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:
Jun. 23, 2020
Filed:
Sep. 12, 2017
Applicant:
Intevac, Inc., Santa Clara, CA (US);
Inventors:
Kenneth A. Costello, Union City, CA (US);
Verle W. Aebi, Menlo Park, CA (US);
Michael Jurkovic, San Ramon, CA (US);
Xi Zeng, San Jose, CA (US);
Assignee:
INTEVAC, INC., Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J 29/04 (2006.01); H01J 31/48 (2006.01); H01J 31/49 (2006.01);
U.S. Cl.
CPC ...
H01J 29/04 (2013.01); H01J 31/48 (2013.01); H01J 31/49 (2013.01); H01J 2231/501 (2013.01);
Abstract
A novel photocathode employing a conduction band barrier is described. Incorporation of a barrier optimizes a trade-off between photoelectron transport efficiency and photoelectron escape probability. The barrier energy is designed to achieve a net increase in photocathode sensitivity over a specific operational temperature range.