Manipulation of the electroluminescence of organic light-emitting diodes via fringe fields from patterned magnetic domains
Abstract
We predict very large changes in the room-temperature electroluminescence of thermally-activated delayed fluorescence organic light emitting diodes near patterned ferromagnetic films. These effects exceed the changes in a uniform magnetic field by as much as a factor of two. We describe optimal ferromagnetic film patterns for enhancing the electroluminescence. A full theory of the spin-mixing processes in exciplex recombination and how they are affected by hyperfine fields, spin-orbit effects, and ferromagnetic fringe field effects is introduced. These spin-mixing processes are used to describe the effect of magnetic domain structures on the luminescence in various regimes. This provides a method of enhancing light emission rates from exciplexes and also a means of efficiently coupling information encoded in the magnetic domains to organic light emitting diode emission
- Authors:
-
- Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA
- Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA, Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Publication Date:
- Research Org.:
- Univ. of Iowa, Iowa City, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1337587
- Alternate Identifier(s):
- OSTI ID: 1336501; OSTI ID: 1425743
- Grant/Contract Number:
- SC0014336
- Resource Type:
- Published Article
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Name: Applied Physics Letters Journal Volume: 109 Journal Issue: 24; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Harmon, N. J., Wohlgenannt, M., and Flatté, M. E. Manipulation of the electroluminescence of organic light-emitting diodes via fringe fields from patterned magnetic domains. United States: N. p., 2016.
Web. doi:10.1063/1.4971332.
Harmon, N. J., Wohlgenannt, M., & Flatté, M. E. Manipulation of the electroluminescence of organic light-emitting diodes via fringe fields from patterned magnetic domains. United States. https://doi.org/10.1063/1.4971332
Harmon, N. J., Wohlgenannt, M., and Flatté, M. E. Fri .
"Manipulation of the electroluminescence of organic light-emitting diodes via fringe fields from patterned magnetic domains". United States. https://doi.org/10.1063/1.4971332.
@article{osti_1337587,
title = {Manipulation of the electroluminescence of organic light-emitting diodes via fringe fields from patterned magnetic domains},
author = {Harmon, N. J. and Wohlgenannt, M. and Flatté, M. E.},
abstractNote = {We predict very large changes in the room-temperature electroluminescence of thermally-activated delayed fluorescence organic light emitting diodes near patterned ferromagnetic films. These effects exceed the changes in a uniform magnetic field by as much as a factor of two. We describe optimal ferromagnetic film patterns for enhancing the electroluminescence. A full theory of the spin-mixing processes in exciplex recombination and how they are affected by hyperfine fields, spin-orbit effects, and ferromagnetic fringe field effects is introduced. These spin-mixing processes are used to describe the effect of magnetic domain structures on the luminescence in various regimes. This provides a method of enhancing light emission rates from exciplexes and also a means of efficiently coupling information encoded in the magnetic domains to organic light emitting diode emission},
doi = {10.1063/1.4971332},
journal = {Applied Physics Letters},
number = 24,
volume = 109,
place = {United States},
year = {Fri Dec 16 00:00:00 EST 2016},
month = {Fri Dec 16 00:00:00 EST 2016}
}
https://doi.org/10.1063/1.4971332
Web of Science
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