Linked OLED Compound Composition for Low-Voltage, Long-Life Emission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a continuous need for developing new materials to improve the efficiency and stability of organic light-emitting devices.
Innovation Solution
A compound with a structure linking phenanthrofuran or phenanthrothiophene structures through an intermediate linking group L101, which enhances electron and hole transfer, is used in the organic material layer of the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional organic materials are used in the organic material layer, then the device structure can be maintained, but the driving voltage remains high and light-emitting efficiency is insufficient
Solution Approach 1:
The patent modifies the molecular structure parameters of organic materials by introducing specific heterocyclic groups (phenanthrofuran, phenanthrothiophene) and linking groups to change electronic properties, thereby reducing driving voltage while improving light-emitting efficiency through optimized HOMO-LUMO energy levels and charge transport characteristics
Solution Approach 2:
The patent employs composite organic material structures combining electron-donating groups (phenanthrofuran, phenanthrothiophene) with electron-accepting linking groups (L101) to create materials with balanced charge transport properties, achieving both low driving voltage and high light-emitting efficiency through synergistic molecular design
2Duration of action of stationary object
If conventional organic materials are used, then material synthesis is simpler, but service life of the device is shortened
Solution Approach 1:
The patent changes chemical composition parameters by incorporating stable heterocyclic structures (phenanthrofuran, phenanthrothiophene) with high thermal and chemical stability, which inherently extend device service life through improved material durability while the modular molecular design keeps synthesis manageable
3Reliability
If the organic material layer uses multi-layered structure with different materials, then efficiency and stability are improved, but device complexity increases
Solution Approach 1:
The patent designs organic materials with multi-functional molecular structures that simultaneously provide hole transport, electron transport, and exciton management capabilities within single material layers, reducing the need for multiple specialized layers while maintaining device stability through inherent material 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 compound reduces driving voltage, improves light-emitting efficiency, and prolongs the service life of the organic light-emitting device.
Implementation Method 1
which enhances electron and hole transfer
Implementation Method 2
An organic light emission phenomenon generally refers to a phenomenon converting electrical energy to light energy using an organic material
Data Source
AI summary
A compound of Chemical Formula 1:wherein X1 and X2 are the same as or different from each other, and are each independently O or S; n is an integer from 1 to 4, and when n is 2 or higher, the L101s are the same as or different from each other; and the other substituents are as defined in the specification; and an organic light-emitting device including the same. An organic light emitting device using the compound of Chemical Formula 1 can have a low driving voltage, high light emitting efficiency, or a long service life.