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Triplet Harvesting by a Conventional Fluorescent Emitter Using Reverse Intersystem Crossing of Host Triplet Exciplex
Author(s) -
Kim KwonHyeon,
Moon ChangKi,
Sun Jin Won,
Sim Bomi,
Kim JangJoo
Publication year - 2015
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201400644
Subject(s) - intersystem crossing , fluorescence , excimer , materials science , oled , exciton , common emitter , dopant , photochemistry , optoelectronics , quantum efficiency , doping , optics , excited state , nanotechnology , atomic physics , chemistry , singlet state , physics , layer (electronics) , quantum mechanics
A red fluorescent OLED with an unprecedented external quantum efficiency of 10.6% is created using an exciplex forming system as a host for a conventional fluorescent dopant not showing delayed fluorescence. Quantitative analysis indicates that over 35% of the total excitons are converted to emission light, clearly indicating the triplet harvesting in the system.