OLED Organic Compound Composition for Easier Purification
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Solution Overview
Problem
Existing organic electroluminescent elements face limitations in luminescence efficiency and service life, particularly in phosphorescent materials due to efficiency roll-off and the use of expensive raw materials, and traditional thermally activated delayed fluorescence (TADF) materials have limited performance improvements.
Innovation Solution
Introduce large groups such as alkyl silicon and dibenzofuran into the phenyl amino of boron nitrogen compounds, or silicon-containing groups like indenocarbazol, indolecarbazol, fluorenecarbazol, triazine, dicarbazolylphenyl, and 2,6-diphenylphenyl groups at the para position of boron, enhancing the purity and molecular structure of organic compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional phosphorescent materials are used to improve luminescence efficiency, then luminescence efficiency is improved, but efficiency roll-off occurs and service life is limited
Solution Approach 1:
The patent applies parameter changes by modifying the molecular structure of organic compounds through introducing large groups (alkyl silicon, dibenzofuran, indenocarbazol, indolecarbazol, fluorenecarbazol, triazine, dicarbazolylphenyl, 2,6-diphenylphenyl) at specific positions. This structural parameter change optimizes the balance between luminescence efficiency and service life, eliminating efficiency roll-off while extending device lifetime.
Solution Approach 2:
The patent uses composite materials by combining boron nitrogen compounds with various large groups (silicon-containing groups, carbazole derivatives, triazine, etc.) to create new organic compounds. These composite molecular structures achieve both high luminescence efficiency and extended service life without the efficiency roll-off problem of traditional phosphorescent materials.
2Use of energy by moving object
If traditional TADF materials are used to improve luminescence efficiency, then some efficiency improvement is achieved, but performance improvement is limited
Solution Approach 1:
The patent achieves breakthrough performance improvement by changing the molecular structure parameters of TADF materials through introducing large groups at specific positions. This structural optimization enables both high luminescence efficiency and fast performance improvement, overcoming the limitations of traditional TADF materials.
3Use of energy by moving object
If organic compounds with complex molecular structures are synthesized to improve luminescence properties, then luminescence efficiency is improved, but purification becomes difficult
Solution Approach 1:
The patent applies local quality by introducing large groups (alkyl silicon, dibenzofuran, carbazole derivatives, etc.) at specific local positions (phenyl amino of boron nitrogen compounds, para position of boron) in the molecular structure. This localized structural modification improves luminescence efficiency while maintaining purification ease through the specific properties of these groups.
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
Improves the purity and luminescence efficiency, extending the service life of organic light-emitting devices by facilitating easier purification and optimizing molecular properties.
Implementation Method 1
the organic material of the organic layer is utilized to convert electrical energy into light energy, thereby realizing an organic electroluminescence
Data Source
AI summary
An organic compound, an organic light-emitting device and a display panel are disclosed herein; the organic compound has a structure as represented by general formula (1) or general formula (2):The present application can make the organic compound easily purified, thereby improving the purity of the organic compound, and further improving a luminescence efficiency and service life of the organic light-emitting device made from the organic compound.