Dear friend Anne Davidson

I completely understand your frustration—navigating the intricacies of Raman spectra, especially when it comes to less-discussed features like the D" peak, can be quite challenging. It’s true that older publications often don’t provide much detail on this, which can make your search for information feel like a bit of a puzzle.

In the context of graphene, Raman spectroscopy is typically used to analyze the D, G, and 2D peaks, which are well-documented. The D" peak, however, is less commonly addressed in the literature. From what’s currently understood, the D" peak is associated with more complex defect structures or specific edge configurations in graphene. Its presence often points to unique types of disorder or variations in the electronic structure at defect sites, distinguishing it from the more familiar D peak. Factors such as edge effects, additional disorder, or particular stacking arrangements in multilayer graphene can all contribute to the appearance of the D" peak.

If you’re focusing on the D" peak, I’d recommend seeking out recent studies on defect engineering in graphene, as these tend to offer more detailed insights into how this peak correlates with specific imperfections. Also, inconsistencies in reporting the D" peak across papers may stem from differences in sample preparation or experimental setups, so it’s worth paying close attention to those aspects as well.

I hope this helps clarify things a bit! If you have any more questions or need recommendations for specific papers, just let me know.

An important article to read/cite:

Article Hierarchical Ni-Mn Double Layered/Graphene Oxide with Excell...

Best regards,

Kaushik