NOVELTY - An organic inverted solar photovoltaic cell is fabricated by obtaining substrate coated with indium tin oxide (ITO), (200) applying photoresist to substrate by spray photolithography, (300) forming interstitial layer by spray coating a layer on top of indium tin oxide coating, (400) forming active layer by spray coating a layer of poly-3(hexylthiophene) and (6,6)-phenyl C61-butyric acid methylester disposed on interstitial layer, and (500) forming anodic layer by spray coating a layer of poly (3,4)ethylenedioxythiophene:poly-styrenesulfonate (PEDOT:PSS) doped with 5 vol.% dimethylsulfoxide.    USE - Fabrication of organic inverted solar photovoltaic cell (claimed).    ADVANTAGE - The organic inverted solar photovoltaic cell can be fabricated on most any desired substrates, both rigid and flexible, and uses all solution- processable organic solar layers with transparent contacts, allowing for improved light transmission through the cell. The method eliminates the need for high vacuum, high temperature, low production rate, and high manufacturing cost associated with current silicon and inorganic thin film photovoltaic products.    DETAILED DESCRIPTION - An organic inverted solar photovoltaic cell is fabricated by obtaining substrate coated with indium tin oxide (ITO), (200) applying photoresist to substrate by spray photolithography, (300) forming interstitial layer by spray coating a layer on top of indium tin oxide coating, (400) forming active layer by spray coating a layer of poly-3(hexylthiophene) and (6,6)-phenyl C61-butyric acid methylester disposed on interstitial layer, (500) forming anodic layer by spray coating a layer of poly (3,4)ethylenedioxythiophene:poly-styrenesulfonate (PEDOT:PSS) doped with 5 vol.% dimethylsulfoxide in which anodic layer is disposed on active layer, and annealing the layers on the substrate.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of the fabrication process of an organic solar cell.    Fabrication process of organic inverted solar photovoltaic cell (100)    Spray lithography to form ITO pattern (200)    Application of tuning layer by spray coating (300)    Application of active layer coating by spray coating (400)    Application of anode layer by spray coating (500)