TITLE

Mechanisms of injection enhancement in organic light-emitting diodes through insulating buffer

AUTHOR(S)
Zhao, J. M.; Zhan, Y. Q.; Zhang, S. T.; Wang, X. J.; Zhou, Y. C.; Wu, Y.; Wang, Z. J.; Ding, X. M.; Hou, X. Y.
PUB. DATE
June 2004
SOURCE
Applied Physics Letters;6/28/2004, Vol. 84 Issue 26, p5377
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Three types of organic light-emitting diodes are fabricated. Tris-8-hydroxyquinoline aluminum (Alq3) is used as an electron-transporting layer (ETL) and sodium stearate (NaSt) as an electron-injecting buffer. The optimal thickness of NaSt for electron injection is different for cathodes of different metals, such as Mg, A1, and Ag. This is attributed to the different work functions of cathodes, which result in different initial barrier heights for electron injection from cathodes into ETL, and explained based on tunneling theory.
ACCESSION #
13495691

 

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