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US 2024/0174919 A1Published application
Quantum Dots, Methods For Preparing Quantum Dots, And Electronic Devices
AssigneeDuk San Neolux Co., Ltd.
InventorsHan Byule LIM, Chang Min Lee, Jong Moon Shin, Kyung Soo Kim
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Abstract
An embodiment of the disclosure provides AgInGaS quantum dots, a method for preparing the same, and an electronic device capable of controlling the emission wavelength according to the composition of Ag, In, and Ga precursors constituting a quantum dot core.
Claims9
A quantum dot, comprising:
- a core including Ag, In, Ga, and S;
- and
- a shell including at least one selected from among a group I element or a group III element;
- and a group VI element, on the core, wherein the quantum dot is capable of adjusting an emission wavelength according to a ratio of Ag, In, and Ga precursors defined by Equation 1:
- In
-
- precursor
-
- (
- mol
- )
- Ag
-
- precursor
-
- (
- mol
- )
- +
- Ga
-
- precursor
-
- (
- mol
- )
- =
- X
- [
- Equation
-
- 1
- ]
- in Equation 1,
- 1) The amount of the precursor of each element is 0.1 mmol or more,
- 2) When X is 0.32 or more and less than 0.40, the quantum dot has an emission wavelength of 500 nm to 530 nm, and
- 3) When X is 0.40 or more and less than 0.60, the quantum dot has an emission wavelength of 531 nm to 580 nm.
34 more elements
A method for preparing a quantum dot, the method comprising:
- a core preparing step of preparing a core by injecting and reacting an Ag precursor, an In precursor, a Ga precursor, an S precursor, and a solvent in a first reactor;
- and
- a shell preparing step of preparing a shell by injecting and reacting the prepared core in a second reactor containing at least one selected from among a group I precursor including a group I element or a group III precursor including a group III element and a group VI precursor including a group VI element, wherein the quantum dot is capable of adjusting an emission wavelength according to a ratio of Ag, In, and Ga precursors defined by Equation 1:
- In
-
- precursor
-
- (
- mol
- )
- Ag
-
- precursor
-
- (
- mol
- )
- +
- Ga
-
- precursor
-
- (
- mol
- )
- =
- X
- [
- Equation
-
- 1
- ]
- in Equation 1,
- 1) The amount of the precursor of each element is 0.1 mmol or more,
- 2) When X is 0.32 or more and less than 0.40, the quantum dot has an emission wavelength of 500 nm to 530 nm, and
- 3) When X is 0.40 or more and less than 0.60, the quantum dot has an emission wavelength of 531 nm to 580 nm.
33 more elements
Dependencies are inferred from the claim text.