X-Ray Photolectron Spectroscopy (XPS/ESCA)

AVAILABLE FROM DECEMBER 2023

• Description

The X-ray photoelectron spectroscopy (XPS) or Electron Scattering for Chemical Analysis (ESCA) is a non-destructive technique for the chemical analysis of the elements (Z>2) present in the first 10nm of 'a sample. It is a unique technique for the chemical analysis of surfaces. The sample is excited by X-rays and this emits photoelectrons with different energies corresponding to the atomic orbital that emits them. According to the chemical environment of the atom, the energy of the emitted electrons changes slightly so that both the element and its chemical environment (with which other element it forms a bond) can be identified. The technique is qualitative and quantitative.

The technique can work in-operando in UHV (Ultra High Vacuum) or NAP (Near Ambient Pressure) conditions with a pressurized atmosphere of H2, O2 or CO2, both at room temperature and up to 900ºC. It has a high pressure chamber to perform treatments up to 20 bar and transfer the sample to the main chamber to be analyzed. It also has an evaporation chamber to deposit onto the sample and transfer it to the analysis chamber.

Samples can be of any type: powder (inorganic/organic), bulk (ceramics, sensors, metals, paints, thin layers) and liquid. It also allows samples to be introduced from a dry box or glove box.

• Tecnology

SPECS Provenx NAP System

• PHOIBOS 150 NAP analyzer, XPS and UPS compatible
• Monochromatic X-ray source μ-FOCUS 600 NAP (Al/Ag)
• 4-axis (X, Y, Z and tilt) FlexMan NAP sample manipulator with temperature control (-192º to 900ºC)
• NAP Backfilling analysis chamber (μ-metal)
• Storage chamber for up to 4 samples
• SpecsLab Prodigy and Prodigy ISQAR software
• EV2-220-000 quadrupole mass spectrometer (<200 amu)
• Three gas control system (O2, H2, CO2)
• Digital camera for observing the sample with a laser pointer
• Charge neutralizer Flood Gun FG 22/35
• UVS 300 ultraviolet spectroscopy source
• Ar ions source to erode the sample
• Evaporator EBE-4-2L2F for up to 4 different materials
• HPC 20 high pressure chamber up to 20 bar and 800ºC.

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• Samples to be analyzed

• Organic and inorganic solid samples (powder or bulk)
• Membranes and filters
• Capillaries and fibers
• Thin layers
• Electric boards
• Samples sensitive to the environment
• Single crystals
• Paints and coatings
• Catalysts