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Deeper Understanding of Interstitial Boron-Doped Anatase Thin Films as A Multifunctional Layer Through Theory and Experiment

DOI: 10.1021/acs.jpcc.7b11142 DOI Help

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.

Subject Areas: Chemistry

Technical Areas: