Photoluminescence spectroscopy is a non-contact, nondestructive method of probing the electronic structure of materials. Applications include the compositional analysis of the epitaxial layer of compound semiconductors, defect evaluation of light-emitting materials, evaluation of surfaces, non-destructive evaluation of integrated optical circuits, quantitative analysis of impurities, and evaluation of various Laser Diodes and LEDs ranging from GaN to InP. Horiba Scientifics PL optimised spectrometers permit confocal mapping with sub-micron resolution, with various excitation wavelengths from the UV-NIR.
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