PDF
1.06
MB
![Photoluminescence of Semiconductors thumbnail](http://static.horiba.com/fileadmin/Horiba/_processed_/6/3/csm_Photoluminescence_of_Semiconductors_f2769c3bf0.png)
Photoluminescence of Semiconductors
Characterization of structure, composition, and impurities
Photoluminescence spectroscopy (PL) is a powerful optical method used for characterizing materials. PL can be used to find impurities and defects in silicon and group III-V element semiconductors, and to determine semiconductor band-gaps. A material absorbs light, creating an electron-hole pair; 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.
Dual Mode Analog/Photon Counting PMT
Short Focal Length Triple Grating Imaging Spectrographs
Do you have any questions or requests? Use this form to contact our specialists.