ENHANCED ELECTRON INJECTION IN ORGANIC ELECTROLUMINESCENCE DEVICES USING AN AL LIF ELECTRODE/

Authors
HUNG LS TANG CW MASON MG
Citation
Ls. Hung et al., ENHANCED ELECTRON INJECTION IN ORGANIC ELECTROLUMINESCENCE DEVICES USING AN AL LIF ELECTRODE/, Applied physics letters, 70(2), 1997, pp. 152-154
Citations number
16
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
70
Issue
2
Year of publication
1997
Pages
152 - 154
Database
ISI
SICI code
0003-6951(1997)70:2<152:EEIIOE>2.0.ZU;2-G
Abstract
A bilayer is used as an electrode for organic electroluminescent devic es. The bilayer consists of an ultrathin LiF layer adjacent to an elec tron-transporting layer and an aluminum outerlayer. Devices with the b ilayer electrode showed enhanced electron injection and high electrolu minescence efficiency as compared with a Mg0.9Ag0.1 cathode. Similar e ffects were observed when replacing MgO for LiF. The improvements are attributed to band bending of the organic layer in contact with the di electrics. (C) 1993 American Institute of Physics.