期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 16, 期 2, 页码 230-232出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2010.01.059
关键词
Organic light-emitting bistable devices; Multilevel switching; High on/off ratio
Bistable memory performances of organic light-emitting diodes (OLEDs) with LiF/Al cathode were investigated and the origin of bistability was studied. LiF was essential to get stable memory performances in OLEDs and on/off ratio was improved by more than 50 times by using LiF/Al instead of Al cathode. High on/off ratio over 1000 was obtained from switching test and the multilevel switching of organic light-emitting bistable devices (OLEBDs) was realized by changing the writing voltage of OLEBDs. AlF3 formation at the interface during evaporation of Al was proposed as the main mechanism for bistability of OLEBDs. (C) 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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