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:
Sep. 22, 2009
Filed:
Feb. 09, 2005
Robert A. Beach, Altadena, CA (US);
Shouleh Nikzad, Valencia, CA (US);
Robert P. Strittmatter, Pasadena, CA (US);
Lloyd Douglas Bell, Sunland, CA (US);
Robert A. Beach, Altadena, CA (US);
Shouleh Nikzad, Valencia, CA (US);
Robert P. Strittmatter, Pasadena, CA (US);
Lloyd Douglas Bell, Sunland, CA (US);
Abstract
A photocathode, for generating electrons in response to incident photons in a photodetector, includes a base layer having a first lattice structure and an active layer having a second lattice structure and epitaxially formed on the base layer, the first and second lattice structures being sufficiently different to create a strain in the active layer with a corresponding piezoelectrically induced polarization field in the active layer, the active layer having a band gap energy corresponding to a desired photon energy.