlattice electrodes were estimated and compared.