| abstract |
The invention provides III-V group quantum dots, a preparation method and applications thereof. The preparation method includes: S1, mixing group III element precursors, solvents, surfactants, and group III-V quantum dot seeds to obtain a mixed system; S2, heating the mixed system to a first temperature; and S3, heating the mixed system to a temperature of Group V element precursors are added to the mixed system at the first temperature to obtain Group III-V quantum dots, wherein the Group III-V quantum dot crystal seeds have carboxylic acid ligands, and the surfactant is acetylacetone or derivatives of acetylacetone compounds or compounds with carboxylic acid groups RCOOH, the first temperature is between 120°C and 200°C. The above reaction temperature is controlled above 120 °C, and the seed crystal provides a nucleation site, because the energy barrier of self-nucleation is higher than that of growth on the seed crystal, so the nucleation and growth can be separated, which in turn benefits the III-V group The growth of quantum dots affects the particle size distribution. |