Acenaphthopyridine Derivative Electron Transport Layer Low Voltage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Organic EL televisions consume more power than liquid crystal televisions due to higher drive voltage requirements, necessitating the development of materials that can reduce drive voltage for improved power efficiency and environmental sustainability.
Innovation Solution
A new acenaphthopyridine derivative is introduced as a material for the electron-transporting layer in light-emitting elements, which reduces the drive voltage by enhancing electron-transporting and electron-injecting properties, allowing for efficient light emission at lower voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional electron-transporting materials are used in light-emitting elements, then the element can emit light, but the drive voltage remains high resulting in high power consumption
Solution Approach 1:
The patent applies parameter changes by developing new electron-transporting materials with modified molecular structures (compounds 1-10 and 11-20) that have optimized electronic properties. These structural parameter changes result in materials with lower LUMO energy levels and higher electron mobility, directly reducing the drive voltage from conventional levels to below 10V, thereby reducing power consumption.
Solution Approach 2:
The patent employs composite materials by creating light-emitting elements that combine the newly developed acenaphthopyridine-based electron-transporting materials with specific host materials (compounds 21-30) and emitting materials. This composite approach optimizes the overall device performance by selecting materials with complementary properties, achieving low drive voltage operation while maintaining high efficiency and stability.
2Power
If fewer material choices are available for electron-transporting layers, then material selection is simpler, but it becomes difficult to find materials that can reduce drive voltage
Solution Approach 1:
The patent applies segmentation by dividing the electron-transporting function into multiple specialized materials (compounds 1-10 for electron injection, compounds 11-20 for electron transport) with distinct optimized structures. This segmentation allows each material to be specifically tailored for its function, expanding the overall material library and enabling selection of optimal combinations for low drive voltage operation.
Solution Approach 2:
The patent systematically varies molecular parameters (substituent groups, core structures, molecular weight) across the series of compounds 1-30 to create a diverse material family. This parameter exploration strategy expands material choices while maintaining the core acenaphthopyridine structure that enables low drive voltage operation, providing both breadth of selection and depth of optimization.
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 acenaphthopyridine derivative enables the production of light-emitting elements that can operate at lower voltages, thereby reducing power consumption and improving the environmental sustainability of organic EL televisions.
Implementation Method 1
an acenaphthopyridine derivative which is suitable for a material of an electron-transporting layer of a light-emitting element
Data Source
AI summary
It is an object to provide a new compound which is suitable for a material of an electron-transporting layer of a light-emitting element. In particular, it is an object to provide a compound which can be used for forming a light-emitting element capable of emitting light at a low drive voltage. An acenaphthopyridine derivative represented by the following general formula (G1) is provided. In the formula, Het represents a pyridyl group or a quinolyl group.