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%.
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