Mixed host organic light-emitting devices with low driving voltage and long lifetime

被引：98

作者：

Lee, JH

Wu, CI

Liu, SW

Huang, CA

Chang, Y

机构：

[1] Natl Taiwan Univ, Grad Inst Electroopt Engn, Taipei, Taiwan

[2] Natl Taiwan Univ, Dept Elect Engn, Taipei, Taiwan

[3] Acad Sinica, Inst Chem, Taipei 115, Taiwan

[4] Chang Gung Univ, Dept Mech Engn, Tao Yuan, Taiwan

[5] RiTdisplay Corp, Hsinchu, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 10期

关键词：

D O I：

10.1063/1.1879093

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we present and analyze the device performance of the mixed host(MH) organic light-emitting devices (OLEDs). The host of the emitting layer (EML) material in this device consists of a hole transport layer. (HTL) and an electron transport layer (ETL) fabricated by coevaporation. The bipolar transport characteristic of the MH layer helps to reduce the driving voltage. Device lifetime is increased due to the elimination of the sharp boundary of the HTL/EML interface. Combining the MH structure with a high mobility electron ETL material, bis(10-hydroxybenzo[h]qinolinato)beryllium, the OLED has shown a brightness of 27 600 cd/m(2) at a driving voltage of 5 V, and a lifetime four times longer than that of a conventional OLED. (c) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 12 条

[1] Local order in amorphous organic molecular thin films [J].