Polysiloxane compounds, methods of making, uses, and OLED devices
By using polysiloxane compounds as OLED light-emitting layer materials and sensitizers, the problem of efficiency roll-off and lifespan of blue light materials at high brightness has been solved, improving the efficiency and stability of OLED devices and simplifying device design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-03
- Publication Date
- 2026-07-17
AI Technical Summary
The existing blue light materials for OLED emissive layers suffer from severe efficiency roll-off at high brightness, making it difficult to simultaneously achieve both efficiency and lifespan. Energy level matching and interface stability issues in host-guest doping systems affect device lifespan and mass production consistency. Sensitizers are prone to decomposition at high current densities, increasing the complexity of device design.
Using polysiloxane compounds as the light-emitting layer material and sensitizer, and through the design of specific repeating units and end-group structures, the triplet energy and absolute quantum yield are improved. The preparation method includes the reaction of polymethylhydrosiloxane with specific compounds to form OLED devices with high-efficiency light-emitting layers.
It improves the maximum external quantum efficiency of OLED devices, enhances device stability and mass production consistency, simplifies device design, and reduces the risk of sensitizer decomposition.
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Figure CN122404709A_ABST
Abstract
Citation Information
Patent Citations
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