I have been reading a paper where PL spectroscopy is applied to a sample containing both solid and liquid states (resulting from a precipitate). They then proceed to characterize this slurry via PL spectroscopy.
https://pubs.acs.org/doi/abs/10.1021/acsenergylett.0c01749
In the contact of UV-Vis spectroscopy, such an approach would not work due to the scattering of light. However, can you obtain a meaningful measurement by exciting the solid part of the slurry, and monitoring the photoilumenence over time? Would light scattering be an issue similar to that in UV-vis?