Open AccessPhosphonate functionalized oxadiazole derivative as an efficient electron transporting material for solution-processed blue electrophosphorescent devices
Author(s) -
Jianhong Lü,
Zhihua Ma,
Bin Meng,
Dan Sui,
Baohua Zhang,
Zhiyuan Xie,
Xiabin Jing,
Fosong Wang,
Junqiao Ding,
Lixiang Wang
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.0a1241
Subject(s) - materials science , phosphonate , layer (electronics) , oxadiazole , phosphorescence , oled , brightness , luminous efficacy , optoelectronics , diode , polymer , dissolution , photochemistry , optics , fluorescence , nanotechnology , chemistry , organic chemistry , physics , composite material
An efficient electron transporting material, P-OXD (1,3-bis[(4-(4-diethylphosphoryl-butyl-phenyl))-1,3,4-oxidiazol-2-yl]phenylene), has been synthesized and thoroughly characterized. Due to its alcohol-soluble nature, P-OXD can be spin-coated atop the light emitting layer to form high quality film without dissolving the underlying layer. As a consequence, the double-layer blue electrophosphorescent device has been successfully fabricated, giving a peak luminous efficiency of 10.5 cd/A, and a maximum brightness of 8200 cd/m² with the Commission Internationale de L'Eclairage (CIE) coordinates of (0.16, 0.33). The promising results indicate that P-OXD has a potential application in solution-processed multilayer polymer light-emitting diodes.
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