NOVELTY - The photosensitive device (100) comprises a first electrode (102), a second electrode (114), a preferential hole conducting an organic seed layer (104), a cell comprising a first photosensitive layer and a second photosensitive layer, a blocking layer (112), a second cell, a second preferential hole conducting organic seed layer, and a third electrode. The first photosensitive layer of the device exhibits an orientation that is substantially vertical to the first electrode and/or second electrode, and is positioned directly on the preferential hole.    USE - The photosensitive device including a solar cell, an inverted solar cell and a tandem solar cell (all claimed) is useful to generate a usable electrical current from incident electromagnetic radiation and to detect incident electromagnetic radiation.    ADVANTAGE - The photosensitive device can be easily manufactured with high power conversion efficiency and increased crystallinity.    DETAILED DESCRIPTION - The photosensitive device (100) comprises a first electrode (102), a second electrode (114), a preferential hole conducting an organic seed layer (104), a cell comprising a first photosensitive layer and a second photosensitive layer, a blocking layer (112), a second cell, a second preferential hole conducting organic seed layer, and a third electrode. The first photosensitive layer of the device exhibits an orientation that is vertical to the first electrode and/or second electrode, and is positioned directly on the preferential hole. The preferential hole is positioned between the first electrode and the cell and directly on the first electrode, and has a thickness of 5-50 nm. The second photosensitive layer is positioned between the second electrode and the first photosensitive layer. The cell further comprises a third photosensitive layer that is positioned between the first and second photosensitive layers. The blocking layer is positioned between the cell and the second electrode. The second preferential hole is positioned between the second electrode and the cell. The preferentially hole has a thickness to achieve the following characteristics, when compared to a device without the preferentially hole conducting organic seed layer: increased open circuit voltage; increased short circuit current; and increased fill factor. An INDEPENDENT CLAIM is included for a method preparing a photosensitive device.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a photosensitive device.    Photosensitive device (100)    First electrode (102)    Organic seed layer (104)    Organic photoactive layer (108)    Blocking layer (112)    Second electrode. (114)