Process for manufacturing colloidal materials, colloidal materials and their uses
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United States of America Patent
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Apr 21, 2015
Grant Date -
Oct 13, 2011
app pub date -
Sep 10, 2009
filing date -
Sep 11, 2008
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Abstract
A colloidal material and a process for manufacturing it and uses of the colloidal material for manufacturing optic devices. The colloidal material is of formula AnXm, wherein A is an element selected from groups II, III or IV of the periodic table; X is a metal selected from groups V or VI; and in the selection of the pair (A, X), the groups of the periodic table of A and X, respectively, are selected from the following combinations: (group II, group VI), (group III, group V) or (group IV, group VI); and n and m are such that AnXm is a neutral compound. The colloidal compound may be CdS, InP, or PbS. The process includes a step of solution phase decomposition of a mixture of X and a carboxylate of formula A(R—COO)p in the presence of a non- or weakly-coordinating solvent, and injecting an acetate salt or acetic acid in the mixture; wherein p is an integer between 1 and 2; R is a linear or branched C1-30alkyl group.
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