Sir Vladimir, I am trying polarization dependence of a transition metal dichalcogenide, polarization dependence PL shows almost a maximum of 3 nm shift at different angles. I am thinking the possible reasons of shift in PL emission wavelength.
Try to change the orientation of the sample, with a fixed value of the plane of polarization. This will give you food for thought.
If necessary, please do not forget to make notes Recommend about how someone helps you on RG. In addition, please remember my previous answers to your questions that do not have your recommendation.
Then you can get more useful information for you.
Professor Vladimir S. Pavlovich Military Academy of Belarus