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:
Jun. 18, 2024
Filed:
Jan. 31, 2020
Applicant:
The University of Chicago, Chicago, IL (US);
Inventors:
Philippe Guyot-Sionnest, Chicago, IL (US);
Xin Tang, Chicago, IL (US);
Matthew M. Ackerman, Chicago, IL (US);
Assignee:
THE UNIVERSITY OF CHICAGO, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/0352 (2006.01); H01L 27/146 (2006.01); H01L 31/101 (2006.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/035218 (2013.01); H01L 27/14652 (2013.01); H01L 31/1013 (2013.01); H01L 31/1828 (2013.01);
Abstract
Photodetectors based on colloidal quantum dots and methods of making the photodetectors are provided. Also provided are methods for doping films of colloidal quantum dots via a solid-state cation exchange method. The photodetectors include multi-band photodetectors composed of two or more rectifying photodiodes stacked in aback-to-back configuration. The doping methods rely on a solid-state cation exchange that employs sacrificial semiconductor nanoparticles as a dopant source for a film of colloidal quantum dots.