Patterning of light-emitting conjugated polymer nanofibres
Patterning of light-emitting conjugated polymer nanofibres
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DOI：
10.1038/nnano.2008.232
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发表时间：
2008-10-01
影响因子：
38.3
通讯作者：
Pisignano, Dario
中科院分区：
文献类型：
--
作者：
Di Benedetto, Francesca;Camposeo, Andrea;Pisignano, Dario
有机材料通过其加工性，柔韧性和低成本彻底改变了光电子，并将其应用于光发射设备的全彩色屏幕（1），太阳能电池（2）和激光器（3,4）。一些低维的有机半导体结构表现出类似于无机物质的特性，例如极化发射（5）和增强的电致发光（6）。一维金属，III-V和II-VI纳米结构也已成为激烈研究（7,8）作为纳米电子和光子学的基础。鉴于一维聚合物纳米结构（例如聚合物纳米纤维）与亚波长度体积内的亚微米构图能力（9）和电磁限制兼容（8），它们可以为纳米级光源提供有机光源的益处。在这里，我们报告了完全共轭的电纺聚合物纳米纤维的光学特性。我们评估它们在整个可见范围内的波动性能和排放可调性。我们通过使用室温纳米印刷光刻的印记周期性纳米结构来展示纤维正向发射的增强，并研究了不同极化的发射光的角度分散。
Organic materials have revolutionized optoelectronics by their processability, flexibility and low cost, with application to light-emitting devices for full-colour screens(1), solar cells(2) and lasers(3,4). Some low-dimensional organic semiconductor structures exhibit properties resembling those of inorganics, such as polarized emission(5) and enhanced electroluminescence(6). One-dimensional metallic, III-V and II-VI nanostructures have also been the subject of intense investigation(7,8) as building blocks for nanoelectronics and photonics. Given that one-dimensional polymer nanostructures, such as polymer nanofibres, are compatible with sub-micrometre patterning capability(9) and electromagnetic confinement within subwavelength volumes(8), they can offer the benefits of organic light sources to nanoscale optics. Here we report on the optical properties of fully conjugated, electrospun polymer nanofibres. We assess their waveguiding performance and emission tuneability in the whole visible range. We demonstrate the enhancement of the fibre forward emission through imprinting periodic nanostructures using room-temperature nanoimprint lithography, and investigate the angular dispersion of differently polarized emitted light.