NOVELTY - An electro-optic device used in solar cells and electroluminescent devices comprises a p-type semiconductor nanorod array (13) arranged on a first support material, in physical contact with an n-type semiconductor nanorod array (23) that is arranged on a second support material. The p- and n-type nanorod arrays support quantum dot nanoparticles and a photosensitizer or electroluminescent dye, which are capable of generating an electron hole pair upon irradiation. The dye is a mixture of two or more dye compounds.    USE - Used in solar cells and electroluminescent devices.    ADVANTAGE - The electro-optic device improves long-term stability and the resistance of the solar cells to environmental stress like temperature changes and mechanical loads, and is simple and cost effective.    DETAILED DESCRIPTION - The electro-optic device useful in solar cells and electroluminescent devices, comprises a p-type semiconductor nanorod array (13) arranged on a first support material, in physical contact with an n-type semiconductor nanorod array (23) that is arranged on a second support material. The p- and n-type nanorod arrays support quantum dot nanoparticles and a photosensitizer or electroluminescent dye, which are capable of generating an electron hole pair upon irradiation. The dye is a mixture of two or more dye compounds. The material forming the quantum dot nanoparticles is semiconductor compounds having second and sixth group elements. The p- and n-type arrays are replaced by p- and n-type semiconductor polymers. The support material of the nanorod arrays is formed of a substrate material, which is electrically conductive or coated with an electrically conductive electrode layer arranged between the substrate and the nanorod arrays. The n-type semiconductor nanorod array material is second, third, fourth, fifth and sixth group elements and their oxides and is doped with elements of first group and their mixtures, and third and/or fifth group elements. The p-type nanorod array material is second, third, fourth, fifth and sixth groups elements and their oxides and is doped with elements of fifth group and their mixtures, and fourth and/or sixth group elements.    INDEPENDENT CLAIMS are also included for the following:    (1) a solar cell;    (2) an electroluminescent device; and    (3) producing an electro-optic device.    DESCRIPTION OF DRAWING(S) - The figure shows a dye sensitized solar cell:    Substrates; (10, 20)    Electrode layers; (11, 21)    Electrodes; (12, 22)    p-type semiconductor nanorod array; (13)    n-type semiconductor nanorod array. (23)