Wireless magnetoelectrically powered organic light-emitting diodes

Julian F. Butscher, Sabina G. H. Hillebrandt, Andreas Mischok, Anna Popczyk, Jonathan H. H. Booth, Malte Christian Gather

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
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Compact wireless light sources are a fundamental building block for applications ranging from wireless displays to optical implants. However, their realization remains challenging because of constraints in miniaturization and the integration of power harvesting and light-emission technologies. Here, we introduce a strategy for a compact wirelessly powered light-source that consists of a magnetoelectric transducer serving as power source and substrate and an antiparallel pair of custom-designed organic light-emitting diodes. The devices operate at low-frequency ac magnetic fields (~100 kHz), which has the added benefit of allowing operation multiple centimeters deep inside watery environments. By tuning the device resonance frequency, it is possible to separately address multiple devices, e.g., to produce light of distinct colors, to address individual display pixels, or for clustered operation. By simultaneously offering small size, individual addressing, and compatibility with challenging environments, our devices pave the way for a multitude of applications in wireless displays, deep tissue treatment, sensing, and imaging.
Original languageEnglish
Number of pages9
JournalScience Advances
Issue number10
Early online date6 Mar 2024
Publication statusE-pub ahead of print - 6 Mar 2024


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