High-efficiency white OLEDs based on small molecules

被引：22

作者：

Hatwar, TK ^{[1
]}

Spindler, JP ^{[1
]}

Ricks, ML ^{[1
]}

Young, RH ^{[1
]}

Hamada, Y ^{[1
]}

Saito, N ^{[1
]}

Mameno, K ^{[1
]}

Nishikawa, R ^{[1
]}

Takahashi, H ^{[1
]}

Rajeswaran, G ^{[1
]}

机构：

[1] Eastman Kodak Co, Rochester, NY 14650 USA

来源：

ORGANIC LIGHT-EMITTING MATERIALS AND DEVICES VII | 2004年 / 5214卷

关键词：

organic electroluminescence; white emission; light-emitting diode; full color display;

D O I：

10.1117/12.514536

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eastman Kodak Company and SANYO Electric Co., Ltd. recently demonstrated a 15" full-color, organic light-emitting diode display (OLED) using a high-efficiency white emitter combined with a color-filter array. Although useful for display applications, white emission from organic structures is also under consideration for other applications, such as solid-state lighting, where high efficiency and good color rendition are important. By incorporating adjacent blue and orange emitting layers in a multi-layer structure, highly efficient, stable white emission has been attained. With suitable host and dopant combinations, a luminance yield of 20 cd/A and efficiency of 8 lm/W have been achieved at a drive voltage of less than 8 volts and luminance level of 1000 cd/m(2). The estimated external efficiency of this device is 6.3% and a high level of operational stability is observed. To our knowledge, this is the highest performance reported so far for white organic electroluminescent devices. We will review white OLED technology and discuss the fabrication and operating characteristics of these devices.

引用

页码：233 / 240

页数：8

共 16 条

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