Photoelectrochemical cell and energy system using same

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United States of America Patent

PATENT NO 9157155
APP PUB NO 20120156578A1
SERIAL NO

13393107

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Abstract

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A photoelectrochemical cell (100) includes: a semiconductor electrode (120) including a conductor (121) and semiconductor layers (122, 123) disposed on the conductor (121); a counter electrode (130) connected electrically to the conductor (121); an electrolyte (140) in contact with surfaces of the semiconductor layer (123) and the counter electrode (130); and a container (110) accommodating the semiconductor electrode (120), the counter electrode (130) and the electrolyte (140). A band edge level ECS of a conduction band, a band edge level EVS of a valence band, and a Fermi level EFS in a surface near-field region of the semiconductor layer, and a band edge level ECJ of a conduction band, a band edge level EVJ of a valence band, and a Fermi level EFJ in a junction plane near-field region of the semiconductor layer with the conductor satisfy, relative to a vacuum level, ECS−EFS>ECJ−EFJ, EFS−EVSFJ−EVJ, ECJ>−4.44 eV, and EVS<−5.67 eV. The Fermi level EFS in the surface near-field region of the semiconductor layer and the Fermi level EFJ in the junction plane near-field region of the semiconductor layer with the conductor satisfy, relative to the vacuum level, −5.67 eVFS<−4.44 eV and −5.67 eVFJ<−4.44 eV, respectively.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD1-61 SHIROMI 2-CHOME CHUO-KU OSAKA-SHI OSAKA 5406207 ?5406207

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hato, Kazuhito Osaka, JP 40 334
Kuroha, Tomohiro Aichi, JP 46 355
Nomura, Takaiki Osaka, JP 58 479
Suzuki, Takahiro Osaka, JP 564 4900
Tamura, Satoru Osaka, JP 46 450
Taniguchi, Noboru Osaka, JP 60 497
Tokuhiro, Kenichi Osaka, JP 22 366

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