Berlin 2018 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 7: Thin Film Properties: Structure, Morphology and Composition (XRD, TEM, XPS, SIMS, RBS, AFM, ...): Session I
DS 7.8: Vortrag
Montag, 12. März 2018, 17:00–17:15, H 2032
Defects investigation in black anatase — •Dmitry Zyabkin1, Juliana Schell3, Ulrich Vetter1, Haraldur Pall Gunnlaugsson3, Hilary Masenda2, Peter Schaaf1, and the ISOLDE Collaboration2 — 1Chair materials for Electronics, Institute of Materials Engineering and Institute of Micro- and Nanotechnologies MacroNano®, Gustav-Kirchhoff-Str. 5, 98693 Ilmenau, Germany — 2School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa — 3European Organization for Nuclear Research (CERN), CH-1211 Geneva, Switzerland
Black anatase has been considered as the promising material for dye-sensitized solar cells and efficient water splitting under light exposure [1]. While defects play the essential role in the enhanced photo-catalytic activity it has received plenty of attention to expand studies of their roles as well as further advancing of light absorption [2]. Thin films were obtained by means of reactive sputtering and treated at room and 573K temperatures. The current Mössbauer study was done on black anatase thin films at the ISOLDE mass separator at CERN. Implantation of 57Mn (T1/2 = 1.5 min) was accomplished at ion energies of 50 keV, with the measurements performed online within an interval from 301 to 735K. Hyperfine parameters are given relative to the centre of the spectrum of α-Fe at RT.
S.Zhang et al. Energy Environ. Sci., 2013,6, 1443-1464
F.Amano et al. J. Phys. Chem. C, 2016, 120 (12), pp 6467-6474