Trials for exploitation of solar cell using organic dye substances were undertaken. The natural organic dye substances isolated from spinach leaves, grape skin, and synthetic dyes such as porphyrin derivatives were examined as the typical of organic dye substances. Fine powdered titanium oxide grains adsorbed the dyes described above were sintered on fluorine-doped stannic oxide glass. The amounts of electricity generated by prepared solar cells were measured by using a hand-made solar box.
Trials for exploitation of solar cell using organic dye substances were undertaken. The natural organic dye substance isolated from broccoli leaves, and synthetic dyes such as 1,10-phenanthroline dicarboxylic acid derivatives were examined as the typical of organic dye substances. Fine powdered titanium oxide grains adsorbed the dyes described above were sintered on fluorine-doped stannic oxide glass. A variety of devices for preparing solar cells was done to result a solid and constant value of produced electricity.
Trial for exploitation of solar cell using organic dye substances were undertaken. 17 synthetic porphyrins and 4 ratural porphyrins were estimated to use as a dye of dye-sensitized TiO_2 solar cell. To increase the PM(power max) of phytochlorin cell(F-cell) that has highest capacity among the porphrin cells mentioned above, two approach were chosen. One was to make use of auxiliary substances such as hydropuinone, quinone A, L-(-)- phenylalanine which increased PM of F-cell. PM enhancement up to 47% was realized. The other approach was to make use of synergy effect of other porphyrin (red) and auxiliary substances such as hydroquinone. There components system enhonces PM of F-cell up to 60%. Prelininary experiments were executed to make hybrid solar cells composed of organic sensitizers and inorganic materials such as phtalocyanine-porphyrin-silicon of hybrid cells.