Multifunctional device capable of both high-efficiency light emission (OLED) and energy harvesting (OPV) within a single component

https://www.eurekalert.org/news-releases/1113980

"exciton behavior trade-off: must recombine tightly to produce light in OLEDs/ must split quickly into free charges to generate power in OPVs... overcome utilizing Multiple-Resonance Thermally Activated Delayed Fluorescence managing exciton binding energy/ minimizing voltage loss during power generation... larger binding energy = yellow light, smaller = blue, for full-color control... lighting systems generating power during day/ fuel illumination at night, self-charging: smartphones, wearables, sensors"

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https://techxplore.com/news/2026-01-stacked-ionic-cells-electric-rays.html