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:
Nov. 20, 2012
Filed:
Apr. 29, 2009
Peter Reiss, Saint Egreve, FR;
LI Liang, Los Alamos, NM (US);
Peter Reiss, Saint Egreve, FR;
Li Liang, Los Alamos, NM (US);
Abstract
The present invention comprises a method for preparing a nanocrystal having (i) a core comprising a semiconductor comprising A representing a metal or metalloid in the +III oxidation state and B representing an element in the −III oxidation state, coated with (ii) a shell in which the outer portion comprises a semiconductor having the formula ZnSE, where E represents an element in the −II oxidation state and x is a decimal number such that 0≦x<1, said method comprising a step consisting of heating a mixture of at least one precursor of A, at least one precursor of B, at least one precursor of zinc, at least one precursor of sulphur and, optionally, at least one precursor of E, from a temperature Tto a temperature Tgreater than Tin an increasing manner and so as to form, firstly, said core then said shell. The present invention also concerns a nanocrystal obtainable by the invention method and uses thereof.