Quantum dot having a phosphorus precursor in a multi-component core

A method of producing a quantum dot having a multi-component core, comprising:

• forming the multi-component core,
• wherein the forming the multi-component core comprises
• reacting an indium precursor with a phosphorus precursor at a first reaction temperature in an organic solvent in the presence of an organic ligand to form first particles comprising a first semiconductor nanocrystal, the first semiconductor nanocrystal comprising indium and phosphorus;
• adding a zinc precursor to the first particles at a temperature equal to or less than the first reaction temperature to form a zinc-containing coating on a surface of the first particles, whereby providing a reaction system that comprises second particles on which the zinc-containing coating is formed;
• and
• adding a gallium precursor and a phosphorus precursor to the reaction system that comprises the second particles while heating the reaction system to a second reaction temperature to form a second semiconductor nanocrystal on the second particles to obtain a multi-component core, whereby producing the quantum dot having the multi-component core,
• wherein the second reaction temperature is higher than the first reaction temperature,
• wherein the quantum dot emits green light, and
• wherein in the quantum dot a mole ratio of phosphorus relative to indium is greater than or equal to about 0.6:1 and less than or equal to about 1.0:1, and a mole ratio of phosphorus relative to a sum of indium and gallium is greater than or equal to about 0.5:1 and less than or equal to about 0.8:1.