Stacked white organic light emitting devices consisting of separate red, green, and blue elements

被引：62

作者：

Qi, Xiangfei ^{[1
]}

Slootsky, Michael ^{[1
]}

Forrest, Stephen ^{[2
,3
,4
]}

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 19期

关键词：

indium compounds; lithium; molybdenum compounds; organic compounds; organic light emitting diodes;

D O I：

10.1063/1.3021014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a white organic light-emitting device where individual red, green, and blue (R, G, and B) phosphorescent organic light-emitting devices are vertically stacked and electrically interconnected by a compound MoO3/Li-doped charge generation layer. For the order of B, G, and R cells positioned relative to the indium tin oxide anode, the device yields a peak total external quantum efficiency (EQE) and power efficiency (PE) of eta(ext)=(36 +/- 2)% at a current density of J=82 mu A/cm(2) and eta(p)=21 +/- 1 lm/W at J=17 mu A/cm(2), respectively. The EQE and PE of the device roll off to (32 +/- 2)% and 13 +/- 1 lm/W at 1000 cd/m(2), corresponding to J=2 mA/cm(2). At this luminance, the device shows Commission Internationale de L'Eclairage chromaticity coordinates of (0.45, 0.36) and a color rendering index of 63.

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页数：3

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