Patent ID: 11912920
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H  B | IPC B  C  H

Claim 19:
20. A method of producing the quantum dot population of claim 14, comprising
preparing the semiconductor nanocrystal core comprising indium, zinc, and phosphorus;
reacting a zinc shell precursor with a selenium precursor and a sulfur precursor, or a combination thereof in the presence of the semiconductor nanocrystal core and a first organic ligand to form a semiconductor nanocrystal shell comprising zinc, selenium, and sulfur disposed on the semiconductor nanocrystal core;
wherein the preparing of the semiconductor nanocrystal core comprises preparing an indium precursor solution by heating an indium compound in the presence of a second organic ligand and an organic solvent;
optionally heating the indium precursor solution; and
mixing the indium precursor solution with a phosphorus precursor and a zinc core precursor, simultaneously or sequentially, and performing a reaction at a reaction temperature,
wherein the amount of the indium precursor solution, the phosphorous precursor, and the zinc core precursor are adjusted to obtain the core-shell quantum dots having the mole ratio of phosphorus to indium of greater than or equal to 0.75:1 and less than or equal to 1.5:1, and the mole ratio of zinc to indium of greater than or equal to 35:1 and less than or equal to 60:1.