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US 12,139,653 B2Granted
Metal halide colloidal nanoparticles and method for producing the same
AssigneeChung Ang University Industry Academic Cooperation Foundation
InventorsTae Jong Paik, Min Ji Lee
Life of this patent
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Abstract
The present invention relates to metal halide colloidal nanoparticles represented by a following Chemical Formula 1 and a method for producing the same: A3MX6 [Chemical Formula 1] wherein in the Chemical Formula 1, A is an alkali metal element, M is a rare-earth metal element, and X is a halogen element.
Claims16
Metal halide colloidal nanoparticles represented by the following Chemical Formula 1:
- A3MX6 [Chemical Formula 1]
- wherein in the Chemical Formula 1, A is an alkali metal element, M is a rare-earth metal element, and X is a halogen element,
- wherein the metal halide colloidal nanoparticles absorb an excitation wavelength in a range of 250 to 320 nm and thus emit light in a light-emission spectrum of 500 to 570 nm or 580 to 630 nm, and
- wherein the metal halide colloidal nanoparticles absorb an excitation wavelength in a range of 320 to 450 nm and thus emit light in a light-emission spectrum of 380 to 480 nm.
1 more element
A method for producing metal halide colloidal nanoparticles, the method comprising:
- (a) preparing a mixed solution including R1COOH, R2NH2, R2R3NH, or R2R3R4N, and a first non-polar solvent,
- wherein R1, R2, R3 and R4 are the same as or different from each other, and each of R1, R2, R3 and R4 independently represents a saturated or unsaturated alkyl group having 2 to 28 carbon atoms;
- (b) adding an alkali metal precursor and a rare-earth metal precursor to the mixed solution and stirring the mixed solution to produce a stirred solution;
- and
- (c) reacting the stirred solution to produce metal halide colloidal nanoparticles represented by a following Chemical Formula 1,
- A3MX6 [Chemical Formula 1]
- wherein in the Chemical Formula 1, A is an alkali metal element, M is a rare-earth metal element, and X is a halogen element.
4 more elements
Dependencies are inferred from the claim text.