White electrophosphorescence from semiconducting polymer blends

被引:239
作者
Gong, X [1 ]
Ma, WL
Ostrowski, JC
Bazan, GC
Moses, D
Heeger, AJ
机构
[1] Univ Calif Santa Barbara, Inst Polymers & Organ Solids, Santa Barbara, CA 93106 USA
[2] Univ Calif Santa Barbara, Mitsubishi Chem Ctr Adv Mat, Santa Barbara, CA 93106 USA
[3] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
关键词
D O I
10.1002/adma.200306230
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
White emission from polymer light-emitting diodes (PLEDs) is demonstrated using semiconducting polymers blended with organometallic emitters and spin-cast from solution. Because a single semiconducting polymer was used as the common host for red, green, and blue emission, the color coordinates, color temperatures, and color rendering indices of the white emission are insensitive to the brightness, applied voltage, and applied current density. The PLEDs have luminous efficiency of 4.3 cd A(-1) and luminance of 223 cd m(-2) at current density of 5.2 mA cm(-2) (V = 14 V): at 17 V, L = 1.2 x 10(4) cd m(-2).
引用
收藏
页码:615 / +
页数:6
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