"Here we addressed this challenge by incorporating an intrinsically stretchable exciplex-assisted phosphorescent (ExciPh) layer. The elastomer-tolerant triplet-recycling mechanism mitigates exciton energy transfer limitations arising from the insulating elastomer matrix, yielding a light-emitting layer with more than 200% stretchability and an external quantum efficiency (EQE) of 21.7%. To translate this performance to fully stretchable devices, we integrated MXene-contact stretchable electrodes (MCSEs), which feature high mechanical robustness and tunable work function (W"
"Fully stretchable organic light-emitting diodes (OLEDs), composed entirely of intrinsically stretchable materials, are essential for on-skin displays1,2,3. However, their low device efficiency has been a persistent barrier to practical applications for more than a decade4. The elastomer-tolerant triplet-recycling mechanism mitigates exciton energy transfer limitations arising from the insulating elastomer matrix, yielding a light-emitting layer with more than 200% stretchability and an external quantum efficiency (EQE) of 21.7%."
A stretchable exciplex-assisted phosphorescent (ExciPh) light-emitting layer enables elastomer-tolerant triplet recycling that overcomes exciton energy transfer limitations in insulating elastomer matrices. The ExciPh layer achieves more than 200% stretchability while delivering an external quantum efficiency (EQE) of 21.7%. MXene-contact stretchable electrodes (MCSEs) provide high mechanical robustness and tunable work function to translate the high-performance light-emitting layer into fully stretchable devices. The combination of intrinsically stretchable emissive materials, triplet-recycling mechanisms, and robust stretchable electrodes advances the development of efficient on-skin, fully stretchable OLED displays.
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