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- W4233823662 abstract "The authors demonstrate a considerable increase in the current efficiency of Ir(piq)2(acac)-doped phosphorescent red organic light-emitting diodes (OLEDs) in which a thin 1,3-bis[2-(2,2'-bipyridin-6-yl)-1,3,4-oxadiazol-5-yl]benzene (Bpy-OXD) layer acts as a cleaving layer. When a 5 nm Bpy-OXD layer divides the emitting layer (EML) into two sub-EMLs, the Ir(piq)2(acac)-doped phosphorescent red OLEDs show significantly increased luminance and current efficiency (a maximum luminance of 9830 cd/m2, corresponding to a current efficiency of 4.36 cd/A) compared with the conventional phosphorescent red OLEDs without this thin Bpy-OXD cleaving layer. We can attribute this improvement mainly to the balance of carrier injection in the double emitting layer and increased the utilization rate of the excitons." @default.
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- W4233823662 date "2011-04-01" @default.
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- W4233823662 title "High-Efficiency Electrophosphorescence Red Organic Light-Emitting Diodes Using a Thin 1,3-Bis[2-(2,2'-bipyridin-6-yl)-1,3,4-oxadiazol-5-yl]benzene Cleaving Layer in an Ir-Complex-Doped Emitter Layer" @default.
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- W4233823662 doi "https://doi.org/10.7567/jjap.50.04dk19" @default.
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