NOVELTY - Device comprises photovoltaic cell having first electrode layer, photoactive layer disposed on the layer, second electrode layer disposed on photoactive layer, first carrier collector structure (110) with first work function electrically coupled to first electrode layer and extending partially into photoactive layer, and second carrier collector structure (112) with second work function different from first work function electrically coupled to second electrode layer and extending partially into photoactive layer where at least one of the electrode layers is optically transparent.    USE - As photovoltaic device; for fabricating high efficiency hybrid organic-inorganic photovoltaic cells and devices.    ADVANTAGE - The device provides hybrid organic-inorganic photovoltaic cells architecture with higher cell efficiency as compared to conventional organic photovoltaic cells architectures.    DETAILED DESCRIPTION - A device comprising at least one photovoltaic cell having first electrode layer, photoactive layer disposed on first electrode layer, second electrode layer disposed on the photoactive layer, first carrier collector structure (110) with a first work function electrically coupled to the first electrode layer and extending partially into the photoactive layer, and second carrier collector structure (112) with a second work function different from the first work function electrically coupled to the second electrode layer and extending partially into the photoactive layer, where the first carrier collector structure extends towards the second electrode layer without physically contacting the second carrier collector structure, where the second carrier collector structure extends towards the first electrode layer without physically contacting the first carrier collector structure, where at least one of the first and second electrode layers is optically transparent. An INDEPENDENT CLAIM is included for fabricating photovoltaic device involving forming first electrode layer that is optically transparent and electrically conductive; forming conformal layer over the upper surface of the first electrode layer defining gap region between adjacent ones of the first carrier collection structures, the conformal layers comprising first electrically insulating layer; depositing electrically conductive layer over the conformal layer, to fill the gap regions; removing at least portion of the electrically conductive layer to define isolated second carrier collection structures between the first carrier collection structures; and removing a portion of the conformal layers to expose sidewall portions of the first carrier collection structures and sidewall portions of the second carrier collection structures.    DESCRIPTION OF DRAWING(S) - The figure shows view during first exemplary process for fabricating interdigitated array of photovoltaic cells.    substrate (102)    Bottom electrode (104)    First carrier collector structure (110)    Second carrier collector structure (112)    Electrical insulator portions (114)