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| X-Ray Photoelectron Spectroscopy (XPS) |
| ThermoScientific ESCALAB 250 X-ray Photoelectron Spectrometer |
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Instrument Calendar:
XPS provides:
- Identification of all elements (except H and He) present in the outermost 100Å of a surface in concentrations > 0.1 atomic %
- Determination of the elemental surface composition (±10%)
- Information on lateral variation in composition (resolution ˜ 150µm)
- Information about the molecular environment (oxidation state, bonding atoms, etc.)
- Also known as Electron Spectroscopy for Chemical Analysis (ESCA)
Typical Applications:
- Identification of organic groups using derivatization
- Nondestructive elemental depth profiles
- Destructive elemental depth profiles several thousand Å into the sample
- Variable temperature analysis
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