Niu Siqi, Yang Wenbin, Wei Heng, Danilov Michail, Rusetskyi Ihor, Popat Ketul C, Wang Yao, Kipper Matt J, Belfiore Laurence A, Tang Jianguo
Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
V.I. Vernadskii Institute of General and Inorganic Chemistry of the Ukrainian NAS, 32/34 Palladin avenue, 03142 Kyiv, Ukraine.
Nanomaterials (Basel). 2022 Oct 14;12(20):3604. doi: 10.3390/nano12203604.
In this work, a new photovoltaic device was prepared. The device uses titanium (Ti) foil/TiO nanotubes as the photoanode and multi-walled carbon nanotubes (MWCNTs) as a photosensitizer. Titanium dioxide nanotube arrays (TiO-NTs) were prepared by one-step anodic oxidation. Cut-MWCNTs with a length of less than 100 nm were obtained by the mixed-acid oxidation of MWCNTs. The two materials were combined to form a TiO-NTs@cut-MWCNT heterostructure by electrophoresis. TiO-NTs@cut-MWCNTs were characterized by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), which showed that the two materials were effectively combined. We fabricated the heterostructure into a photovoltaic device, showing an enhanced photocurrent response and an efficiency of 0.0138%, and explained this phenomenon by performing UV-vis absorption spectroscopy and electrochemical tests. It is hoped that this work can provide a reference value for the application of carbon nanotubes in photovoltaic devices.
在这项工作中，制备了一种新型光伏器件。该器件使用钛（Ti）箔/TiO纳米管作为光阳极，多壁碳纳米管（MWCNTs）作为光敏剂。通过一步阳极氧化制备了二氧化钛纳米管阵列（TiO-NTs）。通过对MWCNTs进行混合酸氧化获得了长度小于100nm的切割MWCNTs。通过电泳将这两种材料结合形成TiO-NTs@切割MWCNT异质结构。通过场发射扫描电子显微镜（FESEM）和X射线衍射（XRD）对TiO-NTs@切割MWCNTs进行了表征，结果表明这两种材料有效结合。我们将该异质结构制成光伏器件，其显示出增强的光电流响应和0.0138%的效率，并通过进行紫外可见吸收光谱和电化学测试对该现象进行了解释。希望这项工作能为碳纳米管在光伏器件中的应用提供参考价值。
