NDLI: Facile Fabrication of Single-Walled Carbon Nanotube/Anatase Composite Thin Film on Quartz Glass Substrate for Translucent Conductive Photoelectrode

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Facile Fabrication of Single-Walled Carbon Nanotube/Anatase Composite Thin Film on Quartz Glass Substrate for Translucent Conductive Photoelectrode

Content Provider	MDPI
Author	Suwazono, Yutaka Murayoshi, Takuro Nagai, Hiroki Sato, Mitsunobu
Copyright Year	2021
Description	A single-walled carbon nanotube/anatase (SWCNT/anatase) composite thin film with a transmittance of over 70% in the visible-light region was fabricated on a quartz glass substrate by heat treating a precursor film at 500 °C in air. The precursor film was formed by spin coating a mixed solution of the titania molecular precursor and well-dispersed SWCNTs (0.075 mass%) in ethanol. The anatase crystals and $Ti^{3+}$ ions in the composite thin films were determined by X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The effect of the heating process on the SWCNTs was analyzed using Raman spectroscopy. The composite film showed an even surface with a scratch resistance of 4H pencil hardness, as observed using field-emission scanning electron microscopy and atomic force microscopy. The electrical resistivity and optical bandgap energy of the composite thin film with a thickness of 100 nm were 6.6 × $10^{−2}$ Ω cm and 3.4 eV, respectively, when the SWCNT content in the composite thin film was 2.9 mass%. An anodic photocurrent density of 4.2 μA $cm^{−2}$ was observed under ultraviolet light irradiation (16 mW $cm^{−2}$ at 365 nm) onto the composite thin film, thus showing excellent properties as a photoelectrode without conductive substrates.
Starting Page	3352
e-ISSN	20794991
DOI	10.3390/nano11123352
Journal	Nanomaterials
Issue Number	12
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-12-10
Access Restriction	Open
Subject Keyword	Nanomaterials Photoelectrode Single-walled Carbon Nanotube/titania Composite Conductive Thin Film Molecular Precursor
Content Type	Text
Resource Type	Article

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