Organic Light-Emitting Layer With Dual Hosts for Efficiency and Lifespan
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Solution Overview
Problem
There is a need for the development of new materials for the organic materials used in organic light emitting devices to enhance efficiency and stability.
Innovation Solution
An organic light emitting device is provided with a light emitting layer comprising a first compound and a second compound, each represented by specific chemical formulas, which serve as host materials, improving efficiency, driving voltage, and lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new organic materials are developed for the light emitting layer, then efficiency and stability are improved, but device complexity increases
Solution Approach 1:
The patent uses composite materials by combining two different organic compounds (first compound and second compound) in the light emitting layer. Each compound contributes different properties, and their combination achieves improved efficiency and stability while maintaining a manageable device structure through defined chemical formulas and structural relationships.
2Productivity
If multiple compounds are used in the light emitting layer, then efficiency and lifespan are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by carefully controlling the structural parameters of the organic compounds (substituent groups, ring structures, molecular weights) and their composition ratios in the light emitting layer. This allows optimization of efficiency and lifespan while maintaining manufacturability through systematic parameter control rather than arbitrary material selection.
3Power
If complex organic materials are used to improve performance, then driving voltage and efficiency are improved, but material stability may deteriorate
Solution Approach 1:
The patent applies local quality by designing compounds with specific functional groups and structural features in different regions of the molecule. The first and second compounds have distinct structural characteristics that locally optimize electron transport, hole transport, and exciton management, achieving improved driving voltage and efficiency while maintaining overall material stability through complementary local 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 inclusion of the two host compounds in the light emitting layer enhances efficiency, driving voltage, and extends the lifespan of 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
Figure 1~2
AI summary
The present disclosure provides an organic light emitting device.