Cadmium sulfide photovoltaic cell of improved efficiency
AssigneeChevron Research Company
InventorTerry M. Peterson
Life of this patent
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Abstract
Cadmium sulfide photovoltaic cells of improved efficiency comprising transparent metal conducting electrode layer, first cadmium semi-conductor layer, short-barrier layer, second cadmium sulfide semi-conductor layer, barrier layer and collecting metal electrode layer.
Claims8
A cadmium sulfide photovoltaic cell of improved efficiency comprising successive layers of a transparent conducting electrode layer, a first cadmium sulfide semi-conductor layer, a short-barrier layer comprising cadmium sulfide, said short-barrier layer containing a minor portion of a metal selected from the group consisting of titanium aluminum, chromium, vanadium, boron, magnesium, beryllium and scandium, a second cadmium sulfide semi-conductor layer, a barrier layer and a collecting metal electrode layer.
A process for preparing thin film polycrystalline photovoltaic cells of improved efficiency which comprises forming a first cadmium sulfide semiconductor layer on a transparent conducting electrode layer, forming a short-barrier layer comprising cadmium sulfide, said short-barrier layer containing a minor proportion of a metal selected from the group consisting of titanium aluminum, chromium, vanadium, boron, magnesium, beryllium and scandium on said first cadmium sulfide semi-conductor layer, forming a second cadmium sulfide semi-conductor layer on said short-barrier layer, forming a copper sulfide barrier layer on said second cadmium sulfide semi-conductor layer, and forming a copper collecting electrode layer on said copper sulfide barrier layer.
Dependencies are inferred from the claim text.