Benzo[c]coumarin Compounds for OLED Energy Efficiency
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Solution Overview
Problem
Existing electronic devices with polymeric compounds containing benzo[c]coumarin structures face challenges in energy efficiency, operating voltage, lifespan, and processing ease, particularly in organic light-emitting diodes, where high luminous efficacy and low voltage are required, and the devices' performance is not consistently cost-effective or temperature-stable.
Innovation Solution
The development of electronic devices incorporating compounds with specific benzo[c]coumarin structures, characterized by specific aromatic and heteroaromatic groups, which serve as improved hole transport, injection, blocking, and electron transport materials, enhancing efficiency, voltage, and lifespan, while being easy to process and maintain performance across a wide temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If polymeric compounds with benzo[c]coumarin structures are used in electronic devices, then the devices can achieve basic functionality, but the energy efficiency and luminous efficacy remain insufficient
Solution Approach 1:
The patent modifies the chemical structure of benzo[c]coumarin derivatives by introducing specific substituents (aromatic and heteroaromatic groups) and varying molecular weight parameters to optimize energy efficiency and performance consistency in electronic devices
Solution Approach 2:
The invention uses composite polymeric structures combining benzo[c]coumarin units with other functional groups to achieve both high energy efficiency and reliable performance in OLEDs and other electronic devices
2Power
If conventional organic semiconductors are used, then device functionality is achieved, but operating voltage remains too high
Solution Approach 1:
The patent adjusts molecular weight and substituent parameters of organic semiconductor compounds to reduce operating voltage while maintaining ease of processing and device functionality
3Duration of action of stationary object
If existing organic semiconductors are used, then basic device operation is achieved, but lifespan is limited
Solution Approach 1:
The patent employs composite organic semiconductor structures with specific functional groups that enhance device lifespan while managing structural complexity for practical applications
4Ease of manufacture
If organic semiconductors are used in electronic devices, then device functionality is achieved, but solubility and film formation properties are insufficient
Solution Approach 1:
The patent modifies molecular weight and substituent parameters of organic semiconductor compounds to optimize both solubility for processing and film formation quality for reliable device performance
5Use of energy by moving object
If electronic devices are designed for high performance, then efficiency is improved, but cost-effectiveness decreases
Solution Approach 1:
The patent optimizes molecular weight and substituent parameters to achieve high luminous efficacy through controlled synthesis routes that balance performance with manufacturing cost
6Use of energy by moving object
If electronic devices are designed for excellent performance, then efficiency is improved, but performance stability across temperature ranges decreases
Solution Approach 1:
The patent uses composite organic semiconductor structures with specific functional groups that maintain both high efficiency and temperature stability across varying operating conditions
Data Source
AI summary
The invention relates to heterocyclic compounds with benzo[c]coumarin structures and to electronic devices, in particular organic electroluminescent devices, containing said compounds.