Highly polarized polymer light-emitting diodes utilizing friction-transferred poly(9,9-dioctylfluorene) thin films
Highly polarized polymer light-emitting diodes utilizing friction-transferred poly(9,9-dioctylfluorene) thin films
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DOI：
10.1063/1.2142082
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发表时间：
2005-12-12
影响因子：
4
通讯作者：
Yase, K
中科院分区：
文献类型：
--
作者：
Misaki, M;Ueda, Y;Yase, K
利用摩擦转移的聚（9，9-二辛基芴）（PFO）薄膜构建了偏振聚合物发光二极管（PLED）。摩擦转移技术允许取向的PFO直接沉积到氧化铟锡阳极上，而不需要取向层如聚酰亚胺。偏振吸收光谱和光致发光光谱表明，聚合物主链在摩擦方向上高度对齐。我们制作的PLED组成的摩擦转移PFO作为发射层，真空沉积浴铜灵作为电子传输和空穴阻挡层，和真空沉积的LiF/Al阴极。从PLED中观察到具有31的积分偏振比和高达300 cd/m（2）的亮度的高度偏振的蓝色发射。(c)2005年美国物理学会。
Polarized polymer light-emitting diodes (PLEDs) have been constructed utilizing friction-transferred poly(9,9-dioctylfluorene) (PFO) thin films. The friction transfer technique allows oriented PFO to be deposited directly onto an indium tin oxide anode without an alignment layer such as polyimide. Polarized absorption and photoluminescence spectra revealed that the polymer backbones are highly aligned in the friction direction. We fabricated PLEDs consisting of friction-transferred PFO as an emissive layer, vacuum-deposited bathocuproine as an electron transport and hole-blocking layer, and a vacuum-deposited LiF/Al cathode. Highly polarized blue emission with an integrated polarization ratio of 31 and a luminance of up to 300 cd/m(2) was observed from the PLEDs. (c) 2005 American Institute of Physics.