The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7488890 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 10, 2009

Filed:

Mar. 22, 2004
Applicants:

Tatsuya Takamoto, Ikoma-gun, JP;

Takaaki Agui, Yamatokoriyama, JP;

Inventors:

Tatsuya Takamoto, Ikoma-gun, JP;

Takaaki Agui, Yamatokoriyama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/00 (2006.01); H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

On a surface of a GaAs substrate, layers to be a top cell are formed by epitaxial growth. On the top cell, layers to be a bottom cell are formed. Thereafter, on a surface of the bottom cell, a back surface electrode is formed. Thereafter, a glass plate is adhered to the back surface electrode by wax. Then, the GaAs substrate supported by the glass plate is dipped in an alkali solution, whereby the GaAs substrate is removed. Thereafter, a surface electrode is formed on the top cell. Finally the glass plate is separated from the back surface electrode. In this manner, a compound solar battery that improves efficiency of conversion to electric energy can be obtained.


Find Patent Forward Citations

Takamoto, Tatsuya. (2009). Compound solar battery and manufacturing method thereof (U.S. Patent No. 7488890). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7488890

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