Patents by Inventor Frédéric CHANDEZON

Frédéric CHANDEZON has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS FOR INCREASING THE PHOTOLUMINESCENCE INTERNAL QUANTUM EFFICIENCY OF NANOCRYSTALS, IN PARTICULAR OF AGINS2-ZNS NANOCRYSTALS
    Publication number: 20160280991
    Abstract: The photoluminescence internal quantum efficiency of nanoparticles formed in all or part of a nanocrystal of AgxMyM?zS0.5x+y+1.5z (I) type, including at least the stages in: (1) having available nanoparticles formed in all or part of a nanocrystal, the chemical composition of which corresponds to the formula (I): AgxMyM?zS0.5x+y+1.5z (I); the nanoparticles being functionalized at the surface by an organic ligand L1 different from a ligand of phosphine type; wherein the nanocrystals having the chemical composition of formula (I) are prepared beforehand via a process employing only a single stage of heat treatment; and (2) bringing together the nanoparticles and at least one ligand compound L2 of phosphine type of general formula PR3 (II), or its oxidized form O?PR3 (II?), under conditions favorable to an exchange, at least in part, of the organic ligands L1 by said ligands of phosphine type L2.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 29, 2016
    Applicant: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Théo CHEVALLIER, Frédéric CHANDEZON, Gilles LE BLEVENNEC