Abstract: A method is disclosed for synthesis of nanoparticles of metal selenide, metal selenide alloys, metal chalcogenide comprising at least selenium or metal chalcogenide alloys comprising at least selenium. The method comprises obtaining a heterogeneous dispersion of powder at least selenium in a first solvent at a first temperature, the first temperature being such that the heterogeneous dispersion comprises at least a fraction of undissolved powder in the solvent. The method also comprises introducing the heterogeneous dispersion into a second solvent containing a metal cation precursor, the second solvent being at a second temperature higher than said first temperature allowing, upon introduction of the heterogeneous dispersion, dissolution of at least the fraction of the power resulting in nucleation of the nanoparticles. The method results in efficient and easy production of nanoparticles.

Abstract: A method is disclosed for synthesis of nanoparticles of metal selenide, metal selenide alloys, metal chalcogenide comprising at least selenium or metal chalcogenide alloys comprising at least selenium. The method comprises obtaining a heterogeneous dispersion of powder at least selenium in a first solvent at a first temperature, the first temperature being such that the heterogeneous dispersion comprises at least a fraction of undissolved powder in the solvent. The method also comprises introducing the heterogeneous dispersion into a second solvent containing a metal cation precursor, the second solvent being at a second temperature higher than said first temperature allowing, upon introduction of the heterogeneous dispersion, dissolution of at least the fraction of the power resulting in nucleation of the nanoparticles. The method results in efficient and easy production of nanoparticles.