| MoO3为缓冲层的高效非掺杂蓝色有机发光二极管 |
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| 引用本文： | 倪蔚德,吴有智,张文林,张材荣,张定军.MoO3为缓冲层的高效非掺杂蓝色有机发光二极管[J].发光学报,2011,32(12):1271-1275. |
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| 作者姓名： | 倪蔚德 吴有智 张文林 张材荣 张定军 |
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| 作者单位： | 1. 甘肃省有色金属新材料省部共建国家重点实验室, 兰州理工大学 材料科学与工程学院, 甘肃 兰州 730050;
2. 兰州理工大学理学院 应用物理系, 甘肃 兰州 730050 |
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| 基金项目： | 甘肃省自然科学基金(1010RJZA035);教育部留学回国人员科研启动基金(第40批);国家自然科学基金(11164015,11164016)资助项目 |
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| 摘 要： | 以典型蓝色发光材料-联苯乙烯衍生物(4,4’-bis(2,2’-diphenylvinyl) -1,1’-biphenyl,DPVBi)为发光层,采用MoO3为阳极缓冲层制备了结构简单的非掺杂型蓝色有机电致发光器件.在电流密度为20 mA/cm2、MoO3缓冲层厚度为0.5 nm对器件效率约为无缓冲层器件效率的18倍,...
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| 关 键 词： | 有机电致发光 蓝色 阳极缓冲层 MoO3 |
| 收稿时间： | 2011-09-01 |
Highly Efficient Nondoped Blue Organic Light-emitting Diode Using MoO3 as Anode Buffer Layer |
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| NI Wei-de,WU You-zhi,ZHANG Wen-lin,ZHANG Cai-rong,ZHANG Ding-jun.Highly Efficient Nondoped Blue Organic Light-emitting Diode Using MoO3 as Anode Buffer Layer[J].Chinese Journal of Luminescence,2011,32(12):1271-1275. |
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| Authors: | NI Wei-de WU You-zhi ZHANG Wen-lin ZHANG Cai-rong ZHANG Ding-jun |
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| Institution: | 1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, School of Materials Science & Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. Department of Applied Physics, Shcool of Science, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | Contact properties between electrodes and organic layers play a key role for the performance of an organic device. Ohmic contacts at electrode/organic interfaces are required for an ideal device. In order to improve performance of 4,4'-bis(2,2'-diphenylvinyl)-1,1'-biphenyl (DPVBi, a typical blue organic luminescent material) based organic light-emitting diode, MoO3 was introduced at anode interface as a buffer layer and a highly efficient bright nondoped blue electroluminescent device with low driving voltage was fabricated. Luminescent efficiency of the device with a 0.5-nm-thick MoO3 buffer layer is 18 times higher than that of the device without buffer layer, and 1.2 times higher than that of the device with a conventional copper phthalocyanine (CuPc) buffer layer at a current density of 20 mA/cm2. Turn-on voltage, maximum external quantum efficiency and luminance of the device are 3.3 V, 3.1% and 16000 cd/m2, respectively. Commission Internationale de l'Eclairage (CIE) co-ordinates are (0.15, 0.15). Realization of excellent device performance is attributed to formation of ohmic contact between anode and organics by insertion of MoO3. |
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| Keywords: | luminescence organic electroluminescence blue anode buffer layer MoO3 |
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