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P‐174: Triplet Exciton Diffusion in Hybrid Fluorescent/Phosphorescent OLEDs
Author(s) -
Deaton Joseph C.,
Kondakova Marina E.,
Kondakov Denis Y.,
Pawlik Thomas D.,
Giesen David J.
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785441
Subject(s) - phosphorescence , exciton , fluorescence , electroluminescence , oled , materials science , optoelectronics , singlet state , photochemistry , phosphorescent organic light emitting diode , layer (electronics) , chemistry , optics , physics , atomic physics , nanotechnology , condensed matter physics , excited state
A hybrid OLED comprising blue fluorescent and red phosphorescent emitters is reported. External quantum efficiencies for the blue and the red components of the electroluminescence along with time‐resolved measurements, magnetic field effect, and ED‐EPR experiments suggest that the recombination occurs in the blue emissive layer producing fluorescence with the singlet excitons, while the triplet excitons are utilized upon migration to the red layer.