Tetradentate Pt/Pd OLED Materials for Deep Blue and Red Emission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing organic light emitting diodes (OLEDs) face challenges in achieving saturated colors, particularly in producing deep blue and red emissions, which are crucial for full color displays, and there is a need for improved materials that can efficiently emit these colors while maintaining cost-effectiveness and flexibility.
Innovation Solution
The development of tetradentate compounds with specific structural features, including Pt or Pd as the central metal and monocyclic or polycyclic rings, which can be used in OLEDs to enhance deep blue and red emissions, thereby improving color saturation and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional organic materials are used in OLEDs, then cost-effectiveness and flexibility are maintained, but saturated color emission (particularly deep blue and red) cannot be achieved
Solution Approach 1:
The patent modifies the molecular structure parameters of organic compounds by introducing specific tetradentate ligand configurations with Pt or Pd metals, adjusting orbital energy levels and electron cloud distributions to achieve saturated deep blue and red emissions while maintaining cost-effectiveness and flexibility
Solution Approach 2:
The invention creates composite emissive materials by combining metal centers (Pt or Pd) with organic ligands featuring specific monocyclic or polycyclic fused ring systems, achieving synergistic effects that enable saturated color emission not possible with conventional single-component organic materials
2Illumination intensity
If new materials are developed to achieve saturated colors, then color emission performance improves, but material complexity and development cost increase
Solution Approach 1:
The patent divides the complex emissive material into modular components: metal centers (Pt or Pd) and organic ligands with specific ring systems, allowing independent optimization of each component's properties while achieving superior overall performance in saturated color emission
3Ease of manufacture
If conventional materials are used, then manufacturing simplicity is maintained, but deep blue and red color production is insufficient
Solution Approach 1:
The invention replaces conventional organic emitters with metal-coordinated tetradentate compounds that utilize quantum mechanical effects at the molecular level, enabling saturated color emission through electronic orbital transitions rather than through complex multi-layer structural arrangements, thus maintaining manufacturing simplicity
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 tetradentate compounds enable the production of OLEDs with enhanced deep blue and red emissions, meeting industry standards for saturated colors and improving display performance.
Implementation Method 1
OLEDs make use of thin organic films that emit light when voltage is applied across the device
Data Source
AI summary
Provided are organometallic compounds comprising a tetradentate ligand which is coordinated to a Pt or a Pd central atom. Also provided are formulations comprising these organometallic compounds comprising a tetradentate ligand. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds comprising a tetradentate ligand.