量子电子学报, 2002, 19 (3): 269, 网络出版: 2006-05-15
掺杂聚合物薄膜黄绿发光二极管
Yellow-green Electroluminescent Diode Based on Molecularly Doped Polymer
发光二极管 掺杂 黄绿发光 发光效率 寿命 light-emitting diodes doping yellow-green emission color luminescent efficiency lifetime
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-羟基喹啉铝(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550 nm,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18 V下,器件的亮度达到3600 cd/m2,外量子效率达3.2%.
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%.
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. 许雪梅, 刘碧兰, 李新梅. Yellow-green Electroluminescent Diode Based on Molecularly Doped Polymer[J]. Chinese Journal of Quantum Electronics, 2002, 19(3): 269.
PDF全文
