Enhanced photoelectrochemical performance of {001}TiO2/{001}SrTiO3 epitaxial heterostructures
作者： Qianqian Shang , Tao Yu , Xin Tan , Zhiyang Zhang , Yunling Zou
DOI: 10.1007/S10008-015-2995-4
关键词:
摘要: The anatase TiO2 films with controllable {001} highly reactive facets were fabricated on {001}SrTiO3 substrate various total work pressure (TWP) by direct current facing-target magnetron sputtering (DCFTMS). X-ray diffraction (XRD), scanning electron microscopy (SEM), surface roughness tester (SRT), and photoelectron spectroscopy (XPS) employed to confirmed the influence of different TWPs interface TiO2/SrTiO3 heterostructured epitaxial preferred growth {001}TiO2 facet. mechanisms enhanced photoelectrochemical properties explored transient photocurrent (TP), current–potential (I–V), cyclic voltammetry (CV), polarization (Tafel), electrochemical impedance (EIS), Mott–Schottky (M–S) curves, which can be ascribed formation high-quality heterojunction between thin film substrate, suppress recombination photogenerated electron–hole pairs effectively.
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