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:
Oct. 07, 1986
Filed:
May. 20, 1985
Applicant:
Inventors:
M Asif Khan, Burnsville, MN (US);
Richard G Schulze, Hopkins, MN (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 30 ; 357-4 ; 357 61 ;
Abstract
A high efficiency UV responsive negative electron affinity photocathode with the long wavelength cutoff tunable over the wavelength from .about.200 to .about.300 nm based on Al.sub.x Ga.sub.1-x N. Negative electron affinity photocathodes for sharply enhanced photoemission yield can be formed by applying a layer of cesium to the surface of Al.sub.x Ga.sub.1-x N for which the Fermi energy level is appropriately positioned.