Sharp Kabushiki Kaisha Corporation

National Institute of Advanced Industrial Science and Technology

Agency of Industrial Science and Technology

Ashraful Islam

Hironori Arakawa

Hideki Sugihara

Kohjiro Hara

Atsushi Fukui

Liyuan Han

Kazuhiro Sayama

Naoki Koide

Nobuhiro Fuke

Lok Pratap Singh

Masatoshi Yanagida

A photosensitizing transition metal complex of the formula (Ia) MLY, (Ib) MLX(Ic) MLYX, (Id) MLYX or (Ie) MLYX in which M is a transition metal selected from ruthenium, osmium, iron, rhenium and technetium, preferably ruthenium or osmium. X is a co-ligand independently selected from NCS&#x2014;, Cl&#x2014;, Br&#x2014;, I&#x2014;, CN&#x2014;, HO; pyridine unsubstituted or substituted by at least one group selected from vinyl, primary, secondary or tertiary amine, OH and Calkyl, preferably NSC and CN&#x2014;; L is a tridentate polypyridine ligand, carrying at least one carboxylic, phosphoric acid or a chelating group and one substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, substituted or unsubstituted alkylamide group having 2 to 30 carbon atoms or substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms. A dye-sensitized electrode includes a substrate having an electrically conductive surface, an oxide semiconductor film formed on the conductive surface, and the above sensitizer of formula (Ia), (Ib), (Ic), (Id) or (Ie) as specified above, supported on the film. A solar cell includes the above electrode, a counter electrode, and an electrolyte deposited there between.

Photosensitizing transition metal complex and its use for photovoltaic cell

Ruthenium complex useful as sensitizer, dye-sensitized oxide semiconductor electrode and solar cell using same

A platinum complex represented by the formula PtL,/L,or PtLX,/LX,wherein L,and L each represent a ligand selected from the group consisting of 2,2&prime;-bipyridine compounds having at least one anionic group and 1,10-phenanthroline compounds having at least one anionic group, L,represents a dithiolate selected from those represented by the formulas (a) through (d) shown in the specification, and X,and X,each represent a thiolate selected from those represented by the following formulas (e) and (f) shown in the specification. A dye-sensitized electrode includes a substrate having an electrically conductive surface, an oxide semiconductor film formed on the conductive surface, and the above platinum complex supported on the film. A solar cell includes the above electrode, a counter electrode, and an electrolyte disposed therebetween.

Platinum complex for use as sensitizer for semiconductor electrode of solar cell

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Yamatotakada, Japan

Ashraful Islam