Stretchable OLEDs hit new efficiency and durability milestone

Researchers report fully stretchable organic LEDs built from intrinsically stretchable materials, using an exciplex-assisted phosphorescent layer (ExciPh) and MXene-contact stretchable electrodes. The design achieves elastomer-tolerant triplet recycling with over 200% stretchability, an emissive-layer EQE of 21.7%, and a fully stretchable device EQE of 17.0% with minimal luminance loss under 60% strain, enabling high-performance wearable deformable displays.