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.:
Date of Patent:
Sep. 15, 2015
Filed:
Jul. 09, 2012
Akihiko Sakamoto, Shiga, JP;
Yoshimasa Kawamura, Shiga, JP;
Masakazu Tanida, Shiga, JP;
Masato Muguruma, Shiga, JP;
Yusuke Himei, Shiga, JP;
Akihiko Sakamoto, Shiga, JP;
Yoshimasa Kawamura, Shiga, JP;
Masakazu Tanida, Shiga, JP;
Masato Muguruma, Shiga, JP;
Yusuke Himei, Shiga, JP;
NIPPON ELECTRIC GLASS CO., LTD., Otsu-shi, Shiga, JP;
Abstract
Provided is a glass base material having excellent sodium feeding capability as a glass base material for solar cells such as compound semiconductor solar cells. The invention is concerned with a glass base material which is used for solar cells, wherein on at least one surface thereof, a sodium concentration in a depth of 0.2 μm from the surface of the glass base material is 0.55 or larger in terms of a relative value relative to a sodium concentration in a depth of 1 μm from the surface of the glass base material.