Enhanced light sensing performance of a hybrid device developed using as-grown vertically aligned multiwalled carbon nanotubes on TCO substrates
Enhanced light sensing performance of a hybrid device developed using as-grown vertically aligned multiwalled carbon nanotubes on TCO substrates
复制标题
使用 TCO 基板上生长的垂直排列多壁碳纳米管开发的混合器件的增强光传感性能
DOI：
10.1039/c4ra07833k
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发表时间：
2014
期刊：
影响因子：
3.9
通讯作者：
A. R. Pal
中科院分区：
文献类型：
--
作者：
M. Baro;A. Hussain;A. R. Pal
我们报告了一套多功能的等离子体为基础的方法，直接生长垂直排列的多壁碳纳米管（MWCNT）和MWCNT为基础的混合复合材料的透明导电氧化物（TCO）基板。通过使用脉冲直流PECVD技术，在450 °C下生长短长度垂直取向的MWCNT。多壁碳纳米管均匀分布在TCO基底上，平均直径和长度分别为49 ± 9 nm和208 ± 26 nm。垂直生长的MWCNT的面密度高达7 × 109 cm-2。生长参数被仔细地改进以平衡管尺寸和密度。已经努力合成基于MWCNT的混杂复合材料。合成的复合材料的结构，形态和光学性能进行了讨论。然后利用所制造的基于MWCNT的混合复合材料来显示其在自供电混合光电探测器中的适用性。有趣的是，该光电探测器在非常低的入射功率密度下（约5.5 μW cm−2）显示出增强的光响应。利用一个完全干燥的路线的合成和制造的多壁碳纳米管为基础的混合复合材料出现作为一个成功的策略，适合于混合纳米复合材料为基础的先进设备。
We report a suite of versatile plasma based methods for direct growth of vertically aligned multi-walled carbon nanotubes (MWCNTs) and MWCNT based hybrid composites on transparent conducting oxide (TCO) substrates. By using a pulsed dc PECVD technique, short length vertically aligned MWCNTs are grown at 450 °C. The MWCNTs are uniformly distributed on TCO substrates with an average diameter and length of 49 ± 9 nm and 208 ± 26 nm, respectively. The area density of the vertically grown MWCNTs is as high as 7 × 109 cm−2. The growth parameters are carefully refined to balance the tube dimension and density. Efforts have been made to synthesize MWCNTs based hybrid composites. The synthesized composites are discussed in terms of structural, morphological and optical properties. The as-fabricated MWCNT based hybrid composite is then utilized to show its applicability in a self-powered hybrid photodetector. Interestingly, the photodetector shows an enhanced photoresponse at a very low incident power density of ∼5.5 μW cm−2. Utilization of a completely dry route for the synthesis and fabrication of MWCNT based hybrid composites emerge as a successful strategy suitable for hybrid nanocomposite material based advanced devices.