基于溶液法制备的高效率磷光有机发光二极管

发布时间：2018-05-04 01:16

本文选题：溶液法 + 高效率　；参考：《半导体光电》2016年04期

【摘要】：溶液法制备的有机发光二极管(OLED)虽然有着制作成本低、材料利用率高以及容易大规模生产等优势,但是在器件效率上离传统高温真空热蒸镀法制作的OLED还有很大差距。文章基于一种新型的磷光发光材料Ir(tfmppy)_2(tpip),在利用单一主体材料溶液法制备OLED时发现器件效率不高,同时效率滚降很大。为了提高器件效率,同时减小效率滚降,以多种材料混合作为主体材料。通过改变混合主体材料间的比例关系,以一种简单的器件结构,采用溶液法制作出了高效率的OLED器件。其中,以质量比为7∶21∶12的PVK∶mCP∶TCTA为混合主体材料,掺杂质量比为10%的Ir(tfmppy)_2(tpip)作为发光层的器件,取得了高达55cd/A的电流效率。
[Abstract]:Although the organic light-emitting diode (Ole) prepared by solution method has the advantages of low cost, high material utilization and easy mass production, the device efficiency is still far from that of the traditional high-temperature vacuum thermal evaporation method. Based on a new phosphorescent material, Irtfmppytir, it is found that the device efficiency is not high and the efficiency rolling down is very high when the OLED is prepared by the solution method of single host material. In order to improve the device efficiency and reduce the efficiency rolling down, the multi-material mixture is used as the main material. By changing the proportion relationship between the mixed host materials, a simple device structure is used to fabricate a high efficiency OLED device by solution method. Among them, PVK:mCP:TCTA with 7:21:12 mass ratio as the main material and Irtfmppypipa with doping mass ratio of 10% as the device of luminescent layer, the current efficiency up to 55cd/A is obtained.
【作者单位】：上海交通大学电子工程系TFT-LCD关键材料及技术国家工程实验室光电材料与器件中心;
【基金】：国家自然科学基金项目(61377030)
【分类号】：TN383.1

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