NOVELTY - An organic inverted solar photovoltaic cell has substrate (5) having face (a) and face (b), patterned indium-tin oxide (ITO) layer disposed on face (a) of substrate, patterned interfacial buffer layer (40) of cesium carbonate disposed on the ITO layer, active layer (30) of poly-3(hexylthiophene) and methyl(6,6)-phenyl-C61-butyrate disposed on the layer of cesium carbonate, encapsulating layer, and ultraviolet-cured epoxy encapsulant or silver paint disposed to form an airtight seal between the layers. The active layer has thickness of 200-500 nm.    USE - Organic inverted solar photovoltaic cell.    ADVANTAGE - The organic inverted solar photovoltaic cell has high efficiency and power conversion efficiency.    DETAILED DESCRIPTION - An organic inverted solar photovoltaic cell has substrate having face (a) and face (b), patterned indium-tin oxide (ITO) layer disposed on face (a) of substrate, patterned interfacial buffer layer of cesium carbonate disposed on the ITO layer, active layer of poly-3(hexylthiophene) and methyl(6,6)-phenyl-C61-butyrate disposed on the layer of cesium carbonate, encapsulating layer, and ultraviolet-cured epoxy encapsulant or silver paint disposed to form airtight seal between the layers. The encapsulating layer is glass, plastic, or cloth. The active layer has thickness of 200-500 nm. The anodic layer comprises poly(3,4) ethylenedioxythiophene:polystyrene sulfonate and 5 volume% of dimethylsulfoxide disposed on the active layer. The anodic layer has thickness of 100 nm to 1 mu m. The substrate is glass, plastic or cloth. The ITO layer is disposed as several contacts disposed in a primary direction on the glass substrate. An INDEPENDENT CLAIM is included for fabrication of organic inverted solar photovoltaic cell, which involves forming substrate comprising transparent piezoelectric material coated with indium tin oxide, forming cathode by spray coating layer of cesium carbonate on indium-tin oxide coating, forming active layer by spray coating layer of poly-3(hexylthiophene) and methyl(6,6)-phenyl-C61-butyrate disposed on the layer of cesium carbonate, forming anodic layer and encapsulating the organic inverted photovoltaic cell by applying ultraviolet-cured epoxy encapsulant or silver paint to the edges of the cell.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic view illustrating spraying of poly(3,4)ethylenedioxythiophene and poly(styrenesulfonate) on substrate through stainless steel shadow mask with airbrush.    Mask (2)    Spray device (3)    Substrate (5)    Active layer (30)    Interfacial buffer layer (40)