| 利用CBP作为缓冲层增加有机发光器件的效率 |
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| 引用本文： | 杨惠山 姜文龙. 利用CBP作为缓冲层增加有机发光器件的效率[J]. 松辽学刊, 2005, 26(4): 3-5 |
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| 作者姓名： | 杨惠山 姜文龙 |
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| 作者单位： | [1]泉州师范学院物理系,福建泉州362000 [2]吉林师范大学信息技术学院,吉林四平136000 |
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| 摘 要： | 制备一种利用4，4′-N，N′-dicarbazole—biphenyl（CBP）作为超薄空穴注入缓冲层．CBP作为一种较好的缓冲材料，改善了有机发光器件的性能．CBP阻挡部分从阳极ITO注入到有机层NPB的空穴，从而平衡了空穴和电子的注入．有缓冲层的有机发光器件比没有缓冲层有机发光器件的电流效率有了明显的提高．当缓冲层CBP为4nm时，最大电流效率在8V时达到5．66cd／A，这是没有缓冲层器件电流效率的近1．5倍．
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| 关 键 词： | 有机发光器件 缓冲层 电流效率 |
| 文章编号： | 1000-1840-（2005）04-0003-03 |
| 收稿时间： | 2005-09-16 |
| 修稿时间： | 2005-09-16 |
Enhanced Current Efficiency in Organic Light - emitting Devices Using 4,4''''-N,N''''- dicarbazole- biphenyl Buffer Layers |
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| YA NG Hui-shan , JIA NG Wen-long. Enhanced Current Efficiency in Organic Light - emitting Devices Using 4,4''''-N,N''''- dicarbazole- biphenyl Buffer Layers[J]. Songliao Journal (Natural Science Edition), 2005, 26(4): 3-5 |
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| Authors: | YA NG Hui-shan JIA NG Wen-long |
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| Affiliation: | 1. Department of Physics, Quanzhou Normal University, Quanzhou 362000,China; 2.Colege of Electronic Information and Engineering, Jilin Normal University,Siping 136000, China |
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| Abstract: | An ultra - thin hole - injection buffer layer using 4,4' - N, N' - dicarbazole - biphenyl(CBP) in organic light - emitting devices has been fabricated. The CBP can be expected to be a good buffer layer material and thus enhance the emission performance of the organic light - emitting device. The CBP blocks part of the injected holes from the indium - tin - oxide (ITO) anode to the organic layer (NPB) and improves the balance of hole and electron injections. The current efficiency was comparatively improved compared with those of the device without the buffer layer. The highest luminous efficiency of the device with 4nm CBP act as buffer layer was achieved 5.66 cd/A, at 8V, which is nearly 1.5 times than that of the device without it. |
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| Keywords: | organic light emitting devices buffer layer current efficiency |
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