Quantum dot and method for producing the same

Abstract

A Cd-free chalcopyrite-based quantum dot with a narrow fluorescence FWHM and a high fluorescence quantum yield. The quantum dot contains ZnAgInxGa1-xSySe1-y (0≤x<1 and 0≤y≤1), and exhibits fluorescence properties that can include a fluorescence full width at half maximum of less than or equal to 33 nm, and a fluorescence quantum yield of greater than or equal to 70% in a green wavelength range to a red wavelength range. The quantum dot has a core-shell structure including a core and a shell covering the core, and the shell preferably contains Zn.

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