Preparation and characterization of TiO2/carbon nanowall composite on a transparent substrate

Mattia Pierpaoli, Aneta Lewkowicz, Mateusz Ficek, Maria Letizia Ruello, Robert Bogdanowicz


A transparent titanium dioxide and carbon nanowall composite (B-CNW/TiO2) material was fabricated by growing boron-doped carbon nanowalls (B-CNWs) on quartz glass with microwave plasma-enhanced chemical vapor deposition technique, followed by sol-gel deposition using titanium isopropoxide as a TiO2 precursor. Different layer thicknesses were fabricated. Samples were investigated by spectroscopic ellipsometry and UV-VIS spectroscopy. Results shows how the B-CNW thickness affects the optical transmittance, bandgap and electrical conductivity.

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  1. Wang, H., Quan, X., Yu, H. & Chen, S. Fabrication of a TiO2/carbon nanowall heterojunction and its photocatalytic ability. Carbon N. Y. 46, 1126–1132 (2008). CrossRef
  2. Fujishima, A., Zhang, X. & Tryk, D. A. TiO2 photocatalysis and related surface phenomena. Surf. Sci. Rep. 63, 515–582 (2008). CrossRef
  3. Pierpaoli, M., Giosuè, C., Ruello, M. L. & Fava, G. Appraisal of a hybrid air cleaning process. Environ. Sci. Pollut. Res. 24, 12638–12645 (2017). CrossRef
  4. Sobaszek, M. et al. Diamond Phase (sp3-C) Rich Boron-Doped Carbon Nanowalls (sp2-C): Physicochemical and Electrochemical Properties. J. Phys. Chem. C 121, 20821–20833 (2017). CrossRef
  5. Lewkowicz, A. et al. Thickness and structure change of titanium(IV) oxide thin films synthesized by the sol–gel spin coating method. Opt. Mater. (Amst). 36, 1739–1744 (2014). CrossRef
  6. Tauc, J. Optical properties and electronic structure of amorphous Ge and Si. Mater. Res. Bull. 3, 37–46 (1968). CrossRef

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
Published in cooperation with SPIE

ISSN: 2080-2242