PROCESS FOR MANUFACTURING COLLOIDAL NANOSHEETS BY LATERAL GROWTH OF NANOCRYSTALS

摘要

A process for manufacturing a colloidal nanosheet by lateral growth, on an initial colloidal nanocrystal, of a crystalline semiconductor material represented by the formula MnXy, M being a transition metal and X a chalcogen, the process comprising the following steps: the preparation of a first organic solution that is not coordinating or is weakly coordinating, constituting a synthesis solvent and containing said initial colloidal nanocrystal; the preparation of a second organic solution containing precursors of M and of X and additionally containing an acetate salt; and the gradual introduction, over a predetermined duration, of a predetermined quantity of the second solution into a predetermined quantity of the first solution, at a predetermined temperature T for the growth of the nanosheet. The use of the material obtained is also presented.