Title:
Photoelectric conversion device
Document Type and Number:
Japanese Patent JP5912404
Kind Code:
B2
Abstract:
A photoelectric conversion device includes at least two photoelectric conversion elements which have voltage-current characteristics different from each other. Further, one of the photoelectric conversion elements has photoelectric conversion efficiency higher than that of the other photoelectric conversion element under the environment in which room light can be obtained. Furthermore, the other photoelectric conversion element has photoelectric conversion efficiency higher than the one of the photoelectric conversion elements under the environment in which sunlight can be obtained. Moreover, each of the voltage of electric power generated in the at least two photoelectric conversion elements is adjusted by one of at least two DC-DC converters corresponding the photoelectric conversion element. In addition, part of the electric power generated in the one of the photoelectric conversion elements is used as drive electric power of the at least two DC-DC converter.
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Inventors:
Yoshiaki Ito
Kazuo Nishi
Kei Takahashi
Kazuo Nishi
Kei Takahashi
Application Number:
JP2011232509A
Publication Date:
April 27, 2016
Filing Date:
October 24, 2011
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H02S40/30; H01L31/043; H01L31/076
Domestic Patent References:
| JP2004079997A | ||||
| JP2001028452A | ||||
| JP1128476A | ||||
| JP63204665A | ||||
| JP2003204072A |
Foreign References:
| WO2005004304A1 |