Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Reexamination Certificate
2007-10-16
2007-10-16
Nguyen, Nam (Department: 1753)
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
C136S252000, C136S256000, C438S082000
Reexamination Certificate
active
11199211
ABSTRACT:
The invention regards application of lignin derivatives to a photoelectric transducer. The photoelectric transducer of the invention includes a semiconductor film as a thin film electrode, that is photosensitized by one or multiple lignin derivatives selected from the group consisting of: (a) a lignophenol derivative or a phenol derivative of lignin that is prepared by solvating a lignin-containing material with a phenol compound and adding an acid to the solvate; (b) a secondary derivative that is prepared by one reaction of the lignophenol derivative (a) selected among acylation, carboxylation, amidation, introduction of a crosslinking group, and alkali treatment; (c) a higher-order derivative that is prepared by at least two reactions of the lignophenol derivative (a) selected among acylation, carboxylation, amidation, introduction of the crosslinking group, and alkali treatment; (d) a crosslinked secondary derivative that is prepared by crosslinking the secondary derivative (b) obtained by the introduction of the crosslinking group; and (e) a crosslinked higher-order derivative that is prepared by crosslinking the higher-order derivative (c) obtained by the introduction of the crosslinking group.
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Hara et al., “A Coumarin-Derivative Dye Sensitized Nanocrystalline TiO2Solar Cell Having a High Solar-Energy Conversion Efficiency Up to 5.6%,”The Royal Society of Chemistry, Chem. Commun. pp. 569-570, {2001}.
Aoyagi Mitsuru
Funaoka Masamitsu
Barton Jeffrey
Japan Science and Technology Agency
Nguyen Nam
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