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Title: 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:
 [1];  [1];  [2]
  1. Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA
  2. 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}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.4971332

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Cited by: 5 works
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