Topic
Chemical state
About: Chemical state is a research topic. Over the lifetime, 2378 publications have been published within this topic receiving 78183 citations.
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TL;DR: In this article, angle-resolved synchrotron radiation photoemission spectroscopy (ARPES) was used to investigate the interfacial chemical structure of HfO2/Si (100).
Abstract: Interfacial chemical structure of HfO2/Si (100) is investigated using angle-resolved synchrotron radiation photoemission spectroscopy (ARPES). The chemical states of Hf show that the Hf 4f binding energy changes with the probing depth and confirms the existence of Hf-Si-O and Hf-Si bonds. The Si 2p spectra are taken to make sure that the interfacial structure includes the Hf silicates, Hf silicides and SiOx. The metallic characteristic of the Hf-Si bonds is confirmed by the valence band spectra. The depth distribution model of this interface is established.
6 citations
TL;DR: In this article, a two-step oxidation mechanism was proposed for the blackening process by carefully examining the experimental results, and the results showed that the resulting velvet copper oxide films consisted of Cu 2 O/CuO duplex oxides.
6 citations
TL;DR: In this paper, a new method to characterize the chemical state or environment of phosphorus segregated or piled up at theSiO 2 /Si interface has been developed by utilizing the resonant Auger decay process.
6 citations
Journal Article•
TL;DR: In this paper, the authors used X-ray photo-electron spectroscopy to determine the chemical state of the sulfur species present in fly-ash samples produced by burning a number of pulverized coal samples under reducing conditions in a continuous combustion furnace.
Abstract: The method of X-Ray Photo-electron Spectroscopy is used to determine the chemical state of the sulfur species present in fly-ash samples produced by burning a number of pulverized coal samples under reducing conditions in a continuous combustion furnace. The influence of submicron metallic constituents present in the flue-gases of the pyrometallurical systems on the state of the sulfur species emitted from the burning chamber and produced on the surface of ZnO particulates is thiosulfate. This material, which is relatively stable at the normal workroom conditions, is not as toxic as previously seen metallic sulfur compounds produced under oxidizing conditions.
6 citations
TL;DR: In this article, Sb adsorption processes on In/Si(111) √ 3 × √3 and √ 31 × ∛31 surfaces were investigated, and the dynamic growth behavior was observed with low energy electron microscopy (LEEM) and the local surface structure change was monitored with selected area low-energy electron diffraction.
Abstract: Sb adsorption processes on In/Si(111) √3 × √3 and √31 × √31 surfaces were investigated in the present work. The dynamic growth behavior was observed with low energy electron microscopy (LEEM), and the local surface structure change was monitored with selected area low energy electron diffraction (LEED). X-ray generated photo emission electron microscopy using synchrotron radiation (SR-XPEEM) was employed in order to see the variation of the chemical state on the surface. On both √3 x √3 and √31 × √31 surfaces, Sb adsorption induces the surface structural change and modifies the chemical interaction of In atoms with Si. In atoms are replaced by impinged Sb atoms, and the discharged In atoms form islands.
6 citations