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X-ray photoelectron spectroscopy (XPS)

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**X-ray photoelectron spectroscopy (XPS)**

What is X-ray photoelectron spectroscopy (XPS)?

X-ray photoelectron spectroscopy (XPS) is a surface-sensitive quantitative spectroscopic technique that measures the elemental composition, chemical state, and electronic state of the elements within a material. XPS spectra are obtained by irradiating a material with a beam of X-rays and simultaneously measuring the kinetic energy and number of electrons that escape from the top 0-10 nm of the material being analyzed. XPS is commonly used to analyze the surface chemistry of materials, identify the elements present, and determine their oxidation states.

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