| 掺杂聚合物薄膜黄绿发光二极管 |
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| 引用本文： | 许雪梅,刘碧兰,李新梅. 掺杂聚合物薄膜黄绿发光二极管[J]. 量子电子学报, 2002, 19(3): 269-272 |
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| 作者姓名： | 许雪梅 刘碧兰 李新梅 |
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| 作者单位： | 1. 中南大学应用物理与热能工程系,长沙,410083;湖南大学应用物理系,长沙,410082
2. 中南大学应用物理与热能工程系,长沙,410083 |
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| 摘 要： | 在具有电致发光的有机聚合物薄膜ｐｏｌｙ(２－ｍｅｔｈｙｏｘｙ－５－ｅｔｈｙｌｏｘｙ)－４－ｄｉ－(２－ｍｅｔｈｙｏｘｙ－５－ｏｃｔａｏｘｙ)－ｐｈｅｎｙｌｏｎｅ－ｖｉｎｙｌｅｎｅ(简称 ＭＥＭＯ－ＰＰＶ)中掺入一种高荧光量子效率的染料罗丹明６Ｇ(Ｒ６Ｇ),用旋转涂敷的方法获得了发光层,同时将其作为空穴传输层,以８－羟基＠$铝(８－Ａｌｑ３)作为电子传输层,得到了多层有机发光二极管ＩＴＯ/ＰＰＶ:Ｒ６Ｇ/Ａｌｑ３/Ａｌ．该器件峰值波长为５５０ｎｍ,发黄绿光．研究结果表明:不同掺杂浓度对器件发光光谱产生较大影响;通过掺杂,可显著提高器件的稳定性．在１８Ｖ下,器件的亮度达到３６００ｃｄ/ｍ２,外量子效率达３．２%．
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| 关 键 词： | 发光二极管 掺杂 黄绿发光 发光效率 寿命 |
| 文章编号： | 1007-5461(2002)03-0269-04 |
| 收稿时间： | 2001-04-12 |
| 修稿时间： | 2001-04-12 |
Yellow-green Electroluminescent Diode Based on Molecularly Doped Polymer |
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| Xu Xuemei,Liu Bilan,Li Xinmei. Yellow-green Electroluminescent Diode Based on Molecularly Doped Polymer[J]. Chinese Journal of Quantum Electronics, 2002, 19(3): 269-272 |
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| Authors: | Xu Xuemei Liu Bilan Li Xinmei |
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| Abstract: | The DC drived electro-luminescent device has a multilayer structure of ITO/ MEMO-PPV: R6G/Alq3/Al. Where MEMO-PPV [poly (2-methyoxy-5-ethyloxy)-4-di- (2- methyoxy-5-octaoxy) -phenylone vinylene] is the emitting layer as well as hole-transport layer, which achieved by means of rotation coating method. Rhodamine (R6G) is doped organic thin film. Alq3(8-hydroxy quinoline aluminium) is electron-transport layer. The wavelength of the device is 550 nm, where emission color is yellow-green. We find that the concentration of R6G has highly effects on the emission color, and show that dye doped device ITO/MEMO-PPV: R6G/Alq3/Al is more durable than undoped device ITO/MEMO-PPV/Alq3/Al. Its maximum luminance is 3600 cd/m2 at 18 V, with external quantum efficiency is 3.2%. |
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| Keywords: | light-emitting diodes doping yellow-green emission color luminescent efficiency lifetime |
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