| CPC C30B 29/48 (2013.01) [C01G 9/08 (2013.01); C09K 11/02 (2013.01); C09K 11/565 (2013.01); C09K 11/883 (2013.01); H01L 33/06 (2013.01); H01L 33/28 (2013.01); H10K 50/115 (2023.02); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); C01P 2002/85 (2013.01); C01P 2004/04 (2013.01); C01P 2004/64 (2013.01)] | 19 Claims |
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1. Semiconductor nanocrystal particles comprising:
a core comprising a first semiconductor nanocrystal,
a first shell disposed on the core, the first shell comprising a second semiconductor nanocrystal that has a different composition from the first semiconductor nanocrystal, and
a second shell disposed on the first shell, the second shell comprising a third semiconductor nanocrystal that has a different composition from the second semiconductor nanocrystal,
wherein the first semiconductor nanocrystal comprises a Group II-VI compound comprising zinc;
wherein the second semiconductor nanocrystal comprises zinc and selenium;
wherein the third semiconductor nanocrystal comprises zinc and sulfur;
wherein an energy bandgap of the second semiconductor nanocrystal is less than an energy bandgap of the first semiconductor nanocrystal, and the energy bandgap of the second semiconductor nanocrystal is less than an energy bandgap of the third semiconductor nanocrystal;
wherein the semiconductor nanocrystal particles do not comprise cadmium;
wherein the semiconductor nanocrystal particles are configured to emit light having a maximum luminescent peak wavelength in a range between about 400 nanometers and 550 nanometers,
wherein the semiconductor nanocrystal particles are configured to exhibit a quantum efficiency of greater than or equal to about 60%, and
wherein an average size of the semiconductor nanocrystal particles is less than or equal to about 50 nanometers.
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