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

Commissariat a L'energie Atomique

Centre National De La Recherche Scientifique

Peter Reiss

Pascale Chenevier

Adam Pron

Valentina Ivanova-Hristova

Olga Burchak

Nicolas Charvet

Julia De Girolamo

Li Liang

Joel Bleuse

Sylvia Sanchez

Claudia Querner

Tugce Akdas

Dimitry Aldakov

Daniel Communal

Liang Li

A set of nanocrystals comprising a semiconductor comprising A representing a metal or metalloid in the +III oxidation state and B representing an element in the −III oxidation state, the nanocrystals being doped, on average per nanocrystal, by an atom of C chosen from the transition metals in the +I or +II oxidation state and various uses thereof.

Doped semiconductor nanocrystals, method for preparing same and uses thereof

The invention relates to a method for preparing a material made of silicon and/or germanium nanowires, comprising the steps of:

Method for preparing silicon and/or germanium nanowires

A method for producing a material based on silicon nanowires is provided. The method includes the steps of: i) bringing into contact, in an inert atmosphere, a sacrificial support based on a halogenide, a carbonate, a sulfate or a nitrate of an alkali metal, an alkaline earth metal or a transition metal having metal nanoparticles, with the pyrolysis vapours of a silicon source having a silane compound, by which silicon nanowires are deposited on the sacrificial support; and optionally ii) eliminating the sacrificial support and recovering the silicon nanowires produced in step ii).

Method for producing silicon nanowires

The present invention relates to a method for depositing nanoparticles (NPs) on a nanostructured metal oxide (NSMO) substrate, characterized in that it comprises the steps of: The invention also relates to a stack comprising a nanostructured metal oxide substrate covered with nanoparticles by way of a bifunctional coupling agent carrying a first function, this first function being a phosphonic function and forming a bond with the NSMO, and a second function that is intended to form a bond with a nanoparticle. The invention is applicable to the field of microelectronics and especially to the production of electrodes and the production of photovoltaic panels.

Method for depositing nanoparticles on a nanostructured metal oxide substrate

The invention relates to a process for the non-covalent coating of a support by a hybrid organic/inorganic film, characterized in that it comprises the steps of: &#x2014;depositing a conjugated organic polymer comprising organic groups of X type onto the support; depositing nanoparticles comprising one or more organic groups of Y type onto the support, and in that the groups of X and Y types are capable of developing hydrogen-type bonds between themselves. Typically, the deposition steps are repeated, generally alternately, until the desired thickness for the film is obtained. The deposition may be carried out on the whole of the support or on one part of the latter only.

Thin films of conjugated polymers containing inorganic nanoparticles and process for the manufacture thereof

The present invention comprises a method for preparing a nanocrystal having (i) a core comprising a semiconductor comprising A representing a metal or metalloid in the +III oxidation state and B representing an element in the &#x2212;III oxidation state, coated with (ii) a shell in which the outer portion comprises a semiconductor having the formula ZnSE, where E represents an element in the &#x2212;II oxidation state and x is a decimal number such that 0&#x2266;x&#x3c;1, said method comprising a step consisting of heating a mixture of at least one precursor of A, at least one precursor of B, at least one precursor of zinc, at least one precursor of sulphur and, optionally, at least one precursor of E, from a temperature Tto a temperature Tgreater than Tin an increasing manner and so as to form, firstly, said core then said shell. The present invention also concerns a nanocrystal obtainable by the invention method and uses thereof.

Method of preparing luminescent nanocrystals, the resulting nanocrystals and uses thereof

Luminescent material consisting of nanocrystals comprising a core surrounded by a shell, said core consisting of a nanocrystal of semiconductor of formula AB in which A represents a metal or a metalloid in oxidation state (II) and B represents a chemical element in oxidation state (VI), and said shell consisting of a ZnSe layer whose surface is provided with an organic passivation layer consisting of at least one primary amine combined with at least one phosphine oxide and/or phosphine selenide compound. The invention relates in particular to nanocrystals with a CdSe core, these being covered by a ZnSe shell. The invention furthermore relates to a method of preparing these materials.

Luminescent materials consisting of nanocrystals with core/shell structure and method for preparing same

Nanocrystal comprising an inorganic core consisting of least one metal and/or at least one semi-conductor compound comprising at least one metal, the external surface of said nanocrystal being provided with an organic coating layer, consisting of at least one ligand compound of formula (I):X&#x2014;Y-Z&#x2003;&#x2003;(I) Their methods of manufacture.

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Saint Egreve, France

Peter Reiss