Nanowire Conductive Polymer Gas Sensor Patterned Using Self-Assembled Block Copolymer Lithography
Nanowire Conductive Polymer Gas Sensor Patterned Using Self-Assembled Block Copolymer Lithography
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DOI：
10.1021/nl802099k
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发表时间：
2008-11-01
期刊：
影响因子：
10.8
通讯作者：
Ross, C. A.
中科院分区：
文献类型：
--
作者：
Jung, Yeon Sik;Jung, WooChul;Ross, C. A.
纳米结构共轭有机薄膜是高度集成有机器件的重要组成部分。我们展示了通过使用蚀刻掩模来大面积制造一系列有序的 15 nm 宽导电聚合物纳米线，该蚀刻掩模由限制在形貌模板中的圆柱体形成聚（苯乙烯-b-二甲基硅氧烷）二嵌段共聚物的自组装图案组成。聚（3,4-乙烯二氧噻吩）：聚（苯乙烯磺酸盐）纳米线可用作乙醇蒸气传感器，这表明有机薄膜的电子特性在图案化过程中得以保留。与相同厚度的无图案薄膜相比，对乙醇蒸汽的敏感性更高，这归因于纳米线阵列的表面积与体积比的提高。
Nanostructured conjugated organic thin films are essential building blocks for highly integrated organic devices. We demonstrate the large-area fabrication of an array of well-ordered 15 nm wide conducting polymer nanowires by using an etch mask consisting of self-assembled patterns of cylinder-forming poly(styrene-b-dimethylsiloxane) diblock copolymer confined in topographic templates. The poly(3,4-ethylenedi-oxythiophene):poly(styrenesulfonate) nanowires operated as an ethanol vapor sensor, suggesting that the electronic properties of the organic film were preserved during the patterning processes. The higher sensitivity to ethanol vapor, compared to an unpatterned film with the same thickness, was attributed to the enhanced surface-to-volume ratio of the nanowire array.