Formula (I) Organic Semiconductor Composition for Voltage Stability
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Solution Overview
Problem
Existing organic semiconductor materials and devices suffer from inadequate operating voltage stability over time, necessitating improved characteristics of compounds within the semiconductor layers to enhance performance.
Innovation Solution
Incorporation of a compound of formula (I) in the organic semiconductor layer, specifically designed with certain alkyl, alkoxy, and aryl substitutions, and a specific LUMO level, to balance hole and electron injection, thereby stabilizing the operating voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic semiconductor materials are used, then device structure and composition are simple, but operating voltage stability deteriorates over time
Solution Approach 1:
The patent applies parameter changes by systematically modifying the chemical structure of organic semiconductor compounds through varying substituents (Ar groups, R groups) and molecular configurations to achieve different LUMO levels and charge transport properties. This resolves the contradiction by finding optimal molecular parameters that provide both voltage stability and controlled complexity
Solution Approach 2:
The patent employs composite materials by combining different organic semiconductor compounds with complementary properties within the same device layers. This allows achieving stable operating voltage through synergistic effects of multiple compounds while managing individual compound complexity
2Reliability
If compound characteristics are optimized for voltage stability, then operating voltage stability improves, but manufacturing complexity increases
Solution Approach 1:
The patent modifies molecular parameters such as substituent types and positions to achieve target LUMO levels and charge balance properties. This systematic parameter optimization provides voltage stability while establishing可循 synthesis routes that balance manufacturing feasibility
Solution Approach 2:
The patent introduces specific functional groups and molecular features beyond basic requirements to achieve superior voltage stability. This partial excessive action in molecular design provides performance benefits while maintaining synthesis routes that are not overly complex
3Productivity
If hole and electron injection are heavily balanced, then device efficiency improves, but device complexity increases
Solution Approach 1:
The patent achieves charge balance by adjusting molecular parameters of semiconductor compounds, including HOMO/LUMO energy levels and charge carrier mobility characteristics. This resolves the contradiction by obtaining efficiency improvements through material parameter optimization rather than adding complex device structures
Solution Approach 2:
The patent develops organic semiconductor compounds that simultaneously perform multiple functions: charge transport, charge balance, and voltage stabilization. This multi-functionality achieves high device efficiency without requiring additional complex layers or structures
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 of formula (I) enhances operating voltage stability and improves the performance of organic electronic devices by optimizing the balance of hole and electron injection, leading to superior device longevity and efficiency.
Implementation Method 1
The holes and electrons recombine in the EML to generate excitons. When the excitons drop from an excited state to a ground state, light is emitted.
Implementation Method 2
When the excitons drop from an excited state to a ground state, light is emitted
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to an organic electronic device comprising a semiconductor layer which comprises a compound of formula (I).