Study on the rubrene emission sensitized by a phosphorescent Ir compound in the host of CBP

摘要：

To obtain the maximum luminous efficiency from an organic material, it is necessary to harness both the spin-symmetric and anti-symmetric molecular excitations (bound electron-hole pairs, or excitons) that result from electrical pumping. Here, we demonstrate that this deficiency can be overcome by using a phosphorescent sensitizer to excite a fluorescent dye. The photoluminescence and sensitization effect between tris (2-phenylpyridine) iridium (Ir(ppy)3) and 5,6,11,12tetraphenylnaphthacene (rubrene) in the host of 4,4N,N-dicarbazole-biphenyl (CBP) were investigated. The energy transfer characteristics in the electroluminescent process of the system of CBP, Ir (ppy)3 and Rubrene has been discuss in this article. The Ir(ppy)3 sensitizer affords an effective way to improve the device performance. In the organic lightemitting diodes based on the lr(ppy)3, rubrene and CBP system, both the singlet and triplet excitons can be used.

关键词： organle light-emitting diodes (OLEDs) fluorescence phosphorescence exciton

作者: Denghui Xu Xiong Li

作者单位: School of Mechanical Engineering Beijing Technology and Business University Beijing, P. R. China, 100048

会议类型: 国际会议

会议名称: 2010 International Conference on Nano Science and Technology(2010年IEEE纳米科技国际会议 ICNST2010)

会议地点: 成都

会议语种:英文

页码: 42-45

在线出版日期: 2010-12-17（万方平台首次上网日期，不代表论文的发表时间）