A method of manufacturing a quantum dot, the method including: mixing of a Group II precursor and a Group III precursor in a solvent to prepare a first mixture; heating the first mixture at a temperature of about 200°C to about 350°C; adding a Group V precursor and a Group VI precursor to the first mixture while maintaining the first mixture at the temperature of about 200°C to about 350°C to prepare a second mixture; and maintaining the second mixture at the temperature of about 200°C to about 350°C to form a quantum dot.
