Highly efficient phosphor-converted white organic light-emitting diodes with moderate microcavity and light-recycling filters

被引：41

作者：

Cho, Sang-Hwan ^{[1
]}

Oh, Jeong Rok ^{[2
]}

Park, Hoo Keun ^{[2
]}

Kim, Hyoung Kun ^{[2
]}

Lee, Yong-Hee ^{[1
,3
]}

Lee, Jae-Gab ^{[4
]}

Do, Young Rag ^{[2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

[2] Kookmin Univ, Dept Chem, Seoul 136702, South Korea

[3] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol World Class Univ, Taejon 305701, South Korea

[4] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 02期

关键词：

ELECTROLUMINESCENCE; DEVICES;

D O I：

10.1364/OE.18.001099

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the combined effects of a microcavity structure and light-recycling filters (LRFs) on the forward electrical efficiency of phosphor-converted white organic light-emitting diodes (pc-WOLEDs). The introduction of a single pair of low- and high-index layers (SiO2/TiO2) improves the blue emission from blue OLED and the insertion of blue-passing and yellow-reflecting LRFs enhances the forward yellow emission from the YAG:Ce3+ phosphors layers. The enhancement of the luminous efficacy of the forward white emission is 1.92 times that of a conventional pc-WOLED with color coordinates of (0.34, 0.34) and a correlated color temperature of about 4800 K. (C) 2010 Optical Society of America

引用

页码：1099 / 1104

页数：6

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