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:
Apr. 20, 1976
Filed:
Feb. 06, 1974
Makoto Naito, Kamakura, JA;
Akinobu Kasami, Yokohama, JA;
Masaru Kawachi, Tokyo, JA;
Tetsuo Sadamasa, Tokyo, JA;
Hiroki Mineo, Yokohama, JA;
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JA;
Abstract
A method of manufacturing a gallium phosphide (GaP) red-emitting device by forming at least one n-type GaP layer on an n-type GaP substrate by the liquid phase epitaxial growth process and further depositing a p-type GaP layer on said n-type GaP layer, thereby providing a p-n junction contributing to emission of light, characterized in that the method comprises reducing the surface donor concentration of the n-type GaP layer to below 1 .times. 10.sup.18 cm.sup.-.sup.3 ; and epitaxially growing at least the light emitting region of the p-type GaP layer by cooling a solution for epitaxial growth of said p-type GaP layer at a slower rate than 5.degree.C per minute.