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Energy band alignment of HfO2 on Ge
Journal of Applied Physics, 2006The band alignment of hafnium oxide films grown on Ge (100) by atomic layer deposition has been investigated by x-ray photoelectron spectroscopy (XPS) and internal photoemission (IPE) spectroscopy. HfO2 films have been grown using HfCl4 as hafnium precursor while O3 or H2O have been used as oxygen precursors.
Perego M, Seguini G, Fanciulli M
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Band alignment at SrCu2O2/ZnO heterointerface
Journal of Applied Physics, 2009SrCu 2 O 2 / ZnO interface is interesting for application in blue and UV light emission devices. Measurements of the valence band offset at SrCu2O2/ZnO interface using photoelectron spectroscopy result in an offset of 2.0 eV (cliff), meaning that the interface band gap is reduced to 1.4 eV. Blue and UV light emission observed previously can be attained
I. Konovalov, R. Hesse
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Band alignment in ZrSiO4/ZnO heterojunctions
Vacuum, 2016Abstract We have measured the band offsets of sputtered ZrSiO 4 on bulk ZnO wafers using X-Ray Photoelectron Spectroscopy and obtained the bandgaps of these two materials using reflection electron energy loss spectroscopy. The valence band offset was determined to be −0.60 eV ± 0.04 eV for ZrSiO 4 on ZnO, while the respective bandgaps were 3.22 eV ...
David C. Hays +4 more
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Band alignment at the organic-inorganic interface
Applied Physics Letters, 2000The band alignment of the bithiophene interface with a diverse range of substrates has been determined by a combination of ultraviolet photoemission and work function measurements. Not only is vacuum level alignment clearly shown to be invalid but also any sort of linear relationship between band alignment and substrate work function is shown not to be
G. Koller +4 more
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HAXPES Measurements of Heterojunction Band Alignment
2015Heterojunctions, the abrupt change of materials at interfaces, are an integral feature of modern electronic devices. The alignment of electronic energy levels at a heterojunction can be used to tailor charge transfer across the interface, for example to improve carrier injection or to block leakage current.
Conan Weiland +2 more
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Band alignments of the platinum/SrBi2Ta2O9 interface
Applied Physics Letters, 1997In situ x-ray photoelectron spectroscopy was used to determine the band alignments of the platinum to SrBi2Ta2O9 contact. The interfaces were prepared by incremental evaporation of Pt onto a vacuum/O2 annealed polycrystalline surface grown by the sol-gel method. The results track the development of the band alignments from the submonolayer to the thick
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2010 International Students and Young Scientists Workshop "Photonics and Microsystems", 2010
Lukasz Starzyk +2 more
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Lukasz Starzyk +2 more
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Band alignment of rutile and anatase TiO₂.
Nature materials, 2013The most widely used oxide for photocatalytic applications owing to its low cost and high activity is TiO₂. The discovery of the photolysis of water on the surface of TiO₂ in 1972 launched four decades of intensive research into the underlying chemical and physical processes involved. Despite much collected evidence, a thoroughly convincing explanation
David O, Scanlon +14 more
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