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Diarylaminofluorene-Based Organometallic Phosphors and Organic Light-Emitting Devices Made with Such Compounds芴基芳胺有機金屬磷光材料及其有機電致發光器件

Interests in organic-based optoelectronic materials for organic light-emitting diodes (OLEDs) are growing tremendously since it is surely to be the important comprising elements for flat-panel display technologies in the future. Conventional OLEDs containing all-organic emissive materials are usually limited to an external quantum efficiency of around 5% based on single-state fluorescent materials. Therefore, phosphorescent metal complexes that can be incorporated into OLEDs are under active investigation for the potential of increasing the device efficiency.

New formulations are now invented for highly amorphous and phosphorescent organometallic complexes of iridium (III) and platinum (II) with diarylaminofluorene chromophores. The new method introduced can offer a good channel to lower the ionization potential, induce morphologically stable amorphous thin-film formation, and enhance the thermal stability of the complexes. These organometallic complexes show very high glass-transition temperatures while the metal phosphors emit a wide spectrum of colors at room temperature in both solution and the solid state, a high efficiency electrophorescent organic light-emitting devices can be fabricated.

This invention can be widely applied in the flat-panel display technologies in the next generation.
Technology Benefits
1. Higher device efficiency
2. Improved electroluminescence
3. Enhanced emission and thermal stability
Technology Application
- Organic light-emitting diodes (OLED) in the flat-panel displays
Supplementary Information
Patent Number: US8152136B2
Application Number: US2007984915A
Inventor: Cheng, Ching-Hsiang | Chao, Chen | Cheung, Yin-Nee
Priority Date: 26 Nov 2007
Priority Number: US8152136B2
Application Date: 26 Nov 2007
Publication Date: 10 Apr 2012
IPC Current: F16K003102
US Class: 25112906 | 25112901 | 251333 | 251368 | 6048911
Assignee Applicant: The Hong Kong Polytechnic University
Title: Polymer microvalve with actuators and devices
Usefulness: Polymer microvalve with actuators and devices
Summary: Micro valve i.e. transdermal drug releasing micro valve, for use in a micro pump (all claimed) that is utilized in a mammal body for medicine administration.
Novelty: Micro valve i.e. transdermal drug releasing micro valve, for use in micro pump, has actuator e.g. magnetic actuator, silicon member containing sidewalls, and valve plug with correcting legs and anchors
Sub Category
Chemical/Material Application
Application Date
12 Sep 2006
Application No.
US 11/520148
Patent Information
US 7652136
ID No.
Hong Kong

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