Centre National De La Recherche Scientifique

Université Paul Sabatier (toulouse Iii)

Institut National Des Sciences Appliquees De Toulouse

Ecole Superieure Des Beaux-arts De La Reunion

Jean-Yves Chane-Ching

Oana Zaberca

Azmach Tolesa

Arnaud Gillorin

Xavier Marie

Andrea Balocchi

Pascal Dufour

A colloidal dispersion of a metal chalcogenide material in divided state in an aqueous liquid phase selected from the group consisting of aqueous solutions and solutions including a mixture of water and at least one solvent that is miscible with water, wherein the carbon element of the material is present in a proportion of less than 2.5 wt. % as determined by elemental analysis, the concentration of the material in the colloidal dispersion is more than 40 g/l, and the colloidal dispersion has a charge potential value which is negative and the absolute value of which is higher than 20 mV.

Colloidal dispersion of a material in a divided state and consisting of metal chalcogenide in an aqueous medium, material in a divided state, and uses thereof

The invention relates to a solid material with the following formula (A): (Cu; Ag; Zn; Cd; Sn;X;X; S)(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 &#x3b4;higher than 8 and a value of &#x3b4;higher than 5.

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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Toulouse, France

Jean-Yves Chane-Ching