Improving the Luminous Efficiency of Organic Light Emitting Diodes using a Modulated Doping Hole Injection Layer
Modulated doping of 2,3,5,6-tetrafluoro-7,7,8,8- tetracyano-quinodimethane (F4-TCNQ) in a hole injection layer (HIL) of 4,4,4-tris(N-3-methylphenyl-N-phenyl- amino)-triphenylamine(m-MTDATA) was investigated. The device fabricated with an indium -tin-oxide (ITO)/ m-MTDATA:x％ F4-TCNQ /N-di( naphthalen-1-yl)-N,N-diphenyl-benzidine (NPB)/ Tris-(8-hydroxyquinolinato) aluminum(III) (Alq3)/LiF/Al structure was optimized by adjusting the doping concentration and region in HIL to enhance devices efficiency and luminance. 4, 7-dipheny1-1, 10- phenanthroline (Bphen) is used as a hole blocking layer (HBL). Moreover, F4-TCNQ is inserted in the m-MTDATA to study the emission characteristics of OLEDs. The OLED having an efficiency up to 12 cd/A is achieved in the study.
Shui-Hsiang Su Cheng-Chieh Hou Chih-Kai Chang Zheng-Wei Huang Meiso Yokoyama
Department of Electronic Engineering, I-Shou University, Kaohsiung Country, Taiwan, China
国际会议
The Sixth International Workshop on Junction Technology(第六届国际结技术研讨会)
上海
英文
2006-05-15（万方平台首次上网日期，不代表论文的发表时间）