Physics is the area where spectroscopy is used as no other technique as the main tool for identification, quantification and study. Photoluminescence is of great importance for materials research as the study of localized defects on semiconductors, electronic states, band structure and energy levels. Spectroscopy in physics can be applied in different forms.

It is possible to measure the absolute or relative irradiance of radiant sources such as incandescent lights, gas-discharge lamps or flat panels displays. Among many others applications for fundamental or applied research spectroscopy founds use in the following ones:

- Defects analysis on semiconductors

- Temperature induced phase transition

- Light sources characterization

- Plasma monitoring

- Down and up conversion processes in single crystals

- Thin films deposition

- Organic optoelectronic devices characterization