Organic Semiconductor Compound Formula I for Voltage and Stability
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Solution Overview
Problem
There is a need to improve the performance of organic semiconductor materials and devices, specifically to achieve better operating voltage, efficiency, lifetime, and voltage stability over time, while also enhancing LUMO energy, dipole moment, and thermal properties.
Innovation Solution
A compound of formula (I) is introduced, which includes specific substituents and structural elements that improve the performance of organic semiconductor materials. This compound is used in the organic semiconductor layer of organic electronic devices, enhancing their operational characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional organic semiconductor materials are used, then device structure and manufacturing process are simple, but operating voltage is high and efficiency is low
Solution Approach 1:
The patent modifies the molecular parameters of organic semiconductor materials by introducing specific substituents (electron-withdrawing groups like cyano, fluoro, and electron-donating groups like amino, alkoxy) to the core structure. This changes the HOMO-LUMO energy levels and dipole moments, resulting in reduced operating voltage and improved efficiency without fundamentally changing the device architecture
Solution Approach 2:
The patent creates composite molecular structures by combining different functional groups (electron-withdrawing and electron-donating groups) with core structures (triphenylene, triphenodiazine, etc.). This composite approach optimizes both electrical properties (lower operating voltage) and material stability, resolving the contradiction between performance improvement and structural complexity
2Reliability
If conventional organic semiconductor materials are used, then manufacturing process is simple, but lifetime and voltage stability are poor
Solution Approach 1:
The patent applies local quality modification by introducing specific functional groups at particular positions on the molecular core structure. For example, placing electron-withdrawing groups at specific locations improves electron transport and device lifetime, while the core structure remains suitable for conventional manufacturing processes
Solution Approach 2:
The patent changes material parameters (thermal stability, molecular weight, glass transition temperature) through systematic molecular design. These parameter changes improve device lifetime and voltage stability while maintaining compatibility with existing manufacturing processes like vacuum deposition and solution processing
3Temperature
If conventional organic semiconductor materials are used, then processing at room temperature is easy, but thermal stability is insufficient
Solution Approach 1:
The patent systematically changes thermal parameters of the organic semiconductor materials by modifying molecular weight, introducing rigid core structures, and adding specific substituents. These changes elevate glass transition temperatures and thermal decomposition points, enabling devices to operate at higher temperatures without degrading the materials' processability
Solution Approach 2:
The patent performs preliminary molecular design to ensure materials possess inherent thermal stability before device fabrication. By pre-optimizing molecular structures with high thermal resistance, the materials can withstand subsequent high-temperature processing steps and operational conditions without requiring complex temperature control measures
Data Source
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AI summary
The present invention is directed to a compound of formula (I) and their use in an organic electronic device.