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. 01, 2005
Filed:
Aug. 19, 2003
Moungi Bawendi, Boston, MA (US);
Klaus F. Jensen, Lexington, MA (US);
Bashir O. Dabbousi, Dhahran, SA;
Javier Rodriguez-viejo, Sant Cugat del Valles, ES;
Frederic Victor Mikulec, Somerville, MA (US);
Moungi Bawendi, Boston, MA (US);
Klaus F. Jensen, Lexington, MA (US);
Bashir O. Dabbousi, Dhahran, SA;
Javier Rodriguez-Viejo, Sant Cugat del Valles, ES;
Frederic Victor Mikulec, Somerville, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A coated nanocrystal capable of light emission includes a substantially monodisperse nanoparticle selected from the group consisting of CdX, where x=S, Se, Te and an overcoating of ZnY, where Y=S, Se, uniformly deposited thereon, said coated nanoparticle characterized in that when irradiated the particles exhibit photoluminescence in a narrow spectral range of no greater than about 60 nm, and most preferably 40 nm, at full width half max (FWHM). The particle size of the nanocrystallite core is in the range of about 20 Å to about 125 Å, with a deviation of less than 10% in the core. The coated nanocrystal exhibits photoluminescence having quantum yields of greater than 30%.