Photoelectrochemical cell and energy system using same

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United States of America Patent

PATENT NO 8821700
APP PUB NO 20120276464A1
SERIAL NO

13502322

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Abstract

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A photoelectrochemical cell (100) includes: a semiconductor electrode (120) including a conductor (121), a first n-type semiconductor layer (122) having a nanotube array structure, and a second n-type semiconductor layer (123); a counter electrode (130) connected to the conductor (121); an electrolyte (140) in contact with the second n-type 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). Relative to a vacuum level, (I) band edge levels of a conduction band and a valence band in the second n-type semiconductor layer (123), respectively, are higher than band edge levels of a conduction band and a valence band in the first n-type semiconductor layer (122), (II) a Fermi level of the first n-type semiconductor layer (122) is higher than a Fermi level of the second n-type semiconductor layer (123), and (III) a Fermi level of the conductor (121) is higher than the Fermi level of the first n-type semiconductor layer (122).

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Patent Owner(s)

  • PANASONIC CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hato, Kazuhito Osaka, JP 40 257
Kuroha, Tomohiro Osaka, JP 44 276
Nomura, Takaiki Osaka, JP 57 402
Suzuki, Takahiro Osaka, JP 540 4436
Taniguchi, Noboru Osaka, JP 58 487
Tokuhiro, Kenichi Osaka, JP 22 289

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