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:
Mar. 21, 1995
Filed:
Apr. 04, 1994
Michio Ohsawa, Kanagawa, JP;
Fuji Electric Corporate Research & Development Ltd., Kanagawa, JP;
Abstract
The quality of CuInSe.sub.2 solar cells is estimated during the manufacturing process by using a photoluminescence analysis. Emitted luminescence is measured upon irradiation of a CuInSe.sub.2 thin film with laser light, and estimation is performed on the basis of the luminous intensity. Specifically, non-defective products can be obtained by using lots in which the maximum luminous intensity in the spectral range of luminescent light of 0.8.about.0.9 eV of a sample cooled to liquid nitrogen-temperature or to liquid helium temperature is not lower than a predetermined value or is higher than the maximum luminous intensity in the spectral range of 0.9.about.1.0 eV. Further, after the manufacturing process is completed, by using this estimation, it is possible to rank the products after completion of the manufacturing process.