Synthesis and electroluminescence characterization of a new aluminium complex, [8- Hydroxyquinoline] Bis [2,2’Bipyridine] Aluminium Al(Bpy)2q |
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作者姓名: | Ritu Srivastav Punita Singh |
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作者单位: | National Physical Laboratory, New Delhi, 110022, India,National Physical Laboratory, New Delhi, 110022, India |
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摘 要: | We have synthesized and characterized a new electroluminescent material, [8-Hydroxyquinoline] Bis [2,2’Bipyridine] aluminium. Solution of this material Al(Bpy)2q in toluene showed absorption maxima at 380nm which was attributed to the moderate energy (π – π*) transitions of the aromatic rings. The photoluminescence spectrum of Al(Bpy)2q in toluene solution showed peak at 518 nm.This material shows thermal stability up to 3000C. The structure of the device is ITO/F4-TCNQ(1nm)/α-NPD(35nm)/Al(Bpy)2q(35nm)/ BCP(6nm)/Alq3(28nm)/LiF(1nm)/Al(150nm). This device exhibited a luminescence peak at 515 nm (CIE coordinates, x=0.32,y=0.49). The maximum luminescence of the device was 214 Cd/m2 at 21V. The maximum current efficiency of OLED was 0.12 Cd/A at 13V and maximum power efficiency was 0.03 lm/W at 10 volt.
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收稿时间: | 2015-05-25 |
修稿时间: | 2015-07-10 |
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