학술논문
Synthesis of Self-Assembled Randomly Oriented VO2Nanowires on a Glass Substrate by a Spin Coating Method
Document Type
Article
Author
Source
Inorganic Chemistry; November 2020, Vol. 59 Issue: 21 p15707-15716, 10p
Subject
Language
ISSN
00201669; 1520510X
Abstract
Randomly oriented vanadium dioxide (VO2) nanowires were produced on a glass substrate by spin coating from a cosolvent. SEM studies reveal that highly dense VO2nanowires were grown at an annealing temperature of 400 °C. X-ray diffraction (XRD) provides evidence of the high crystallinity of the VO2nanowires-embedded VO2thin films on the glass substrate at 400 °C. Characterization by high-resolution transmission electron microscopy (HR-TEM) confirmed the formation of VO2nanowires. The optical band gap of the nanowires-embedded VO2thin films was also calculated from the transmittance data to be 2.65–2.70 eV. The growth mechanism of the solution-processed semiconducting VO2nanowires was proposed based on both solvent selection and annealing temperature. Finally, the solar water splitting ability of the VO2nanowires-embedded VO2thin films was demonstrated in a photoelectrochemical cell (PEC).