Dip-Coating Self-Assembly Fabrication and Polarization Sensitive Photoresponse of Aligned Single-Walled Carbon Nanotube Film

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 2; p. 490
• Main Authors: Zhang, Jiazhen, Yang, Luhan, Xu, Huang, Zhou, Jie, Sang, Yuxiang, Cui, Zhuangzhuang, Liu, Changlong, Liu, Jingjing, Guo, Tianle, Wang, Xingjun, Wang, Lin, Chen, Gang, Chen, Xiaoshuang
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.01.2022; MDPI
• Subjects: aligned single-walled carbon nanotubes; aqueous suspension; Arrays; Carbon; Chemical vapor deposition; dip-coating; Lasers; Nanotubes; negative photo response; Plasma etching; polarimetry; Scanning electron microscopy; self-assembly; Solvents; Spectrum analysis; Surfactants; Thin films; China; aqueous suspension; polarimetry; self-assembly; dip-coating; negative photo response; aligned single-walled carbon nanotubes
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s22020490

It is challenging to obtain wafer-scaled aligned films for completely exploiting the promising properties of semiconducting single-walled carbon nanotubes (s-SWCNTs). Aligned s-SWCNTs with a large area can be obtained by combining water evaporation and slow withdrawal-induced self-assembly in a dip-coating process. Moreover, the tunability of deposition morphology parameters such as stripe width and spacing is examined. The polarized Raman results show that s-SWCNTs can be aligned in ±8.6°. The derived two terminal photodetector shows both a high negative responsivity of 41 A/W at 520 nm and high polarization sensitivity. Our results indicate that aligned films with a large area may be useful to electronics- and optoelectronics-related applications.