CATHODYNE Cathodoluminescence

Cathodoluminescence is a spectroscopic method which allows the identification, on a local scale, of defects and impurities responsible for luminescence properties of a material bombarded by an electron gun. The wavelength of the detected photons is situated in the infrared (IR), visible and ultraviolet ({UV) domains of the electromagnetic spectrum.

Fields of application are microelectronics, semiconducting, insulating materials, geology and mineralogy.

The hardware:

  • Optical Microscope equipped with a camera.
  • A vacuum chamber containing the sample to be analysed.
  • Vacuum pump.
  • Electron gun.
  • Power supply controler.

Image Gallery:

Cathodyne under optical microscope
Granite under 17kV gun.
Green : Feldspath - Yellow : Calcite
Granite under white light
Cathodyne inside a SEM