OLED Organic Material Composition for Low-Voltage Longer-Life Emission
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Solution Overview
Problem
There is a need for new materials in organic light emitting devices to enhance efficiency, reduce driving voltage, and improve lifetime characteristics.
Innovation Solution
A novel compound represented by Chemical Formula 1 is introduced, which can be used as a material for organic material layers in organic light emitting devices, serving as a hole injection, hole transport, light emitting, electron transport, or electron injection material, improving device efficiency and lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic materials are used in organic light emitting devices, then device structure and operation are maintained, but efficiency is insufficient, driving voltage is high, and lifetime is limited
Solution Approach 1:
The patent modifies the molecular structure of organic compounds by changing chemical parameters - specifically introducing compounds with specific heteroatom compositions (X is O or S), defined structural parameters (m and n values), and particular substituent groups (Ar1-Ar4, A groups). These parameter changes in the molecular structure result in improved charge transport properties, reduced driving voltage, and enhanced device efficiency without compromising operational functionality
Solution Approach 2:
The invention employs composite organic material structures combining multiple functional groups within a single molecule - integrating hole injection capabilities, hole transport functions, and light emitting properties in unified compound structures. This composite approach allows simultaneous optimization of multiple device performance parameters including efficiency, voltage, and lifetime characteristics
2Duration of action of stationary object
If conventional organic materials are used in organic light emitting devices, then basic device functionality is maintained, but lifetime characteristics are insufficient
Solution Approach 1:
The patent extends device lifetime by modifying molecular stability parameters through specific structural design - using stable heteroatom cores (O or S), defining precise substitution patterns (m and n values of 0 or 1), and selecting stable aromatic substituent groups (C6-60 aryl or C2-60 heteroaryl). These parameter changes enhance molecular robustness and resistance to degradation, directly improving device operational lifetime while maintaining functional reliability
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 improves the efficiency and extends the lifetime of organic light emitting devices by reducing driving voltage and enhancing molecular stability, as demonstrated in the organic light emitting devices manufactured with it.
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
A compound of the following Chemical Formula 1, and an organic light emitting device including the same.