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Characterization Facilities

VTEC

Vacuum & Temperature Electronic Characterization

Ultra High Vacuum (UHV) chamber equipped with scroll and turbomolecular pumps with a graphite heater for temperature in the range 77 K (liquid Nitrogen) - 1300 K

 

  • Thermionic Emission

  • Photoemission Spectroscopy

  • UHV Field Emission

  • Photoconductivity (200-1300 nm)

  • I-V and C-V curves (Keithley and HP Instr.)

  • Impedance Spectroscopy (HP and Solartron)

Photoconductivity

 

 

Four Point Probe

The custom system core is a small vacuum chamber equipped with rotative pump and (optionally) turbo pumps. The four point probe has been fabricated to measure sheet resistance and resistivity of samples in a temperature range up to 400° C. Current and voltage are applied and measured by means of Keithley 8220 current source and 6543 nanovoltmeter. Measurements can be performed in a constant gas flux. 

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