About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Physical Review B - CMMP
Paper
Hysteretic electroluminescence in organic light-emitting diodes for spin injection
Abstract
Organic light-emitting diodes with ferromagnetic contacts are fabricated, and their emission intensity is studied at room temperature for parallel and antiparallel magnetization configuration of anode and cathode. Sweeping the magnetic field applied parallel to the electrode allows the magnetization of the two electrodes to be switched independently. The electroluminescence intensity for the antiparallel magnetic configuration is found to be enhanced as compared to the parallel one. We show that this increase is not evidence of spin injection but is a consequence of the magnetic-field dependence of the electroluminescence intensity combined with magnetic stray fields from the electrodes.