NOVELTY - A light functional material contains quinoxaline derivative compound (1).    USE - For sensitizing dye for photoelectric conversion material for photoelectric conversion electrode and photoelectric conversion cell (all claimed) for solar power generation in solar cells such as single crystal-silicon solar cell, polycrystalline-silicon solar cell, amorphous-silicon solar cell, cadmium telluride and selenized indium copper cell, and photoluminescence material and optical absorption material.    ADVANTAGE - The light functional material provides photoelectric conversion cell with high photoelectric conversion efficiency and stability over long period of time. Photodegradation and thermal deterioration during manufacture of battery are prevented.    DETAILED DESCRIPTION - A light functional material contains quinoxaline derivative compound of formula (1).    A1,A2,D1,D2=H or substituent;and    R1,R2=H or monovalent organic residue, and A1,A2,D1,D2,R1,R2 optionally couple to form ring.    When D1 and/or D2 is electron donating substituent A1 and/or A2 is acidic substituent or its derivative and vice versa.    INDEPENDENT CLAIMS are included for the following:    (1) sensitizing dye for photoelectric conversion, which comprises above light functional material;    (2) photoelectric conversion material, which is formed by connecting the sensitizing dye and an inorganic semiconductor porous material;    (3) photoelectric conversion electrode, which is formed by laminating a transparent electrode laminated with above photoelectric conversion material; and    (4) photoelectric conversion cell, which comprises the photoelectric conversion electrode, an electrolyte layer and an electroconductive counter electrode.    DESCRIPTION OF DRAWING(S) - The figure shows a photoelectric conversion cell. (Drawing includes non-English language text).    titanium oxide porous layer (1)    electrolytic-solution layer (2)    transparent electrode layer (3)    platinum electrode layer (4)    glass substrate (5)