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Organic Light Emitting Diodes with an Organic Acceptor/Donor Interface Involved in Hole Injection 下载免费PDF全文
Organic light emitting diodes with an interface of organic acceptor 3-, 4-, 9-,10-perylenetetracarboxylic dianhydride (PTCDA) and donor copper phthalocyanine (CuPc) involved in hole injection are fabricated. As compared to the conventional device using a 5 nm CuPc hole injection layer, the device using an interface of 10nm PTCDA and 5 nm CuPc layers shows much lower operating voltage with an increase of about 46% in the maximum power efficiency. The enhanced device performance is attributed to the efficient hole generation at the PTCDA/CuPc interface. This study provides a new way of designing hole injection. 相似文献
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The performance enhancement in organic light-emitting diode using a semicrystalline composite for hole injection 下载免费PDF全文
A semicrystalline composite, 3, 4, 9, 10 perylenetetracarboxylic dianhydride (PTCDA) doped N,N'-di(1-naphthyl)- N,N'-diphenylbenzidine (NPB), has been fabricated and characterized. An organic light-emitting diode using such a composite in hole injection exhibits the improved performance as compared with the reference device using neat NPB in hole injection. For example, at a luminance of 2000 cd/m2, the former device gives a current efficiency of 2.0cd/A, higher than 1.6cd/A obtained from the latter device. Furthermore, the semicrystalline composite has been shown thermally to be more stable than the neat NPB thin film, which is useful for making organic light emitting diodes with a prolonged lifetime. 相似文献
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Organic light emitting diodes using magnesium doped organic acceptor as electron injection layer and silver as cathode 下载免费PDF全文
Organic light emitting diodes employing magnesium doped electron
acceptor 3, 4, 9, 10 perylenetetracarboxylic dianhydride
(Mg:PTCDA) as electron injection layer and silver as cathode were
demonstrated. As compared to Mg:Ag cathode, the combination of
the Mg:PTCDA layer and silver provided enhanced electron
injection into tris (8-quinolinolato) aluminium. The device with
1:2 Mg:PTCDA and Ag showed an increase of about 12% in the
maximum current efficiency, mainly due to the improved hole-electron
balance, and an increase of about 28% in the maximum power
efficiency, as compared to the control device using Mg:Ag
cathode. The properties of Mg:PTCDA composites were studied as
well. 相似文献
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Organic Light-Emitting Diodes with Magnesium Doped CuPc as an Efficient Electron Injection Layer 下载免费PDF全文
Bright organic electroluminescent devices are developed using a metal-doped organic layer intervening between the cathode and the emitting layer. The typical device structure is a glass substrate/indium-tin oxide (ITO)/copper phthalocyanine (CuPc)/N,N'-bis-(1-naphthl)-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB)/Tris(8-quinolinolato) aluminum(Alq3)/Mg-doped CuPc/Ag. At a driving voltage of 11 V, the device with a layer of Mg-doped CuPc (1:2 in weight) shows a brightness of 4312cd/m^2 and a current efficiency of 2.52cd/A, while the reference device exhibits 514 cd/m^2 and 1.25 cd/A. 相似文献
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