In the test results of Raman spectroscopy, there are often many broad peaks that contain a lot of information. How can I correctly separate those peaks?
I would suggest to carry out low temperature Raman up to liquid nitrogen temperature. Some of the peaks which are difficult to resolve at ambient can be well resolved at low temperature. Also, weather it is a single peak or more than one peak can be found by fitting with suitable line shape functions (mostly Lorentzian). If you are unable to fit with single peak, then try with multiple peak fitting. Peak broadening may arise due to various reasons such as amorphization, defects, coupling electron with phonons (peak assymmetry) etc.
@ Sorb Yesudhas Thanks for your suggestion, I mainly want to study the solution behavior, the low temperature as liquid nitrogen temperature may not work well. As for multiple peak fitting, my current method is to adjust the position of each peak by myself, so that the fitted curve approximates my test results, however there are so many subjective factors and multiple fitting results. How to achieve automatic fitting?