Point and shoot with micro-PL
Klar photoluminescence microscopes (micro-PL) provide spectroscopy and spatial resolution.
Just point the laser spot at the region of interest and take a spectrum of the emitted light.
PL spectra from the Klar micro-PL and a standard (non-microscope) fluorescence spectrometer. The main peak is band-edge luminescence and the sideband at 900 nm is emission from a defect level. Sample provided by Mike Scarpulla (University of Utah) and Chris Ferekides (University of South Florida).