Quantum dot and method of producing the same; and wavelength converting member, lighting member, back light unit, and display device using quantum dot
AssigneeNs Materials Inc.
InventorsYuko OGURA, Yuka TAKAMIZUMA, Kazunori IIDA, Emi TSUTSUMI, Masanori TANAKA, Soichiro NIKATA
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Abstract
Provided is a Cd-free blue fluorescent quantum dot with a narrow fluorescence FWHM. The quantum dot does not contain cadmium and its fluorescence FWHIM is 25 nm or less. The quantum dot is preferably a na.nocrystal containing zinc and selenium or zinc and selenium and sulfur. Further, the quantum dot preferably has a core-shell structure in which the nanocrystal serves as a core and the surface of the core is coated with a shell.
Claims15
A quantum dot which does not contain cadmium and has a fluorescence FWHM of 25 nm or less.
A method of producing a quantum dot comprising:
- synthesizing copper chalcogenide as a precursor from an organic copper compound or an inorganic copper compound, and an organic chalcogen compound;
- and synthesizing a quantum dot free of cadmium using the copper chalcogenide precursor.
Dependencies are inferred from the claim text.