skip to main content

DOE PAGESDOE PAGES

Title: Manipulation of the electroluminescence of organic light-emitting diodes via fringe fields from patterned magnetic domains

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. Univ. of Iowa, Iowa City, IA (United States)
  2. Univ. of Iowa, Iowa City, IA (United States); Eindhoven Univ. of Technology (Netherlands)
Publication Date:
Grant/Contract Number:
SC0014336
Type:
Published Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 24; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Univ. of Iowa, Iowa City, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1337587
Alternate Identifier(s):
OSTI ID: 1336501; OSTI ID: 1425743