Red-green-blue light-emitting diodes containing fluorene-based copolymers

被引：21

作者：

Drolet, N

Beaupré, S

Morin, JF

Tao, Y

Leclerc, M ^{[1
]}

机构：

[1] Univ Laval, Ctr Rech Sci & Ingn Macromol, Dept Chim, Canada Res Chair Polymer Chem, Quebec City, PQ G1K 7P4, Canada

[2] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2002年 / 4卷 / 06期

关键词：

fluorene; conjugated copolymers; red-green-blue light-emitting diodes;

D O I：

10.1088/1464-4258/4/6/362

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper reports the fabrication and evaluation of light-emitting diodes using polyfluorene derivatives as emitter, which cover the entire visible spectral range. Depending on the composition of the copolymers, red (emission peak at 656 nm), green (488 nm) and blue (428 nm) emission was obtained without any excimer formation. The optimization of the device performances has been realized using a multilayered configuration which involves a spin-coated poly (ethylenedioxythiophene) doped with poly(styrene sulfonic acid) (PEDT-PSS) thin film on the ITO anode and an ultrathin lithium fluoride layer next to the Al cathode. These two layers improve the efficiency of the charge injection. Combining this device configuration with some additional charge-transporting molecules, luminances in the range of 50-300 cd m(-2) have been obtained.

引用

页码：S252 / S257

页数：6

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