White-light-emitting material for organic electroluminescent devices

被引:180
作者
Hamada, Y
Sang, T
Fujii, H
Nishio, Y
Takanashi, H
Shibata, K
机构
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1996年 / 35卷 / 10B期
关键词
electroluminescence; white emission; complex; light-emitting diode; organic material; chelate metal complex;
D O I
10.1143/JJAP.35.L1339
中图分类号
O59 [应用物理学];
学科分类号
摘要
White emission is important for applying organic EL devices to full-color displays and backlighting. In order to obtain white emission, the use of a white-light-emitting material which shows the white emission by itself is advantageous for these applications because of its high reliability and productivity. A device structure of indium-tin-oxide (ITO, anode)/hole transport layer/emitting layer/MgIn alloy (cathode) was employed. Bis(2-(2-hydroxyphenyl)benzothiazolate)zinc (Zn(BTZ)(2)) was used as the emitting material. Zn(BTZ)(2) showed greenish-white emission with a broad electroluminescent spectrum (half-width: 157 nm, peak wavelength: 486, 524 nm). It exhibited a high luminance of 10, 190 cd/m(2) at the applied voltage of 8 V because Zn(BTZ)(2) has a good electron-transport property. As such, Zn(BTZ)(2) is expected to serve as a new white-light-emitting material for organic EL devices.
引用
收藏
页码:L1339 / L1341
页数:3
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