PHOTOVOLTAIC EFFECT IN A P-TYPE CUINSE2 GREEN LEAF HETEROJUNCTION

Photosensitive p-type CuInSe2/green leaf heterojunctions are fabricate d. The photocurrent polarization indicatrix, as well as the spectral d ependences of the quantum efficiencies for photoconversion and of the natural photopleochroism of the heterojunctions, are measured. The pol arization dependence of the photosensitivity suggests that the upper v alence band in CuInSe2 is of type Gamma(7). A window effect is observe d in the sensitivity ratio and these heterojunctions may find applicat ions as photoconverters for the intensity and polarization of light. ( C) 1997 American Institute of Physics.