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:
Feb. 18, 2014
Filed:
Mar. 13, 2012
Levine Peter Alan, West Windsor, NJ (US);
Pradyumna Swain, Gaithersburg, MD (US);
Mahalingam Bhaskaran, Lawrenceville, NJ (US);
Levine Peter Alan, West Windsor, NJ (US);
Pradyumna Swain, Gaithersburg, MD (US);
Mahalingam Bhaskaran, Lawrenceville, NJ (US);
SRI International, Menlo Park, CA (US);
Abstract
A back-illuminated semiconductor imaging device on a semiconductor-on-insulator substrate is disclosed. The device includes an insulator layer, a semiconductor substrate having an interface with the insulator layer, an epitaxial layer grown on the semiconductor substrate; and one or more imaging components in the epitaxial layer. The semiconductor substrate and the epitaxial layer exhibit a net doping concentration profile having a maximum value at a predetermined distance from the interface which decreases monotonically on both sides of the profile. The doping profile between the interface with the insulation layer and the peak of the doping profile functions as a 'dead band' to prevent dark current carriers from penetrating to the front side of the device.