Fluorinated Triarylamine OLED Compound for Efficiency and Lifetime
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Solution Overview
Problem
Current OLED devices face challenges in improving luminous efficiency, service life, and reducing operating voltage to meet the demands of actual product applications.
Innovation Solution
An organic compound with a triarylamine structure incorporating fluorine and aromatic substituents on the benzene ring of carbazole is introduced, enhancing hole transport efficiency and thermal stability, which is used in the organic electroluminescent device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic electroluminescent materials are used, then the device can operate and emit light, but the luminous efficiency and service life need to be further improved
Solution Approach 1:
The patent modifies the molecular structure of organic electroluminescent materials by introducing specific functional groups (carbazole, triarylamine, dibenzofuran, dibenzothiophene) and substituents (fluorine, aromatic groups, deuterium, cyano, alkyl groups) to optimize electronic properties, hole transport efficiency, and thermal stability, thereby simultaneously improving luminous efficiency and service life
Solution Approach 2:
The patent designs composite organic compounds combining multiple functional moieties (carbazole, triarylamine, dibenzofuran, dibenzothiophene) within a single molecular structure to achieve synergistic effects that enhance both luminous efficiency and device service life
2Use of energy by moving object
If the operating voltage is reduced to meet application requirements, then energy consumption decreases, but maintaining high luminous efficiency becomes more challenging
Solution Approach 1:
The patent optimizes the HOMO-LUMO energy levels and charge transport properties of organic materials through molecular structure design, enabling low operating voltage operation while maintaining high luminous efficiency by improving hole injection and transport characteristics
3Productivity
If hole transport efficiency is enhanced through molecular structure modification, then luminous efficiency improves, but thermal stability must be maintained
Solution Approach 1:
The patent combines rigid aromatic structures (carbazole, dibenzofuran, dibenzothiophene) with flexible substituent groups to create composite molecules that simultaneously achieve high hole transport efficiency through effective charge carrier mobility and thermal stability through rigid molecular backbones that resist thermal degradation
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 compound improves the lifetime and luminous efficiency of OLED devices while maintaining thermal stability.
Implementation Method 1
the organic compound of the present disclosure both effective in preventing electron migration and promoting hole transport, and having high hole transport efficiency
Implementation Method 2
Organic electroluminescent devices (OLED), also known as organic light-emitting diodes, refer to the phenomenon that organic light-emitting materials emit light when excited by an electric current under the influence of an electric field. It is a process of converting electrical energy into light energy.
Implementation Method 3
the compound of the present disclosure has appropriate torque in space, thereby improving the thermal stability of the compound
Data Source
AI summary
The present invention belongs to the field of organic light-emitting materials, and particularly relates to an organic compound, an organic electroluminescent device using the organic compound, and an electronic apparatus. The organic compound has a structure represented by formula (1). The organic compound is used in the organic electroluminescent device, such that the performance of the device can be improved.