Efficient electron injection in organic light-emitting diodes using lithium quinolate/ CaAl cathodes

Sung Hyun Kim, Jyongsik Jang, Jun Yeob Lee

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Device performances of green devices with cathode structure of lithium quinolate (Liq) CaAl were investigated and electron injection mechanism was studied using ultraviolet photoelectron spectroscopy. Power efficiency could be improved by 70% by using LiqCaAl cathode structure due to efficient electron injection, and interfacial energy barrier lowering by LiqCaAl metal cathode was observed.

Original languageEnglish
Article number103501
JournalApplied Physics Letters
Volume91
Issue number10
DOIs
StatePublished - 2007
Externally publishedYes

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