Organic Light Emitting Device Compound for Efficiency and Lifetime
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Solution Overview
Problem
There is a continuous need for new materials in organic light emitting devices to enhance efficiency, reduce driving voltage, and improve lifetime characteristics.
Innovation Solution
A novel compound, as defined by Chemical Formula 1, is used in the organic light emitting device as a material for layers such as hole injection, hole transport, light emitting, electron transport, or electron injection, which can be incorporated into the device's structure to improve performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic materials are used in organic light emitting devices, then the device structure is simple, but the efficiency is low and lifetime characteristics are poor
Solution Approach 1:
The patent employs composite organic materials with specific molecular structures (containing electron-donating groups like carbazole, triphen胺, or triphen胺ine coupled with electron-withdrawing groups like fluorinated aromatic rings or cyano groups) to achieve both high efficiency and improved lifetime characteristics. The composite structure allows synergistic effects that simultaneously enhance device performance and stability without requiring complex multilayer architectures.
Solution Approach 2:
The invention modifies key molecular parameters of organic materials including HOMO-LUMO energy levels, electron mobility, and molecular weight to optimize device performance. By adjusting these parameters through systematic molecular design (e.g., introducing fluorine atoms at specific positions, varying chain lengths), the patent achieves high efficiency and long lifetime while maintaining material processability.
2Productivity
If conventional organic materials are used in organic light emitting devices, then manufacturing is easier, but efficiency and lifetime characteristics are insufficient
Solution Approach 1:
The patent optimizes molecular weight and side chain structures of organic materials to balance processability with performance. By controlling parameters such as glass transition temperature and solubility through molecular design, the invention enables efficient solution processing while achieving high device efficiency and lifetime characteristics.
3Productivity
If new organic materials are developed to improve efficiency, then device performance increases, but material complexity increases
Solution Approach 1:
The patent uses systematically designed composite organic materials where complex functionality is achieved through modular molecular building blocks. Rather than creating entirely new complex structures, the invention combines known functional groups (electron-donating and electron-withdrawing units) in specific arrangements to achieve high efficiency with controlled complexity that remains amenable to synthesis and processing.
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 compound enhances the efficiency and reduces the driving voltage of the organic light emitting device while improving its lifetime characteristics, making it suitable for various layers within the device.
Implementation Method 1
an organic light emitting phenomenon refers to a phenomenon where electric energy is converted into light energy by using an organic material
Data Source
AI summary
Provided is a compound of Chemical Formula 1:wherein in Chemical Formula 1: L is a substituted or unsubstituted C6-60 arylene; L1 is a single bond or a substituted or unsubstituted C6-60 arylene; Ar1 is any one substituent of the following:X is O or S; Ar2 is a substituted or unsubstituted C6-60 aryl; each R is independently hydrogen or deuterium; n1 is an integer of 0 to 9; and n2 is an integer of 0 to 9, and an organic light emitting device including the same.