Organic Semiconductor Layer with Triazine Ring for OLED Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for organic semiconductor materials and devices with improved electron mobility and electrochemical stability to enhance the performance of organic light-emitting diodes (OLEDs), particularly for large-size flat panel displays, while maintaining low operating voltage and power consumption.
Innovation Solution
A compound with a specific chemical formula is used as a layer material in OLEDs, featuring an anellated aromatic or heteroaromatic ring structure that enhances electron transport characteristics, stability, and luminance efficiency, with a low operating voltage and minimal emissive contribution to the visible spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic semiconductor materials are used, then device structure is simple, but electron mobility is insufficient and electrochemical stability is poor
Solution Approach 1:
The patent employs composite molecular structures combining electron-transporting moieties (such as triazine rings, pyrimidine rings, or pyridine rings) with aromatic hydrocarbon groups (phenyl, naphthyl, anthryl groups). This composite approach integrates the electrochemical stability provided by the heterocyclic electron-transporting units with the structural framework of aromatic hydrocarbons, achieving both improved reliability and controlled complexity through deliberate molecular design
Solution Approach 2:
The patent introduces specific functional groups (electron-transporting moieties containing N, O, or S atoms) at strategic positions within the molecular structure. These localized functional regions provide enhanced electrochemical stability and electron mobility without requiring complete restructuring of the entire molecule, thus improving reliability while maintaining manageable structural complexity through targeted modifications
2Productivity
If organic semiconductor layer is optimized for high efficiency, then luminance efficiency improves, but operating voltage increases and power consumption rises
Solution Approach 1:
The patent optimizes specific molecular parameters including the selection of electron-transporting moieties (triazine, pyrimidine, pyridine rings), the type of aromatic hydrocarbon groups (phenyl, naphthyl, anthryl), and their connectivity patterns. These parameter changes enable tuning of electron mobility and HOMO/LUMO energy levels to achieve high luminance efficiency at reduced operating voltages, thereby lowering power consumption while maintaining high productivity
3Speed
If electron mobility is increased to improve device performance, then charge transport improves, but electrochemical stability may deteriorate
Solution Approach 1:
The patent creates composite molecular structures where electron-transporting moieties (providing high electron mobility through their heterocyclic ring systems with delocalized electrons) are combined with stable aromatic hydrocarbon frameworks (phenyl, naphthyl, anthryl groups). This composite design ensures that the electron mobility enhancement from the heterocyclic units is balanced by the electrochemical stability provided by the aromatic hydrocarbon portions, achieving both improved speed and reliability simultaneously
Data Source
AI summary
The present invention relates to compounds comprising a TAE-structure to which a substituted or unsubstituted triazine ring is directly bonded, for use as a layer material for electronic devices, and to an organic electronic device comprising the layer material, and a method of manufacturing the same.