GALLIUM ARSENIDE AND ALUMINUM GALLIUM ARSENIDE PHOTOCELL PROVIDED WITH OHMIC CONTACT GRID SEALED AGAINST ENVIRONMENT AND MANUFACTURE THEREOF

摘要

PURPOSE: To provide a photosensitive cell such as a solar battery which has a passivasion layer of such material as AlGaAs which is sensitive with respect to the environment, protected by being sealed with respect to the environment. CONSTITUTION: This photoreceptive cell has a photoreceptive layer structure 44 including a P-N junction, a passivation layer 52 of the material such as AlGaA which is formed on the layer structure 44 and sensitive with respect to the environment, a cap layer 60 of a material which is formed covering part of the passivation layer 52, being not sensitive to the environment, a antireflection coating 54 of an electric insulating material which is formed on the passivation layer 52 and being not sensitive to the environment, and an ohmic contact 64 which is formed on the cap layer 60. Then the cap layer 60 extends through the antireflection coating 54 for sealing the passivasion layer 52, together with the antireflection coating 54.