Novel Organic Compound for High Luminous Efficiency and Stability
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Solution Overview
Problem
Current organic electronic elements face challenges in achieving high luminous efficiency, stability, and lifespan due to issues like intermolecular interactions and metal oxide penetration, which affect color purity and efficiency, and there is a need for materials that can withstand Joule heating and have optimal energy level combinations for long-term performance.
Innovation Solution
A novel compound is introduced, represented by Formula (1), which is used in the organic electronic element to enhance luminous efficiency, reduce driving voltage, and improve heat resistance, thereby increasing color purity and lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a host/dopant system is used to increase color purity and luminous efficiency, then color purity and energy transfer efficiency are improved, but device complexity increases due to multi-material layer composition
Solution Approach 1:
The patent extracts and eliminates the need for separate host and dopant materials by developing a single organic compound that inherently provides both the host matrix functionality and the dopant emission characteristics. This single compound approach maintains high color purity while removing the complexity of multi-material systems.
Solution Approach 2:
The invented organic compound serves multiple functions simultaneously: it acts as both the host material and the emitting dopant, providing structural support, energy transfer, and light emission in a single material. This multi-functionality resolves the contradiction by eliminating the need for separate host/dopant layers while maintaining color purity.
2Use of energy by moving object
If efficiency is increased to reduce driving voltage, then power consumption is reduced, but material stability against Joule heating becomes more challenging
Solution Approach 1:
The patent modifies the molecular structure parameters of the organic compound, specifically incorporating rigid cyclic groups and optimizing molecular weight, to enhance thermal stability. These parameter changes allow the material to withstand Joule heating at lower driving voltages, resolving the contradiction between efficiency improvement and thermal stability.
Solution Approach 2:
The invented compound combines multiple functional moieties within a single molecular structure, creating a composite-like material that integrates the stability of rigid structures with the emissive properties of organic compounds. This internal composite structure provides both efficiency and thermal resistance.
3Duration of action of stationary object
If metal oxide penetration from anode is delayed to extend lifespan, then device reliability is improved, but deposition process complexity increases
Solution Approach 1:
The patent incorporates protective functional groups and stable molecular structures into the organic compound design beforehand, creating an inherent barrier against metal oxide penetration. This preliminary structural protection extends device lifespan without requiring complex multi-step deposition processes or additional protective layers.
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 novel compound significantly improves luminous efficiency, reduces driving voltage, and enhances heat resistance, leading to improved color purity and extended lifespan of the organic electronic element.
Implementation Method 1
excitons generated in the emitting layer are transported to the dopant to emit light with high efficiency
Implementation Method 2
organic light emitting phenomenon refers to a phenomenon that converts electric energy into light energy by using an organic material
Implementation Method 3
organic light emitting phenomenon refers to a phenomenon that converts electric energy into light energy by using an organic material
Implementation Method 4
stable characteristics against Joule heating generated during device driving
Data Source
AI summary
The present invention provides a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic element using the same, and an electronic device thereof, wherein the compound is represented by Formula (1):wherein:A is a substituent represented by Formula (A-1)-(A-2);