Phosphorescent PtAg2 Complex for Cost-Effective OLED Fabrication
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Summary
Problems
The high costs and complexity of preparing light-emitting thin-film layers in organic electroluminescent devices using vacuum thermal evaporation limit the industrial development and commercial applications of full-color displays, necessitating a more efficient and cost-effective method for fabricating organic light-emitting diodes.
Innovation solutions
The development of ionic-type phosphorescent PtAg2 metal-organic alkynyl complexes with racemic or meso structures, which can be used as luminescent materials for organic light-emitting diodes, allowing for simpler and cheaper solution-based spin-coating or inkjet printing processes, and exhibiting strong phosphorescence emission with high quantum efficiency.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If electroneutral cyclometalated iridium (III) complexes are used as phosphorescent materials, then ideal thin-film light-emitting layers can be fabricated by vacuum thermal evaporation, but the equipment costs are high and the preparation processes are complicated
Why choose this principle:
The patent changes the chemical nature of the phosphorescent complex from electroneutral to ionic type, which fundamentally alters the preparation methodology. Ionic-type complexes can be processed in solution form, enabling the use of simple spin-coating techniques instead of complex vacuum thermal evaporation, thus reducing both equipment requirements and process complexity while maintaining film quality
Principle concept:
If electroneutral cyclometalated iridium (III) complexes are used as phosphorescent materials, then ideal thin-film light-emitting layers can be fabricated by vacuum thermal evaporation, but the equipment costs are high and the preparation processes are complicated
Why choose this principle:
The patent replaces the mechanical vacuum evaporation system with a solution-based spin-coating process. This substitution eliminates the need for expensive vacuum evaporation equipment and simplifies the preparation process, while the ionic structure of the complex enables effective solution processing that produces high-quality thin-film light-emitting layers
Application Domain
Data Source
AI summary:
The development of ionic-type phosphorescent PtAg2 metal-organic alkynyl complexes with racemic or meso structures, which can be used as luminescent materials for organic light-emitting diodes, allowing for simpler and cheaper solution-based spin-coating or inkjet printing processes, and exhibiting strong phosphorescence emission with high quantum efficiency.
Abstract
Provided is an ionic type phosphorescent metal complex with a racemization structure, a preparation method therefor and a use thereof. The structure of the complex is [PtAg 2 {rac-(PPh 2 CH 2 PPhCH 2 —) 2 }(C≡CR) 2 (PR′ 3 ) 2 ] 2+ A n− 2/n or [PtAg 2 {meso-(PPh 2 CH 2 PPhCH 2 —) 2 }(C≡CR) 2 (PR′ 3 )(μ-X)] + m A m− , wherein R is the same or different and is independently selected from alkyl, aryl, heteroaryl, and heteroaryl aryl; R′ is the same or different and is independently selected from alkyl, aryl, and heteroaryl; the alkyl, aryl, and heteroaryl can be substituted by one or more substituents which are selected from alkyl, alkenyl, alkynyl, alkoxy, amino, halogen, halogenated alkyl, and aryl; X is halogen; A m− and A n− are monovalent or bivalent anions; and m or n is 1 or 2. The present invention also relates to an organic light emitting diode, a preparation method therefor and use thereof. The organic light emitting diode prepared by taking the phosphorescent metal complex of the present invention as a luminous layer dopant has high-performance organic electroluminescence and can be applied to panel display.