Condensed Cyclic Compound for OLED Electron Mobility
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Solution Overview
Problem
Current organic light-emitting devices face limitations in achieving high luminance and efficiency due to challenges in electron mobility and dipole moment, which affect their performance and lifespan.
Innovation Solution
A condensed cyclic compound represented by Formula 1 is introduced, which includes a core structure with a hetero ring that increases electron transport capability and π-π orbital interaction, enhancing electron mobility and luminance efficiency when used in the organic light-emitting device's electron transport region or emission layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional organic light-emitting devices are used, then device structure is simple, but luminance and efficiency are limited due to poor electron mobility
Solution Approach 1:
The patent modifies molecular parameters by introducing a condensed cyclic core structure with hetero rings (X1=O or S, Y1=C(R9) or N, Y2=C(R10) or N) and specific substituent groups (L1, Ar1) to enhance electron mobility and dipole moment, directly improving luminance efficiency without compromising device structure
Solution Approach 2:
The patent employs composite molecular design by combining the condensed cyclic core structure with various substituent groups (L1 selected from carbocyclic, heterocyclic, or functional groups like S(=O)(Q1), P(=O)(Q1), and Ar1 selected from cycloalkyl, heterocycloalkyl, aryl, heteroaryl groups) to create materials with optimized electron transport properties
2Duration of action of stationary object
If conventional organic light-emitting devices are used, then device complexity is low, but lifespan is limited due to insufficient electron transport capability
Solution Approach 1:
The patent changes molecular parameters by incorporating hetero rings (X1, Y1, Y2) and functional groups (L1, Ar1) that increase electron mobility and dipole moment, thereby extending device lifespan through improved electron transport capability despite increased molecular complexity
Solution Approach 2:
The patent segments the molecular structure into distinct functional components: the condensed cyclic core (X1, Y1, Y2) for electron transport, L1 groups for electronic properties modulation, and Ar1 groups for structural stability, allowing optimization of each segment for specific functions
3Productivity
If conventional organic light-emitting devices are used, then manufacturing is simple, but efficiency is limited due to poor π-π orbital interaction
Solution Approach 1:
The patent optimizes molecular parameters by designing the condensed cyclic core structure with specific hetero rings and substituent groups (L1, Ar1) to enhance π-π orbital interaction and electron mobility, improving luminance efficiency while maintaining reasonable synthetic accessibility through modular molecular design
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 the condensed cyclic compound results in an organic light-emitting device with improved luminance, efficiency, and extended lifespan by increasing electron mobility and dipole moment, leading to enhanced performance.
Implementation Method 1
A condensed cyclic compound represented by Formula 1 is introduced, which includes a core structure with a hetero ring that increases electron transport capability and π-π orbital interaction, enhancing electron mobility
Implementation Method 2
The use of the condensed cyclic compound results in an organic light-emitting device with improved luminance, efficiency, and extended lifespan by increasing electron mobility and dipole moment
Implementation Method 3
Carriers, such as holes and electrons, may recombine in the emission layer to produce excitons. The excitons may transition from an excited state to a ground state, thus generating light
Data Source
AI summary
A condensed cyclic compound represented by Formula 1 and an organic light-emitting apparatus including the same.