Centre National De La Recherche Scientifique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Université De Nantes

Ardeje

Mireille Richard-Plouet

Solenn Berson

Stéphane Guillerez

Luc Brohan

Noëlla Lemaitre

Jérôme Mourao

Moustafa El Kass

Luc René Roger Brohan

Arkadiusz Michal Karpinski

Mickaël Barret

The invention concerns a solution of tungstate ions W(VI) comprising as solvent at least one optionally partly etherified polyalcohol, a preparation method and uses thereof. The invention further concerns a layer comprising at least one tungsten oxide WOcomprising one or more polyoxotungstate complexes, methods for preparing the same and uses thereof, and in particular a photovoltaic device comprising said layer of material.

Tungstate ion solution and hybrid photovoltaic device

The invention relates to a method for preparing a colloidal nanoparticle solution, including: (a) dissolving a titanium-oxide precursor, referred to as a precursor, in one or more solvents, referred to as precursor solvents; and (b) chemically converting, preferably by means of hydrolysis, said titanium-oxide precursor and said precursor solvent into a colloidal-solution solvent so as to form titanium-oxide nanoparticles that are dispersed in the colloidal-solution solvent, said colloidal solution having a dynamic viscosity of between 4 and 54 cP at 20&#xb0; C. and 101,325 Pa. The invention also relates to a colloidal titanium-oxide nanoparticle solution containing a dispersion of titanium-oxide nanoparticles in a solvent or system of solvents, the viscosity of which is between 4 and 54 cP, said solution being particularly obtainable according to the method of the invention, as well as to the uses thereof, in particular for preparing photovoltaic cells. The invention also relates to a method for generating power using a semiconductor prepared from said solution.

Formulation of colloidal titanium-oxide solutions composition for coating and printing methods, and improvement of the output and lifespan of organic P-I-N/N-I-P photovoltaic cells

Growing community of inventors

Suce sur Erdre, France

Mireille Richard-Plouet