Organic Electroluminescent Device Using Titanium Oxide Derivative
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Solution Overview
Problem
Conventional organic electroluminescent devices face limitations in luminescent efficiency and lifetime, with TiO2 nanoparticles requiring uniform dispersion to achieve higher luminosity and efficiency, which is challenging to maintain.
Innovation Solution
Incorporating a uniform layer formed using a liquid state titanium oxide derivative or doping organic layers with titanium oxide derivatives, represented by specific chemical formulas, to enhance luminescent efficiency and extend the device's lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If TiO2 nanoparticles are used to improve luminescent efficiency, then luminosity and efficiency increase, but uniform dispersion becomes difficult to maintain
Solution Approach 1:
The patent changes the physical state of titanium oxide from solid nanoparticles to liquid state derivative, which fundamentally alters its dispersibility and ease of incorporation into organic layers, resolving the uniform dispersion issue while maintaining luminescent efficiency enhancement
Solution Approach 2:
The patent creates a composite structure by incorporating titanium oxide derivative into organic electroluminescent layers, combining the benefits of TiO2 luminescent enhancement with the advantages of liquid-state processing for uniform distribution
2Ease of manufacture
If conventional organic layers are used, then manufacturing is simpler, but luminescent efficiency and lifetime are lower
Solution Approach 1:
The patent modifies the chemical composition parameter by introducing titanium oxide derivative into the organic layer system, which enhances luminescent efficiency and device lifetime while maintaining compatibility with existing manufacturing processes
Solution Approach 2:
The titanium oxide derivative acts as an intermediary substance that mediates between the organic layers and electrodes, improving charge transport and luminescent efficiency without complicating the overall device structure or manufacturing process
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 titanium oxide derivatives results in higher luminescent efficiency and longer device lifetime, while allowing for easier and more economical manufacturing, with lower operating voltages and improved performance compared to conventional devices.
Implementation Method 1
electrons and holes are combined together in the organic layer, thereby emitting light
Implementation Method 2
when a current is provided to a fluorescent or phosphorescent organic layer, electrons and holes are combined together in the organic layer, thereby emitting light
Data Source
AI summary
Provided is an organic electroluminescent device including an organic layer interposed between a pair of electrodes, the organic layer including a layer formed of a titanium oxide derivative or a mixture layer containing a titanium oxide derivative. The organic electroluminescent device has higher luminescent efficiency, a longer lifetime and a lower operating voltage than a conventional organic electroluminescent device, and can be easily manufactured.