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Phosphorescent OLEDs: Sky‐Blue Phosphorescent OLEDs with 34.1% External Quantum Efficiency Using a Low Refractive Index Electron Transporting Layer (Adv. Mater. 24/2016)
Author(s) -
Shin Hyun,
Lee JeongHwan,
Moon ChangKi,
Huh JinSuk,
Sim Bomi,
Kim JangJoo
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.201670165
Subject(s) - oled , materials science , optoelectronics , phosphorescence , refractive index , layer (electronics) , diode , quantum efficiency , optics , fluorescence , nanotechnology , physics
J.‐J. Kim and co‐workers achieve highly efficient blue organic light‐emitting diodes (OLEDs) using a low‐refractive‐index layer. As described on page 4920, an external quantum efficiency over 34% is achieved, owing to the low refractive index of the materials. A milepost and a shining entrance of the castle are the metaphor indicating the way to highly efficient blue OLEDs. On the way to the castle, the depicted chemical structures serve as the light‐emitting layer.