Acrylate Quantum Dot Composition UV Stability
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Solution Overview
Problem
Existing compositions for quantum dots lack high quantum efficiency, heat resistance, and UV stability, making them unsuitable for various optical devices that require efficient light emission and durability.
Innovation Solution
A curable composition combining acrylate and quantum dots, where the acrylate enhances dispersion stability, quantum efficiency, and UV stability, and can be adjusted for refractive index, allowing for the creation of high-performance optical materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional compositions are used with quantum dots, then the quantum efficiency, heat resistance, and UV stability are insufficient, but using specialized curable compositions with specific acrylates improves these properties
Solution Approach 1:
The patent applies parameter changes by carefully controlling the functional group content of acrylates (5-50 wt% of total acrylate) and the ratio of single-functional to multi-functional acrylates. These parameter optimizations enable high quantum efficiency (90% or more) and excellent UV stability without excessive formulation complexity
Solution Approach 2:
The patent uses composite materials by combining quantum dots with specific acrylate compositions including single-functional acrylates (for quantum efficiency) and multi-functional acrylates (for crosslinking and UV stability). This composite approach achieves superior heat resistance and UV stability while maintaining manageable formulation complexity
2Reliability
If the acrylate content is increased to improve quantum efficiency and UV stability, then the refractive index control becomes more difficult, but proper acrylate selection allows simultaneous optimization
Solution Approach 1:
The patent applies local quality by selecting specific acrylate types with appropriate functional groups for different purposes: single-functional acrylates (acryloyl groups) for enhancing quantum dot dispersion and efficiency, and multi-functional acrylates for crosslinking and UV stability. This localized functional assignment allows simultaneous optimization of quantum efficiency, UV stability, and refractive index control
Solution Approach 2:
The patent uses parameter changes by adjusting the functional group content (5-50 wt%) and the ratio of single-functional to multi-functional acrylates to achieve the desired refractive index while maintaining high quantum efficiency and UV stability. This parameter optimization enables concurrent improvement of multiple properties
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The curable composition achieves high quantum efficiency, excellent UV stability, and heat resistance, making it suitable for applications in lighting and display devices, such as LEDs, with improved color rendering and optical transmission properties.
Implementation Method 1
The acrylate may enhance the dispersion stability of the quantum dot to increase the quantum efficiency of the quantum dot
Implementation Method 2
when the light having a wavelength with energy higher than the energy band gap strikes the surface of a quantum dot, the quantum dot absorbs the light, becomes excited, emits a light of a specific wavelength and then returns to the ground state
Implementation Method 3
A curable composition comprising an acrylate and a quantum dot
Data Source
AI summary
The present invention provides a curable composition comprising an acrylate and a quantum dot, and a device using the same. Since the luminous efficiency and dispersion of a quantum dot are excellent and the curable composition has remarkable UV stability and heat resistance, the curable composition can be effectively applied to various forms of light emitting devices.