Effects of Polarized Light on Photocurrents and Photovoltages in ZnS

Abstract

The anomalous short circuit photocurrents in ZnS have been measured using polarized light. In spite of the fact that for a given wavelength, light polarized perpendicular to the $c$ axis is more strongly absorbed than light polarized parallel to the $c$ axis, there are wavelength regions in which the absolute magnitude of the short circuit photocurrents are smaller for perpendicularly polarized light. The data are consistent with a double valence band model.