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. 21, 2004
Filed:
Aug. 02, 2002
Applicant:
Inventors:
Howard Wing Hoon Lee, Fremont, CA (US);
Bingshen Gao, Mountain View, CA (US);
Majid Keshavarz, Pleasanton, CA (US);
Assignee:
UltraDots, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/176 ;
U.S. Cl.
CPC ...
H01L 2/176 ;
Abstract
The invention relates to a method of forming a quantum dot. A particle that includes a semiconductor material Y selected from the group consisting of Si and Ge is provided. Sound energy and light energy is applied to the particle to form a quantum dot. The quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent. The quantum dot includes a core, and the core includes Y.