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What information can XPS give? 


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XPS can provide information about the elemental composition of surfaces, including the chemical state of the elements, binding energy of electron states, thickness of layers near the surface, density of electronic states, and uniformity of elemental composition across the surface and as a function of depth . It can also yield information about the structure, surface termination, built-in electric potentials, and band offsets of films and heterostructures . XPS spectra can be used to identify chemical species at a surface through peak positions and shapes, and the intensities in the spectra can be used to obtain information on the concentration and distribution of chemical species . XPS features can provide insights into the properties and electronic structure of materials, and can be related to underlying chemical and physical phenomena .

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Book ChapterDOI
Md. Abdul Aziz, A.F. Ismail 
01 Jan 2017
19 Citations
XPS can provide information on the elements present in a sample and can also elucidate the chemical state or environment of the sample. It can determine atomic compositions, carbon bonding, presence of electron withdrawing groups, and degree of cross-linking in polymer membranes. It can also provide information on the hydrophobicity and hydrophilicity of materials.
Book ChapterDOI
11 Sep 2018
2 Citations
XPS can provide information about the chemical state of elements in a sample, binding energy of electron states, thickness of layers near the surface, density of electronic states, and uniformity of elemental composition.
XPS spectra can provide information about the properties, electronic structure, and chemical phenomena of the material studied.
XPS can provide information on the chemical composition of a surface and the depth distribution of chemical species.
XPS can provide information about the average composition, presence of contaminants, film structure, surface termination, built-in electric potentials, and band offsets of epitaxial films and heterostructures.

Related Questions

What is xps?3 answersX-ray photoelectron spectroscopy (XPS) is a technique used for surface characterization and analysis of materials, including polymers and biomedical materials. It provides a quantitative elemental analysis of the top few nanometers of a solid surface. XPS requires five basic components: an x-ray source, a sample holder, a kinetic energy analyzer, an electron detector, and an ultra-high vacuum system. The analyzer separates the photoelectrons emitted by the sample based on their kinetic energy, similar to how a monochromator separates light based on wavelength in a spectrophotometer. XPS can induce changes in the chemical state of elements, which may affect the understanding of their environmental behavior. For example, X-ray irradiation can lead to a negative shift in the U 4f spectra, indicating a break in uranyl molecules or photocatalytic reduction to U(IV) species. XPS is a widely used technique in material surface analysis, but its results can be subject to operator arbitrariness. Core-level XPS is particularly useful for investigating the electronic states of strongly correlated electron systems.
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