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:
Aug. 05, 2014
Filed:
Nov. 07, 2008
Toshikazu Matsui, Hamamatsu, JP;
Yasumasa Hamana, Hamamatsu, JP;
Kimitsugu Nakamura, Hamamatsu, JP;
Yoshihiro Ishigami, Hamamatsu, JP;
Daijiro Oguri, Hamamatsu, JP;
Toshikazu Matsui, Hamamatsu, JP;
Yasumasa Hamana, Hamamatsu, JP;
Kimitsugu Nakamura, Hamamatsu, JP;
Yoshihiro Ishigami, Hamamatsu, JP;
Daijiro Oguri, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
The present invention aims at providing a photocathode which can improve various characteristics. In a photocathode, an intermediate layer, an underlayer, and a photoelectron emission layerare formed in this order on a substrate. The photoelectron emission layercontains Sb and Bi and functions to emit a photoelectron in response to light incident thereon. The photoelectron emission layercontains 32 mol % or less of Bi relative to SbBi. This can dramatically improve the linearity at low temperatures.