Quantum dot and manufacturing method for the same
AssigneeNs Materials Inc.
InventorsSoichiro Nikata, Yuko Ogura, Mikihiro Takasaki, Yuka Takamizuma
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Abstract
An object is to provide a quantum dot that has a narrow fluorescence half-width and a high fluorescence quantum yield, and emits blue fluorescence. A quantum dot (5) according to the present invention includes at least Zn and Se and does not include Cd, and has a particle diameter of 5 nm or more and 20 nm or less. In addition, the quantum dot (5) according to the present invention includes at least Zn and Se and does not include Cd, and has a fluorescence quantum yield of 5% or more and a fluorescence half-width of 25 nm or less. In the present invention, the fluorescence lifetime can be made 50 ns or less.
Claims6
A quantum dot comprising a core-shell structure including a core and a shell,
- wherein the core includes Zn and Se,
- wherein the shell comprises ZnS,
- wherein the quantum dot does not include Cd,
- wherein a particle diameter is 5 nm or more and 20 nm or less, and
- wherein a fluorescence lifetime of the quantum dot is 30 ns or less.
A quantum dot comprising a core-shell structure including a core and a shell,
- wherein the core includes Zn and Se,
- wherein the shell comprises ZnS,
- wherein the quantum dot does not include Cd,
- wherein a fluorescence quantum yield of the quantum dot is at least 60%,
- wherein a fluorescence half-width of the quantum dot is 25 nm or less, and
- wherein a fluorescence lifetime of the quantum dot is 30 ns or less.
Dependencies are inferred from the claim text.