NOVELTY - The photosensitive device to generate electricity, comprises a first and second electrode, organic photoconductive materials, a first continuous layer of donor host material, a second continuous layer of acceptor host material, and an organic photoconductive material. The organic photoconductive materials are disposed in a stack between the first and the second electrode. The organic photoconductive material is disposed as discontinuous islands between the first and second continuous layer, and has an absorption spectra different from the donor and acceptor host material.    USE - Useful to produce or detect electromagnetic radiation electronically or to generate electricity from ambient electromagnetic radiation.    ADVANTAGE - The photosensitive device is less weight, economical, and deposited on low cost substrates such as flexible plastic foils.    DETAILED DESCRIPTION - The photosensitive device to generate electricity, comprises a first and second electrode, organic photoconductive materials, a first continuous layer of donor host material, a second continuous layer of acceptor host material, and an organic photoconductive material. The organic photoconductive materials are disposed in a stack between the first and the second electrode. The organic photoconductive material is disposed as discontinuous islands between the first and second continuous layer, and has an absorption spectra different from the donor and acceptor host material. A reflective surface is provided by the first electrode, the second electrode, and a reflector. Each of the discontinuous islands has a crystallite of the respective organic photoconductive material, and a dimension not greater than 100 nm. The first continuous layer is in direct contact with the second continuous layer in-between the islands of the organic photoconductive material. The donor and the acceptor host material are small molecules. A band gap of a small molecule first organic photoconductive material is less than a band gap of both the donor and the acceptor host material. The band gap of the first organic photoconductive material is greater than the band gap of both the donor and the acceptor host material. The band gap of the first organic photoconductive material is in between the band gap of both the donor and the acceptor host material. The first organic photoconductive material has a hole mobility of less than 1x10-9 cm2/Vs and an absorption coefficient of 5x104 cm-1 across a wavelength band from 600-900 nm. A portion of the islands of the first organic photoconductive material are disposed at an optical path length of lambda 1d+ lambda 1/4 from the reflective surface of the device, where lambda -1 is a wavelength in the wavelength band, d is an integer greater than or equal to 0, and the reflective surface is reflective to 50% of incident light at lambda 1. The organic photoconductive materials are a part of a first cell in a stack of photoactive cells. The photoactive cells are disposed between the first electrode and the second electrode. A second cell of the stack of photoactive cells has a donor-acceptor heterojunction. The first cell and the second cell have different absorption characteristics. An average absorption of the first cell is greater than the average absorption of the second cell over a range of wavelengths lambda 1 plus minus 5%, and an average absorption of the second cell is greater than the average absorption of the first cell over a range of wavelengths lambda 2 plus minus 5%, where lambda 1 greater than or equal to lambda 2+10%. The discontinuous islands include islands of a first photoconductive material and islands of a second photoconductive material. The first photoconductive material has an absorption spectra different from the second photoconductive material. A distance from a point within each island of the first photoconductive material to a boundary of the island is not more than an exciton diffusion length of the first organic photoconductive material. A distance from a point within each island of the second photoconductive material to a boundary of the island is not more than an exciton diffusion length of the second organic photoconductive material. The acceptor host material is 60C. An INDEPENDENT CLAIM is included for a method of fabricating a photosensitive optoelectronic device.    DESCRIPTION OF DRAWING(S) - The figure shows an organic photosensitive device:    Substrate; (110)    Anode; (120)    Smoothing; (122)    Photoactive region; (150)    Cathode. (170)