Organic Compound Fused Ring Core for Charge Mobility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing organic optoelectric devices face challenges in achieving high charge mobility and low driving voltage while maintaining device efficiency and lifespan, primarily due to limitations in the properties of the organic compounds used in their layers.
Innovation Solution
An organic compound is developed, represented by a combination of specific moieties that form fused rings, which enhances charge mobility, reduces driving voltage, and suppresses crystallization, thereby improving the efficiency and lifespan of organic optoelectric devices. This compound can be used in the emission layer and other layers of the device, such as hole and electron transport layers, to optimize device performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional organic compounds are used in optoelectric devices, then device structure and operation are simplified, but charge mobility is low and driving voltage is high
Solution Approach 1:
The patent applies parameter changes by modifying the molecular structure of organic compounds through specific moiety combinations (Formulae 1-3) to fundamentally alter charge transport properties. The fused ring structures and heteroatom substitutions change the electronic parameters of the material, enabling high charge mobility while reducing the energy (driving voltage) required for device operation.
Solution Approach 2:
The invention uses composite material principles by combining multiple functional moieties (electron-transporting group, hole-transporting group, and fused ring core) into a single organic compound molecule. This composite molecular structure integrates multiple functions (electron transport, hole transport, crystallization suppression) into one material that can be used across different device layers.
2Reliability
If existing organic compounds are used, then manufacturing process is simpler, but device efficiency and lifespan are insufficient
Solution Approach 1:
The patent applies universality by designing an organic compound with multi-functional moieties that can serve multiple purposes: electron transport, hole transport, and crystallization suppression. This single compound can be used in emission layers, hole transport layers, and electron transport layers, simplifying the manufacturing process while improving device reliability and lifespan through enhanced performance characteristics.
3Productivity
If organic compounds with high charge mobility are used, then device efficiency improves, but driving voltage increases
Solution Approach 1:
The patent resolves this contradiction through parameter changes in the molecular structure, specifically using fused ring cores with heteroatom substitutions (X1, X2, X3 being NRa, CRbRc, SiRdRe, O, S, SO or SO2) to optimize the balance between charge mobility and energy levels. This structural modification changes the electronic parameters to achieve high efficiency at lower driving voltages.
Data Source
AI summary
An organic compound represented by a combination of a moiety represented by the following Chemical Formula 1, a moiety represented by the following Chemical Formula 2, and a moiety represented by the following Chemical Formula 3,