Organic Electroluminescent Compound for Charge Transport
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Solution Overview
Problem
Current organic electroluminescent devices lack a material that significantly enhances their performance by improving electron and hole transport and recombination efficiency.
Innovation Solution
A compound represented by a specific formula, which includes a 6-membered ring with nitrogen atoms and various substituents, is used in the organic electroluminescent device to improve electron and hole transport and recombination, leading to enhanced device capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional compounds are used in organic EL devices, then the device structure is simple, but the electron and hole transport and recombination efficiency is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of organic compounds through systematic variations in substituents (R1-R10, Ara, Arb) and core structures (L1, L2). This allows optimization of electron and hole transport properties while maintaining manageable structural complexity through controlled molecular design
Solution Approach 2:
The patent employs composite materials by creating organic compounds with multiple functional groups and heteroatoms (nitrogen, oxygen, sulfur) integrated into the molecular structure. These composite molecular structures enable simultaneous electron and hole transport capabilities within a single material system
2Productivity
If conventional materials are used, then the manufacturing process is simple, but the light emission efficiency is insufficient
Solution Approach 1:
The patent applies local quality by introducing specific functional groups and substituents at particular positions within the molecular structure (indicated by R1-R10, Ara, Arb). These localized structural modifications optimize specific properties such as charge transport and light emission at particular regions of the molecule without redesigning the entire structure
Solution Approach 2:
The patent utilizes parameter changes by systematically varying molecular weight, conjugation length, and substituent types to optimize light emission efficiency. The defined parameters (L1, L2, R groups) allow precise control over optical and electrical properties while maintaining structural manageability
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 use of this compound in organic electroluminescent devices results in improved device capability, specifically in electron and hole transport and recombination, resulting in better light emission efficiency.
Implementation Method 1
electrons from the cathode side and holes from the anode side are injected into a light emitting region
Implementation Method 2
electrons from the cathode side and holes from the anode side are injected into a light emitting region
Implementation Method 3
the injected electrons and holes are recombined in the light emitting region to generate an excited state, which then returns to the ground state to emit light
Implementation Method 4
the injected electrons and holes are recombined in the light emitting region to generate an excited state, which then returns to the ground state to emit light
Data Source
AI summary
Provided are: a compound capable of further improving the performance of organic EL devices, an organic electroluminescent device having more improved device performance, and an electronic apparatus including such an organic electroluminescent device. Precisely provided are: a compound represented by the following formula (1):wherein the symbols are as defined in the description, an organic electroluminescent device containing the compound, and an electronic apparatus including such an organic electroluminescent device.