Organic Electronic Compound Optimizing Energy Levels for Efficiency and Lifespan

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Solution Overview

Problem

Current organic electronic elements face challenges in achieving high luminous efficiency, low driving voltage, and extended lifespan due to limitations in the development of stable and efficient materials for the organic material layers, particularly for electron transport and light emitting materials.

Innovation Solution

A compound represented by a specific formula is used as a host or dopant in the organic material layers, optimizing energy levels and T1 values to enhance mobility and interfacial properties, thereby improving the efficiency and lifespan of the organic electronic element.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a host/dopant system is used to enhance color purity and luminous efficiency, then luminous efficiency is improved, but driving voltage increases and lifespan decreases

Engineering Contradiction:

Improveluminous efficiencyVSAvoidlifespan

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent changes the chemical structure parameters of the dopant molecule by introducing specific substituents (e.g., triphenylamine, carbazole groups) and modifying the core structure to achieve optimal energy levels and T1 values that balance efficiency and lifespan

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite host/dopant system where the dopant is embedded in a host matrix, with the dopant having specific molecular weight (100-500 Da) and structural characteristics that enable efficient energy transfer while maintaining device stability and long operational life

Inventive Principle:

Principle #40Composite materials

2Productivity

If organic material layer is improved to maximize efficiency, then luminous efficiency is improved, but manufacturing complexity increases

Engineering Contradiction:

Improveluminous efficiencyVSAvoidmanufacturing complexity

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent applies local quality by designing the dopant with specific functional groups and molecular characteristics concentrated in certain regions of the molecule, allowing efficient energy transfer in the light emitting layer while maintaining compatibility with standard manufacturing processes

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent optimizes molecular weight parameters (100-500 Da) and structural parameters of the dopant to ensure proper solubility, film formation, and energy transfer properties that can be achieved through conventional organic electronics manufacturing techniques

Inventive Principle:

Principle #35Parameter changes

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 use of this compound results in high luminous efficiency and low driving voltage, significantly improving the lifespan of the organic electronic element by optimizing the energy levels and inherent material properties within the layers.

Implementation Method 1

excitons generated in the light emitting layer are transported to the dopant, thus emitting light with high efficiency

Methodology Applied

Scientific EffectEnergy transfer: Fluorescence

Data Source

PatentUS11088330B2Compound for organic electronic element, organic electronic element using same, and electronic device comprising same

Publication Date: 2021.08.10 DUK SAN NEOLUX

AI summary

The purpose of the present invention is to provide a compound that can improve the lifespan, low drive voltage and high luminous efficiency of an element, an organic electronic element using same, and an electronic device comprising same.