Carbon nanotube woven textile photodetector
Carbon nanotube woven textile photodetector
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DOI：
10.1103/physrevmaterials.2.015201
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发表时间：
2018-01
影响因子：
3.4
通讯作者：
A. Zubair;Xuan Wang;F. Mirri;D. Tsentalovich;Naoki Fujimura;D. Suzuki;K. Soundarapandian;Y. Kawano;M. Pasquali;J. Kono
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文献类型：
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作者：
A. Zubair;Xuan Wang;F. Mirri;D. Tsentalovich;Naoki Fujimura;D. Suzuki;K. Soundarapandian;Y. Kawano;M. Pasquali;J. Kono
人们对移动和可穿戴技术的兴趣日益浓厚，要求通过结合多功能材料的复杂结构来增强服装的功能。基于有机材料的柔性电子和光子器件在过去十年中取得了令人瞩目的进步，但需要更高的性能、更简单的制造，最重要的是与编织技术的兼容性。在这里，我们报告了一种基于高度排列碳纳米管的掺杂工程纤维的编织、无基板和偏振敏感光电探测器的开发。这种室温操作的自供电探测器通过光热电效应响应从紫外线到太赫兹的超宽光谱范围内的辐射，在整个范围内具有低噪声等效功率（几个${\mathrm{nW}/\mathrm{Hz}}^{1/2}$），并且$ZT$因子值是之前报道的基于碳纳米管的光热电探测器的两倍光电探测器。特别是，我们制作了一个由数十个 ${p}^{+}\text{\ensuremath{-}}{p}^{\ensuremath{-}}$ 结点组成的 $\ensuremath{\sim}1$-m 长的装置，并将其编织成一件衬衫。该装置展示了串联结在全局照明下的集体光响应。通过 200 次弯曲半径小于 100 $\ensuremath{\mu}\mathrm{m}$ 的弯曲测试以及标准洗涤和熨烫周期，该设备的性能没有出现任何恶化的迹象。这种非常规的光电探测器将在需要检测电磁辐射的可穿戴技术中找到应用。
The increasing interest in mobile and wearable technology demands the enhancement of functionality of clothing through incorporation of sophisticated architectures of multifunctional materials. Flexible electronic and photonic devices based on organic materials have made impressive progress over the past decade, but higher performance, simpler fabrication, and most importantly, compatibility with woven technology are desired. Here we report on the development of a weaved, substrateless, and polarization-sensitive photodetector based on doping-engineered fibers of highly aligned carbon nanotubes. This room-temperature-operating, self-powered detector responds to radiation in an ultrabroad spectral range, from the ultraviolet to the terahertz, through the photothermoelectric effect, with a low noise-equivalent power (a few ${\mathrm{nW}/\mathrm{Hz}}^{1/2}$) throughout the range and with a $ZT$-factor value that is twice as large as that of previously reported carbon nanotube-based photothermoelectric photodetectors. Particularly, we fabricated a $\ensuremath{\sim}1$-m-long device consisting of tens of ${p}^{+}\text{\ensuremath{-}}{p}^{\ensuremath{-}}$ junctions and weaved it into a shirt. This device demonstrated a collective photoresponse of the series-connected junctions under global illumination. The performance of the device did not show any sign of deterioration through 200 bending tests with a bending radius smaller than 100 $\ensuremath{\mu}\mathrm{m}$ as well as standard washing and ironing cycles. This unconventional photodetector will find applications in wearable technology that require detection of electromagnetic radiation.