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Organic Light‐emitting Devices Based on Phosphorescent Hosts and Dyes
Author(s) -
Kwong R. C.,
Lamansky S.,
Thompson M. E.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200008)12:15<1134::aid-adma1134>3.0.co;2-1
Subject(s) - phosphorescence , materials science , dopant , electroluminescence , phosphorescent organic light emitting diode , doping , optoelectronics , energy transfer , oled , photochemistry , fluorescence , layer (electronics) , nanotechnology , optics , chemistry , chemical physics , physics
Phosphorescent dyes may lead to more efficient electroluminescent devices , since triplets should be formed in a 3‐fold excess compared to singlets. Efficient devices are presented here that have been constructed using phosphorescent dye–doped layers as both the electron transporting and emitting layer. Triplet energy transfer from the host Ir(ppy) 3 to the red phosphorescent dopant PtOX (see Figure) was observed directly.