Photoluminescence

Photoluminescence spectroscopy (PL) is a powerful optical method used for characterizing semiconductor materials. PL is based on shining light on sample: upon light absorption an electron-hole pair is created: an electron from the valence band jumps to the conduction band leaving a hole. The photon emitted upon recombination corresponds to the energy-difference between the valence and conduction bands and is hence lower in energy than the excitation photon. PL can be used to find:

HORIBA Scientific is a world leader in optical spectroscopy, with benefits of more than 50 years of innovation in the technique. PL characterization allows valuable insights into the properties of semiconductor materials such as group IV semiconductors, compound semiconductors, 2D materials, and their devices.
 

	LabRAM Soleil	LabRAM Odyssey Semiconductor	SMS
Wavelength range	300-1600 nm	200 nm-2200 nm	250 – 14000 nm
Lasers	Up to 4 built in fully motorized and computer controlled	Up to 6 fully motorized	Up to 3, semi-motorized
Sample size acceptance	8”	12”	12”
Detector	Open Electrode CCD, optional EMCCD, optional InGaAs arrays detector (max. 2 detectors).	Open Electrode CCD, optical EMCCD, optical inGaAs arrays detector (max. 3 detectoers).	CCD, IGA and sigle channel