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Organic magnetoelectroluminescence for room temperature transduction between magnetic and optical information

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  • Ferran Macià

    (New York University)

  • Fujian Wang

    (University of Iowa)

  • Nicholas J. Harmon

    (University of Iowa)

  • Andrew D. Kent

    (New York University)

  • Markus Wohlgenannt

    (University of Iowa)

  • Michael E. Flatté

    (University of Iowa)

Abstract

Magnetic and spin-based technologies for data storage and processing provide unique challenges for information transduction to light because of magnetic metals’ optical loss, and the inefficiency and resistivity of semiconductor spin-based emitters at room temperature. Transduction between magnetic and optical information in typical organic semiconductors poses additional challenges, as the spin–orbit interaction is weak and spin injection from magnetic electrodes has been limited to low temperature and low polarization efficiency. Here we demonstrate room temperature information transduction between a magnet and an organic light-emitting diode that does not require electrical current, based on control via the magnet’s remanent field of the exciton recombination process in the organic semiconductor. This demonstration is explained quantitatively within a theory of spin-dependent exciton recombination in the organic semiconductor, driven primarily by gradients in the remanent fringe fields of a few nanometre-thick magnetic film.

Suggested Citation

  • Ferran Macià & Fujian Wang & Nicholas J. Harmon & Andrew D. Kent & Markus Wohlgenannt & Michael E. Flatté, 2014. "Organic magnetoelectroluminescence for room temperature transduction between magnetic and optical information," Nature Communications, Nature, vol. 5(1), pages 1-7, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4609
    DOI: 10.1038/ncomms4609
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