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. 06, 1990
Filed:
May. 12, 1988
Applicant:
Inventor:
Shaw Ehara, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 30 ; 357-2 ; 357 16 ; 357 31 ; 357 52 ;
Abstract
A photocathode with high photoelectric conversion ratio over an extended wavelength range of incident light has a hetero junction formed between thin films of a p-type amorphous silicon alloy having energy gap matching the energy of the incident light and an n-type semiconductor with small work function or large coefficient of secondary electron emission.