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(time to 50% initial brightness) of the devices compared to standard host-guest systems.

This approach involves trapping electron-transporting molecules within the host matrix to minimize exciton quenching and reduce the efficiency roll-off at high luminance. 124694

The host material incorporates a rigid silicon-locked framework to prevent molecular rotation and improve heat resistance. (time to 50% initial brightness) of the devices

The development of silicon-locked phosphine oxide hosts represents a major step forward for blue OLED technology. The dual encapsulation strategy not only improves immediate performance metrics but also addresses the long-term stability issues that have historically hindered the commercial application of high-efficiency blue emitters. 124694