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Improving the efficiency and operational stability of blue organic light-emitting diodes (OLEDs) remains a primary challenge in display and lighting technology. This paper examines a novel host material, a silicon-locked phosphine oxide, designed to enhance the performance of blue OLEDs. By utilizing a "dual encapsulation" strategy for electron transporting materials, the study demonstrates a significant increase in both device longevity and external quantum efficiency.

Blue OLEDs are critical for full-color displays but typically suffer from shorter lifespans and lower efficiency compared to their red and green counterparts. 124694

The silicon-locked host enables highly efficient blue emission with minimized non-radiative loss. Improving the efficiency and operational stability of blue

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. Blue OLEDs are critical for full-color displays but

The host material incorporates a rigid silicon-locked framework to prevent molecular rotation and improve heat resistance.