Metal Ion Adducts of Neutral Phosphorescent Emitters for Use in Light-Emitting Organic Optoelectronic Devices

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent relates to novel cationic alkali metal adducts of neutral phosphorescent transition metal complexes (such as those of iridium, platinum, gold, etc.), and describes their synthesis and use as advanced emitter materials in optoelectronic devices, especially organic light-emitting electrochemical cells (OLEECs), organic light-emitting diodes (OLEDs), or hybrid devices. The core invention is that alkali metal ions (Li, Na, K, Rb, Cs) can form stable, positively charged complexes with neutral phosphorescent transition metal emitters, resulting in improved material properties and performance for use in light-emitting layers of modern optoelectronic components.

Use CasesContent extracted from patent full text and abstract with AI.

• Emitters in OLED displays and lighting systems for TVs, smartphones, monitors, and general illumination.
• Emitter materials in OLEECs for low-cost, printable light sources for signage, flexible lighting, or disposable lighting applications.
• Development of hybrid OLED/OLEEC devices that combine the advantages of both technologies (e.g., easy processing with high efficiency).
• Advanced optoelectronic components for smart windows, sensor systems, or photonic circuits.
• Light sources in medical devices, analytical equipment, or portable electronics that require miniaturized, efficient LEDs.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables the use of neutral phosphorescent emitters in ionic forms, expanding the material choices for emissive layers in optoelectronics.
• Potential for improved efficiency and device lifetime compared to conventional (polymer-based) OLEECs or OLEDs due to better charge transport and reduced emitter degradation.
• Facilitates solution processing and physical vapor deposition methods, making manufacturing more flexible and cost-effective.
• Allows tuning of emission spectra (including UV, visible, and IR) for custom applications.
• Enables the creation of hybrid devices that merge advantages of OLEDs (high efficiency, color purity) with OLEECs (easy processing, low cost).
• May reduce issues like leakage current and allow for better-defined device architectures (e.g., p-i-n structures) in electrochemical light-emitting devices.

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Patent Abstract

The present invention relates to cationic alkali metal compounds of neutral transition metal complexes, to methods for producing same and to the use thereof in optoelectronic components.