TITLE

Influence of interlayer on the performance of stacked white organic light-emitting devices

AUTHOR(S)
Ping Chen; Qin Xue; Wenfa Xie; Guohua Xie; Yu Duan; Yi Zhao; Shiyong Liu; Liying Zhang; Bin Li
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p123307
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Stacked white organic light-emitting devices (WOLEDs) comprising of blue fluorescent and orange phosphorescent emissive units employing tri(8-hydroxyquinoline) aluminum (Alq3):Mg/MoO3 as charge generation layer are fabricated. The working mechanism of Alq3:Mg/MoO3 is also discussed using a simple method. We demonstrate charge-carrier separation takes place only in MoO3 layer. Stacked WOLED with better performance was obtained by adjusting the thickness of MoO3. The stacked WOLED with efficiency of 39.2 cd/A has excellent color stability with the Commission Internationale de l’Eclairage coordinates only changing from (0.407, 0.405) to (0.398, 0.397) when luminance increases from 22 to 10 000 cd/m2.
ACCESSION #
44374748

 

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