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. 19, 2019
Filed:
Aug. 10, 2017
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Ryo Suzuki, Fujisawa, JP;
Hiroyasu Yamashita, Isehara, JP;
Junichi Kon, Isehara, JP;
Hironori Nishino, Isehara, JP;
FUJITSU LIMITED, Kawasaki-shi, JP;
Abstract
A photodetector includes a lower contact layer, a first absorber layer that is formed over the lower contact layer and that is photosensitive to light of a first wavelength, an middle contact layer formed over the first absorber layer, a second absorber layer that is formed over the middle contact layer and that is photosensitive to light of a second wavelength, and an upper contact layer formed over the second absorber layer, wherein a barrier layer is formed between the lower contact layer and the first absorber layer, between the first absorber layer and the middle contact layer, between the middle contact layer and the second absorber layer, or between the second absorber layer and the upper contact layer.