Photosensitive Quantum Dot Pattern Formation via Photopolymerization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for synthesizing quantum dots using chemical wet-etching result in dispersion in organic solvents, making it challenging to form thin films and patterns for electronic devices, as they require development of thin film technology and pattern formation techniques.
Innovation Solution
A photosensitive quantum dot with silicon-based moieties and functional groups is developed, allowing for the creation of a composition that includes a photoinitiator and solvent, enabling the formation of a quantum dot-containing pattern through light exposure and development, resulting in a photo-cured product with improved resolution and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If quantum dots are synthesized using chemical wet-etching method, then quantum dots of various sizes can be homogeneously synthesized, but they are dispersed in organic solvents making it difficult to form thin films and patterns
Solution Approach 1:
The patent changes the chemical composition parameters of the quantum dot surface by introducing photosensitive functional groups (acrylate, epoxy, or oxetane groups) and silicon-based moieties. This transformation allows the quantum dots to participate in photopolymerization reactions, enabling them to form stable thin films and patterns when exposed to light, thus resolving the contradiction between size uniformity and ease of thin film formation
Solution Approach 2:
The patent creates a composite structure by combining quantum dots with photosensitive polymer matrices. The quantum dots are embedded in a polymer network formed through photopolymerization of the photosensitive functional groups on the quantum dot surfaces. This composite approach enables the quantum dot-containing composition to form patterned thin films while maintaining the size uniformity of individual quantum dots
2Stability of the object's composition
If quantum dots are dispersed in organic solvents, then quantum dots can be synthesized and maintained, but additional thin film technology and pattern formation methods are required for electronic device applications
Solution Approach 1:
The patent merges the quantum dot stabilization function with the thin film formation function by incorporating photosensitive functional groups directly onto the quantum dot surfaces. The same molecular structures that stabilize the quantum dots in solution also enable photopolymerization to form thin films. This eliminates the need for separate thin film formation processes, reducing overall process complexity while maintaining dispersion stability
Solution Approach 2:
The quantum dot surface modifications provide multiple functions simultaneously: the silicon-based moieties and photosensitive functional groups (acrylate, epoxy, or oxetane) both stabilize the quantum dots in organic solvents and enable photopolymerization for thin film and pattern formation. This multi-functionality reduces the number of separate processes needed, simplifying the overall manufacturing workflow for electronic devices
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 approach allows for the formation of precise and stable quantum dot-containing patterns with enhanced light emitting efficiency and durability, suitable for use in electronic devices, by utilizing the photosensitive functional groups for crosslinking and curing reactions.
Implementation Method 1
a plurality of photosensitive moieties, each including silicon (Si) and a photosensitive functional group, are bound to a surface of the quantum dot
Implementation Method 2
quantum dots having a size of about several nanometers have unique properties such as, for example, quantum effects. Quantum dots of this size are known to be used in semiconductor structures for producing highly efficient light emitting devices
Data Source
AI summary
A photosensitive quantum dot including a quantum dot, and a plurality of photosensitive moieties that are bound to a surface of the quantum dot, wherein each of the photosensitive moieties includes silicon (Si) and a photosensitive functional group. Also disclosed are a composition for forming a quantum dot-containing pattern, where the composition includes the photosensitive quantum dot, and a method of forming a quantum dot-containing pattern using the composition.