Improved Carrier Transfer in Red Organic Light Emitting Diodes Doped with Rubrene
Improved Carrier Transfer in Red Organic Light Emitting Diodes Doped with Rubrene
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DOI：
10.1088/0256-307x/19/4/338
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发表时间：
2002-04
影响因子：
3.5
通讯作者：
Liu Hong-yu;Gao Wen-bao;Yang Kai-xia;Liu Shi-yong
中科院分区：
文献类型：
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作者：
Liu Hong-yu;Gao Wen-bao;Yang Kai-xia;Liu Shi-yong
制备了ITO/NPB/Alq3：Rubrene：DCM/Alq3/LiF/Al红色有机电致发光二极管。该器件采用N，N‘-二(1-萘基)-N，N’-二苯基-1，1‘-联苯-4，4’-二胺(NPB)作为空穴传输层，三(8-喹啉)铝(Alq3)作为电子传输层，掺杂5，6，11，12-四苯基萘(Rubrene)和4-dicyanomethylene-2-methyl-6-(p-dimethyla-minostyryl)-4H-pyran(DCM)的Alq3作为发射层。当Rubrene的掺杂浓度为6%，DCM的掺杂浓度为4%时，有效地提高了器件的红色纯度。实验现象被解释为改进的载流子从Rubrene到DCM转移的结果。
A red organic light emitting diode doped with rubrene is constructed with the configuration of ITO/NPB/Alq3:rubrene:DCM/Alq3/LiF/Al. In the device, N,N'-bis-(1-naphthl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) is used as the hole-transporting layer, tris(8-quinolinolato) aluminium (Alq3) as the electron-transporting layer and Alq3 doped with 5,6,11,12-tetraphenylnaphthacene (rubrene) and 4-dicyanomethylene-2-methyl-6-(p-dimethyla-minostyryl)-4H-pyran (DCM) as the emitting layer. When the doping concentration of rubrene is 6% and that of DCM is 4%, red purity of the device is improved effectively. The experimental phenomena are explained as the result of the improved carrier transfer from rubrene to DCM.