TITLE

High efficiency blue phosphorescent organic light emitting diodes using a simple device structure

AUTHOR(S)
Jeon, Soon Ok; Yook, Kyoung Soo; Joo, Chul Woong; Lee, Jun Yeob
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/5/2009, Vol. 94 Issue 1, p013301
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
High efficiency blue phosphorescent organic light emitting diodes have been developed by using a simple device structure. A derivative of spirobifluorene based phosphine oxide was used both as a host and an electron transport layer with an exciton blocking function. A maximum quantum efficiency of 19.2% and a current efficiency of 37.2 cd/A were obtained by using a simple device structure without a hole blocking layer.
ACCESSION #
36178269

 

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