Influence of Doping Concentrations in White Organic Light-emitting Diodes based on Phosphorescent Iridium Complexes

摘要：

Phosphorescent white organic light-emitting diodes (PhWOLEDs) based on blue (Firpic) and yellow (t-bt)2Ir(acac) phosphorescent emitters with various doping concentration were reported. A PhWOLED with high performance characteristics has been obtained when the doping concentration for Firpic and (t-bt) 2Ir (acac) is 8 wt％ and at 6 wt％, respectively. The Commission Internationale delEclairage (CIE) coordinates of the optimal PhWOLED is (0.333, 0.416) at 10 V. The high performance of the optimized PhWOLED is attributed to effective host-guest energy transfer and efficient exciton recombination combining with suppressed exciton-quenching process in the emitting layers.

关键词： Phosphorescent white organic light-emitting diodes dying concentration charge-trapping

作者: Xia Lei Junsheng Yu Yadong Jiang

作者单位: State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Optoelectronic Information,University of Electronic Science and Technology of China (UESTC),Chengdu,CO 610054 Peoples Republic of China

会议类型: 国际会议

会议名称: 2011 IEEE International Conference on Smart Grid and Clean Energy Technologies(2011 IEEE智能电网与清洁能源技术国际会议 ICSGCE2011)

会议地点: 成都

会议语种:英文

页码: 377-379

在线出版日期: 2011-09-27（万方平台首次上网日期，不代表论文的发表时间）