X-ray Photoelectron Spectroscopy - Chemical States From XPS Analyses

Chemical States From XPS Analyses

The ability to produce Chemical State information from the topmost 1-12 nm of any surface makes XPS a unique and invaluable tool for understanding the chemistry of any surface either, as received, or after physical or chemical treatment(s). Because modern systems use monochromatic X-ray sources, XPS measurements leave the surface free of any degradation with few exceptions.

Chemical state analysis of the surface of polymers readily reveals the presence or absence of the chemical states of carbon known as: carbide (C 2-), hydrocarbon (C-C), alcohol (C-OH), ketone (C=O), organic ester (COOR), carbonate (CO3), fluoro-hydrocarbon (CF2-CH2), trifluorocarbon (CF3).

Chemical state analysis of the surface of a silicon wafer readily reveals the presence or absence of the chemical states of silicon known as: n-doped silicon, p-doped silicon, silicon suboxide (Si2O), silicon monoxide (SiO), Si2O3, silicon dioxide (SiO2).

Read more about this topic:  X-ray Photoelectron Spectroscopy

Famous quotes containing the words chemical, states and/or analyses:

    “If Thought is capable of being classed with Electricity, or Will with chemical affinity, as a mode of motion, it seems necessary to fall at once under the second law of thermodynamics as one of the energies which most easily degrades itself, and, if not carefully guarded, returns bodily to the cheaper form called Heat. Of all possible theories, this is likely to prove the most fatal to Professors of History.”
    —Henry Brooks Adams (1838–1918)

    “Action from principle, the perception and the performance of right, changes things and relations; it is essentially revolutionary, and does not consist wholly with anything which was. It not only divides States and churches, it divides families; ay, it divides the individual, separating the diabolical in him from the divine.”
    —Henry David Thoreau (1817–1862)

    “The more one analyses people, the more all reasons for analysis disappear. Sooner or later one comes to that dreadful universal thing called human nature.”
    —Oscar Wilde (1854–1900)