TITLE

Praseodymium oxide coated anode for organic light-emitting diode

AUTHOR(S)
Qiu, Chengfeng; Chen, Haiying; Xie, Zhiliang; Wong, Man; Kwok, Hoi Sing
PUB. DATE
May 2002
SOURCE
Applied Physics Letters;5/13/2002, Vol. 80 Issue 19, p3485
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Capping an indium–tin–oxide anode with a thin layer of praseodymium oxide (Pr[sub 2]O[sub 3]) has been found to enhance not only hole-injection, quantum, and power efficiencies but also the lifetime of organic light-emitting diode made using copper (II) phthalocyanine as the anode buffer layer, N, N[sup ′]-diphenyl-N,N[sup ′] bis(3-methylphenyl-1,1[sup ′]-biphenyl-4,4[sup ′]-diamine as the hole-transport layer and tris-8-hydroxyquinoline aluminum as the electron-transport/emission layer. The best results have been obtained on diodes with ∼1 nm thick Pr[sub 2]O[sub 3]. A possible mechanism behind the improvement is discussed. © 2002 American Institute of Physics.
ACCESSION #
6630293

 

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