ION ETCHING OF GROWING InP NANOCRYSTALS USING MICROWAVE

  • US 20130043210A1
  • Filed: 10/05/2012
  • Published: 02/21/2013
  • Est. Priority Date: 07/10/2008
  • Status: Active Grant
First Claim
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1. A method of producing nanoparticles exhibiting enhanced photoluminescence quantum yield comprising the steps of:

  • providing stock solutions of Group IV-VI elements;

    providing an ionic liquid containing an anion that thermally degrades to form an ion etchant, wherein the anion is BF4, PF6, F, ClO4, PO4, chloride, bromide, acetate, or hydroxide;

    placing the ionic liquid into a microwave reactor vessel;

    dissolving the stock solutions of Group IV-VI elements in a solute and injecting the resulting solution into the microwave reactor vessel;

    subjecting the solutions in the microwave reactor vessel to microwave irradiation, wherein the microwave irradiation degrades the anion of the ionic liquid into an etchant;

    where the etchant is F

    , Cl

    , Br

    , or O

    ;

    allowing the stock solutions of Group IV-VI elements to form nanoparticles, wherein the nanoparticles are etched in situ by the etchant during nanoparticle growth; and

    collecting the resulting nanoparticles.

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