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Deeper understanding of interstitial boron-doped anatase thin films as a multifunctional layer through theory and experiment
Authors:
Miguel
Quesada-Gonzalez
(University College London)
,
Benjamin A. D.
Williamson
(University College London)
,
Carlos
Sotelo-Vazquez
(University College London)
,
Andreas
Kafizas
(Imperial College London)
,
Nicolas D.
Boscher
(Luxembourg Institute of Science and Technology)
,
Raul
Quesada-Cabrera
(University College London)
,
David O.
Scanlon
(University College London; Diamond Light Source)
,
Claire J.
Carmalt
(University College London)
,
Ivan P.
Parkin
(University College London)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
The Journal Of Physical Chemistry C
State:
Published (Approved)
Published:
December 2017
Abstract: Thin films of interstitial boron-doped anatase TiO2, with varying B concentrations, were deposited via one-step atmospheric pressure chemical vapor deposition (APCVD) on float glass substrates. The doped films showed a remarkable morphology and enhanced photoactivity when compared to their undoped analogues. The TiO2:B films also presented enhanced conductivity and electron mobility as measured by a Hall effect probe as well as a high adherence to the substrate, stability and extended lifetime. The structure and composition of the different samples of TiO2:B films were studied by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and dynamic secondary ion mass spectrometry (D-SIMS). Hybrid density functional theory was used to explore the defect chemistry of B-doped anatase and to understand the experimental results.
Journal Keywords: Thin films; Oxides; Boron; Defects; Minerals
Diamond Keywords: Photocatalysis
Subject Areas:
Chemistry,
Materials,
Physics
Technical Areas:
Added On:
04/01/2018 13:52
Discipline Tags:
Surfaces
Physics
Physical Chemistry
Catalysis
Chemistry
Materials Science
interfaces and thin films
Technical Tags: