| CPC C09K 11/883 (2013.01) [C09K 11/0883 (2013.01); H10K 50/115 (2023.02); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01)] | 19 Claims |
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1. A quantum dot comprising
a core comprising a first semiconductor nanocrystal comprising a Group III-V compound, and
a shell disposed on the core, the shell comprising a semiconductor nanocrystal comprising a Group II-VI compound,
wherein the quantum dot does not comprise cadmium,
the shell comprises
a first layer disposed directly on the core, the first layer comprising a second semiconductor nanocrystal comprising zinc and selenium, and
a second layer, the second layer being an outermost layer of the shell, the second layer comprising a third semiconductor nanocrystal comprising zinc and sulfur, and
a difference between a peak emission wavelength of a colloidal solution of the quantum dot and a peak emission wavelength of a film prepared from the colloidal solution is less than or equal to about 5 nanometers.
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