NOVELTY - Photosensitive device comprises quantum dots having shell; and organic matrix where the quantum dots are embedded. The quantum dots and organic matrix are photoconductive semiconductors. The shell around each quantum dot is arranged as a tunneling barrier to require an electron in a lowest unoccupied molecular orbital of the organic matrix to perform quantum mechanical tunneling to reach the respective quantum dot.    USE - Used as solar cell.    ADVANTAGE - The device has improved efficiency by making use of quantum dots to create an intermediate band within a bandgap of the device, such as solar cell.    DETAILED DESCRIPTION - Photosensitive device comprises quantum dots having shell; and organic matrix where the quantum dots are embedded. The quantum dots and organic matrix are photoconductive semiconductors. The shell around each quantum dot is arranged as a tunneling barrier to require an electron in a lowest unoccupied molecular orbital (LUMO) of the organic matrix to perform quantum mechanical tunneling to reach the respective quantum dot. A first quantum state above the band gap in each quantum dot is between the LUMO and a highest occupied molecular orbital (HOMO) of the organic matrix. Wave functions of the first quantum state of the quantum dots overlap as an intermediate band. The organic matrix is composed of a photoconductive small molecule semiconductor or an inorganic semiconductor/electrical insulator. Each quantum dot is composed of a compound semiconductor consisting of III-V compound semiconductors, II-VI compound semiconductors, lead sulfide, lead selenide, lead-tellurium, silicon carbide, or their ternary and quaternary alloys. The shell around each quantum dot is composed of an inorganic electrical insulator consisting of oxides, nitrides, and oxynitrides.    DESCRIPTION OF DRAWING(S) - The figure shows energy band diagrams for a cross-section of an inorganic quantum dot in an inorganic matrix material, with the lowest quantum state in the conduction band providing the intermediate band.