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High‐Performance Blue Phosphorescent OLEDs Using Energy Transfer from Exciplex
Author(s) -
Seino Yuki,
Sasabe Hisahiro,
Pu YongJin,
Kido Junji
Publication year - 2014
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/adma.201304253
Subject(s) - oled , phosphorescence , excimer , materials science , common emitter , optoelectronics , energy transfer , photochemistry , nanotechnology , optics , fluorescence , molecular physics , chemistry , physics , layer (electronics)
An efficient energy transfer from an exciplex between a sulfone and an arylamine derivatives to a blue phosphorescent emitter enables OLED performances among the best, of over 50 lm W −1 at 100 cd m −2 . The formation of the exciplex realizes a barrier‐free hole–electron recombination pathway, thereby leading to high OLED performances with an extremely low driving voltage of 2.9 V at 100 cd m −2 .
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