Fluoranthene Organic Light-Emitting Material for Low-Voltage Efficiency
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Solution Overview
Problem
Conventional organic thin-film light-emitting devices face challenges in achieving high luminous efficiency, low driving voltage, and durable life simultaneously.
Innovation Solution
A light-emitting device material with a compound represented by a specific general formula, incorporating a fluoranthene skeleton and electron-accepting nitrogen atoms, is used to enhance electron injection and transport properties, reduce crystallinity, and increase the glass transition temperature, thereby improving luminous efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional materials are used, then device structure is simple, but luminous efficiency is insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the organic compound by introducing specific functional groups (fluoranthene skeleton with electron-accepting nitrogen atoms) to optimize electron injection and transport properties, thereby simultaneously improving luminous efficiency and device durability
Solution Approach 2:
The patent employs composite material design by combining fluoranthene skeleton with nitrogen-containing heterocyclic rings to create a new organic compound class that exhibits both high luminous efficiency and prolonged device life through synergistic electronic properties
2Power
If driving voltage is reduced, then energy consumption decreases, but luminous efficiency becomes insufficient
Solution Approach 1:
The patent modifies molecular parameters of the organic compound to enhance electron affinity and mobility, enabling low-voltage operation while maintaining high luminous efficiency through improved charge transport mechanisms
3Use of energy by moving object
If materials with fluoranthene skeleton and nitrogen-containing heterocyclic ring are used, then luminous efficiency improves, but driving voltage reduction is insufficient
Solution Approach 1:
The patent applies local quality enhancement by strategically placing electron-accepting nitrogen atoms at specific positions within the fluoranthene skeleton, creating localized regions of high electron affinity that facilitate both efficient luminescence and low-voltage operation
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 material enables an organic thin-film light-emitting device with improved luminous efficiency, reduced driving voltage, and extended lifespan by facilitating efficient electron injection and transport while maintaining film stability.
Implementation Method 1
incorporating a fluoranthene skeleton and electron-accepting nitrogen atoms, is used to enhance electron injection and transport properties
Implementation Method 2
electrons injected from a cathode and holes injected from an anode emit light when they are recombined in an organic fluorescent body held by both electrodes
Data Source
AI summary
The purpose of the present invention is to provide an organic thin film light emitting element which has all of improved luminous efficiency, improved driving voltage and improved durability life. A light emitting element material of the present invention is characterized by containing a specific compound that has a fluoranthene skeleton.