High External Quantum Efficiency Red Phosphorescent Light-Emitting Devices

摘要：

We report the fabrication of high-efficiency organic light-emitting diodes employing a novel red phosphor by managing charge transport properties of every functional layer. Doped hole transport layer and stepwise carrier transport system were utilized to enlarge charge injection, improve transportation and reduce drive voltage. The devices turned on at quiet low voltages of about 3~4 V. A high power efficiency of 10.63 lm/W and a stable red emission at 616 nm (chromaticity coordinate: x=0.63, y=0.35) was obtained. Especially, the maximal external quantum efficiency reached 15.5％ at 18.62 cd/m2.

关键词： component Red OLEDs phosphor high-efficiency external quantum efficiency

作者: Fangfang Yu Minyan Zhang Yuzhu Shang Bin Wei Chong Li

作者单位: School of Materials Science and Engineering, Shanghai Univ. Key Lab. Adv. Disp. Sys. Appl., Ministry Institute of Advanced Materials,Nanjing University of Posts and TelecommunicationsNanjing 210046, Ch

会议类型: 国际会议

会议名称: 2011 International Conference on Electronics and Optoelectronics(2011电子学与光电子学国际会议 ICEOE 2011)

会议地点: 大连

会议语种:英文

页码: 1019-1021

在线出版日期: 2011-07-29（万方平台首次上网日期，不代表论文的发表时间）