Triazine Compound Electron Transport Layer Driving Voltage
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Solution Overview
Problem
Existing organic light emitting diodes (OLEDs) with electron transport layers containing triazine compounds from prior patents have insufficient driving voltage characteristics and durability, necessitating improvements for enhanced performance.
Innovation Solution
A triazine compound represented by formula (1) is developed, featuring specific aryl and naphthyl groups, phenyl, and pyridyl substitutions, which is used as a material for OLEDs to form a low-driving voltage and durable electron transport layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing triazine compounds (from Patent Documents 1-3) are used in electron transport layers, then the OLED structure is simple and manufacturing is easier, but driving voltage is high and driving lifetime is short
Solution Approach 1:
The patent modifies the molecular structure of triazine compounds by introducing specific substituent groups (formulae X, Y, Z with aryl groups, pyridyl groups, and specific structural features) to change the electronic and transport properties of the material, thereby reducing driving voltage and extending driving lifetime simultaneously
Solution Approach 2:
The patent creates composite electron transport materials by combining triazine core structures with specific substituent groups (A, B, L, n, C parameters) to achieve synergistic effects that improve both driving voltage characteristics and driving lifetime
2Productivity
If existing triazine compounds are used in electron transport layers, then manufacturing process is simpler, but current efficiency is insufficient
Solution Approach 1:
The patent optimizes molecular parameters of triazine compounds (substituent types, positions, and configurations defined by formulae X, Y, Z) to enhance electron mobility and current efficiency while maintaining structural features that facilitate manufacturing
3Use of energy by moving object
If existing triazine compounds are used, then device structure is simpler, but driving voltage characteristics are insufficient
Solution Approach 1:
The patent systematically varies molecular parameters of triazine compounds (formulae X, Y, Z with different aryl and pyridyl groups) to optimize electron transport properties and reduce driving voltage, accepting increased molecular complexity as necessary for performance improvement
Data Source
AI summary
A triazine compound represented by formula (1) is provided. In the formula (1),A and B each independently represent an aryl group having 6 to 20 carbon atoms;L represents a phenyl group or a naphthyl group;n is 0 or 1; andC represents any one of groups X, Y, and Z below,wherein Ar1 and Ar2 each independently represent an aromatic hydrocarbon group or a pyridyl group.