Patent ID: 8658439

Claim:
A method of preparing a quantum dot phosphor, comprising: dispersing quantum dots in a dispersion solvent to form dispersed quantum dots, wherein the quantum dots are Group II-VI compound semiconductor nanocrystals or a mixture of the Group II-VI compound semiconductor nanocrystals, or are Group III-V compound semiconductor nanocrystals or a mixture of the Group III-V compound semiconductor nanocrystals; and wherein the Group II-VI compound semiconductor nanocrystals are selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe and HgTe, and the Group III-V compound semiconductor nanocrystals are selected from the group consisting of GaN, GaP, GaAs, AlN, AlP, AlAs, InN, InP and InAs, and the dispersion solvent is selected from the group consisting of chloroform, toluene, octane, heptane, hexane, pentane, dimethylchloride, tetrahydrofuran, methanol, ethanol, propanol, butanol, and mixtures thereof; mixing the dispersed quantum dots with a solid substrate, to prepare a mixture; evaporating the dispersion solvent from the mixture while mixing the quantum dots with the solid substrate to obtain quantum dots supported on the solid substrate; and drying the quantum dots supported on the solid substrate to remove the dispersion solvent therefrom.