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The paper describes a multi-layer stack optimized for blue phosphorescent emitters. 4. Performance Results

High-energy blue excitons often lead to material degradation, particularly at the host-guest interface. 124694

(time to 50% initial brightness) of the devices compared to standard host-guest systems. The paper describes a multi-layer stack optimized for

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