Solid material in the divided state, process for the production of such a material, and use of such a material in a photovoltaic cell
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United States of America Patent
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Nov 5, 2013
Grant Date -
Sep 13, 2012
app pub date -
Sep 8, 2010
filing date -
Sep 10, 2009
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Abstract
The invention relates to a solid material with the following formula (A): (Cu+1a-u; Ag+1u; Zn+2b-v-(y/2); Cd+2v; Sn+4c-w-(y/2); 1X+4w; 2X+3y; S−2x)(A), in which the solid material: is in divided state in the form of particles having a mean equivalent diameter of 15 nm to 400 nm; has, according to X-ray diffraction analysis of the solid material, a unique crystalline structure; is suitable for forming a stable dispersion of at least one solid material with formula (A) in a liquid, referred to as dispersion liquid, made up of at least one compound with a value of δp higher than 8 and a value of δH higher than 5.
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