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High‐Performance Green OLEDs Using Thermally Activated Delayed Fluorescence with a Power Efficiency of over 100 lm W −1
Author(s) -
Seino Yuki,
Inomata Susumu,
Sasabe Hisahiro,
Pu YongJin,
Kido Junji
Publication year - 2016
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.201503782
Subject(s) - oled , materials science , excimer , fluorescence , electrical efficiency , optoelectronics , energy conversion efficiency , power (physics) , optics , nanotechnology , physics , layer (electronics) , quantum mechanics
A green organic light‐emitting device (OLED) with an extremely high power efficiency of over 100 lm W −1 is realized through energy transfer from an exciplex. An optimized OLED showed a maximum external efficiency of 25.7%, and a power efficiency of 79.4 lm W −1 at 1000 cd m −2 , which is 1.6‐times higher than that of state‐of‐the‐art green thermally activated delayed fluorescence (TADF) OLEDs.