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. 07, 2021
Filed:
Jun. 03, 2019
Applicant:
Actlight SA, Lausanne, CH;
Inventors:
Assignee:
ACTLIGHT SA, Lausanne, CH;
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/0352 (2006.01); H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14605 (2013.01); H01L 27/1463 (2013.01); H01L 27/14636 (2013.01); H01L 27/14683 (2013.01);
Abstract
A photodetector device comprising n-type and p-type light absorbing regions arranged to form a pn-junction and n+ and p+ contact regions connected to respective contacts. The light absorbing regions and the contact regions are arranged in a sequence n+ p n p+ so that, after a voltage applied between the n+ and p+ contacts is switched from a reverse bias to a forward bias, electrons and holes which are generated in the light absorbing regions in response to photon absorption drift towards the p+ and n+ contact regions respectively, which causes current to start to flow between the contacts after a time delay which is inversely proportional to the incident light intensity.