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Organic Light‐Emitting Diodes: Above 30% External Quantum Efficiency in Blue Phosphorescent Organic Light‐Emitting Diodes Using Pyrido[2,3‐ b ]indole Derivatives as Host Materials (Adv. Mater. 38/2013)
Author(s) -
Lee Chil Won,
Lee Jun Yeob
Publication year - 2013
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.201370237
Subject(s) - phosphorescence , oled , phosphorescent organic light emitting diode , quantum efficiency , diode , materials science , optoelectronics , blue light , light emitting diode , quantum , nanotechnology , optics , fluorescence , physics , layer (electronics) , quantum mechanics
High external quantum efficiencies of above 30% in blue phosphorescent organic light‐emitting diodes are demonstrated by Jun Yeob Lee and Chil Won Lee on page 5450 using novel pyridoindolebased bipolar host materials. This is the first work reporting above 30% external quantum efficiency in blue organic light‐emitting diodes and opens a way to enhance the external quantum efficiency of blue organic light‐emitting diodes up to a theoretical limit of 40%.