Paper Info
Title
Multilayer cathode for organic light-emitting devices.
Abstract
A thin layer of samarium (Sm) was introduced in the cathode fabrication of the organic light-emitting devices (OLEDs). An efficient cathode Sm/LiF/Al used to improve the performance of OLEDs was reported. Standard N,N′-bis(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl 4,4′-diamine (NPB)/tris-(8-hydroxyquinoline) aluminum (AlQ) devices with Sm/LiF/Al cathode showed dramatically enhanced electroluminescent (EL) brightness and efficiency. The optimized device with the 0.5nm layer of Sm with the cathode structure of Sm/LiF/Al showed the improved power efficiency of 40% than the control device of the conventional LiF/Al cathode at 100mA/cm2. The drive voltage of the device with the Sm/LiF/Al cathode was decreased about 2V at 500mA/cm2 compared with the conventional LiF/Al cathode device. The enhanced properties of the device with such a multilayer cathode are considered to the improved balance of electron/hole injection in the emitting layer.
Year
DOI
Venue
2008
10.1016/j.displa.2007.09.015
Displays
Keywords
Field
DocType
Organic light-emitting devices (OLEDs),Electroluminescence (EL),Exciton
OLED,Optics,Engineering,Thin film,Organic electronics,Cathode,Optoelectronics,Fabrication,Electroluminescence,Electron,Samarium
Journal
Volume
Issue
ISSN
29
4
0141-9382
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Xiufang Li121.59
Zhenbo Deng276.20
Zheng Chen332.07
Yu-meng Shi432.22
Denghui Xu575.52