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P‐133: Distinguished Student Paper: Highly Efficient Deep Blue Organic Light‐Emitting Device
Author(s) -
Lee MengTing,
Liao ChiHung,
Tsai ChihHung,
Chen Chin H.
Publication year - 2005
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2036569
Subject(s) - oled , common emitter , luminance , quantum efficiency , optoelectronics , dopant , materials science , fluorescence , layer (electronics) , optics , doping , nanotechnology , physics
We report a highly efficient deep blue organic light‐emitting device (OLED) incorporating a novel composite hole transport layer (c‐HTL) and an emitter based on the new fluorescent dopant BD1 in the stable host MADN which achieved a luminance efficiency of 5.4 cd/A with a Commission Internationale d'Eclairage (CIE x, y ) of (0.14, 0.13) and an external quantum efficiency of 5.1% at 20 mA/cm 2 and 6.8 V. We attribute the increased device efficiency to an improved balance between hole and electron currents arriving at the recombination zone.