Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

Electricite De France

Ecole Polytechnique

Societe Francaise De Detecteurs Infrarouges-sofradir

UniversitÉ De Versailles—saint-Quentin-En-Yvelines

Université Versailles Saint-Quentin-En-Yvelines

Centre National De La Recherche Scientifique-cnrs

Arnaud Etcheberry

Anne-Marie Goncalves

Isabelle Gerard

Jean-Luc Pelouard

Jean-François Guillemoles

Frédéric Raynal

Pascal Le Floch

Michel Herlem

Nicolas Mezailles

Nicolas Mézailles

Jacky Vigneron

Pierre Tran-Van

Christophe Pautet

Alexandre Causier

Charles Mathieu

Anais Loubat

Henri Perez

Mathieu Fregnaux

The invention relates to the chemical etching of a semiconductor material, including: In particular, the aforementioned mask is produced in a material including polyphosphazene, which material protects the underlying semiconductor especially well.

Mask for protecting a semiconductor material for localized etching applications

A method for chemically passivating a surface of a product made of a III-V semiconductor material in which a) a P(N) polymer film is formed by deposition in a solvent comprising liquid ammonia. The film is formed by deposition, without electrochemical assistance, in the solvent, in the presence of an oxidizing chemical additive comprising phosphorous and generating electrical charge carriers in said surface.

Method for chemically passivating a surface of a product made of a III-V semiconductor material and the product obtained by such a method

The invention relates to a method for determining the maximum open circuit voltage and the power that can be output by a photoconverter material subject to a measurement light intensity, the method including the following steps: measuring the photoluminescent intensity of the material, measuring the absorption rate of the photoconverter material at a second wavelength substantially equal to the photoluminescent wavelength of the photoconverter material, determining the maximum open circuit voltage of the photoconverter material with the measurement light intensity by means of the absorption rate and the photoluminescent intensity measured at substantially the same wavelength; said invention being characterized in that the light source and the photoconverter material are arranged such that the angular distributions of the rays incident on and emitted by the lit surface of the material and collected by the detector are substantially identical.

Method for determining characteristics of a photoconverter without contact

A method for removing the growth substrate of a circuit of electromagnetic radiation detection, especially in the infrared or visible range, said detection circuit including a layer of detection of said radiation made of HgCdTe obtained by liquid or vapor phase epitaxy or by molecular beam epitaxy, said detection circuit being hybridized on a read circuit. The method includes submitting the growth substrate to a mechanical or chem.-mech. polishing step or to a chemical etch step to decrease its thickness, all the way to an interface area between the material of the detection circuit and the growth substrate; and submitting the interface thus obtained to an iodine treatment.

Method for manufacturing an electromagnetic radiation detector and detector obtained by a growth substrate removal method

The invention relates to novel nanoparticles comprising a metal core containing at least one platinoid or an alloy of a platinoid, a first organic coating formed from molecules attached to the surface of the metal core, and a second organic coating formed from molecules different from the molecules forming the first organic coating, and which are grafted onto molecules of the first organic coating. The invention also relates to the use of the nanoparticles as catalysts. The fields of application include devices for producing electrical energy, in particular in fuel cells, devices for detecting or assaying one or more chemical or biological species, in particular in sensors or multisensors, etc.

Nanoparticles comprising a metal core and an organic double coating useful as catalysts and device containing the nanoparticles

Growing community of inventors

Colombes, France

Arnaud Etcheberry