CPC C09K 11/70 (2013.01) [C08F 220/382 (2020.02); C09K 11/025 (2013.01); C09K 11/88 (2013.01); C09K 11/883 (2013.01); H01L 33/005 (2013.01); H01L 33/502 (2013.01); B82Y 20/00 (2013.01); H01L 2933/0025 (2013.01); H01L 2933/0041 (2013.01)] | 21 Claims |
1. Quantum dots each comprising
a semiconductor nanocrystal core comprising indium, phosphorous, and optionally zinc,
a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the semiconductor nanocrystal shell comprising zinc, selenium, and sulfur,
wherein the quantum dots are configured to exhibit a maximum photoluminescence peak in a green light wavelength region, and in an ultraviolet-visible absorption spectrum of the quantum dots, a ratio A450/Afirst, of an absorption value at 450 nanometers to an absorption value of a first absorption peak is greater than or equal to about 0.7, and a valley depth (VD) defined by the following equation is greater than or equal to about 0.4:
(Absfirst−Absvalley)/Absfirst=VD
wherein, Absfirst is the absorption value of the first absorption peak wavelength, and Absvalley is an absorption value at a lowest point of the valley adjacent to the first absorption peak, and
wherein the maximum photoluminescence peak of the quantum dots has a full width at half maximum of less than or equal to 40 nanometers.
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