Please be specific about what you want to know.

I can give you 3 general informations.

1- Peaks in XRD pattern are a signature of crystalline material.

2- Peaks in your care are very sharp that means your sample is highly crystalline.

3- FWHM (Full Width at Half Maxima ) seems to be small means particle size is large may be in the range of 100s of nm or bigger,

Dear ViJi N,

on which substrate did you deposit the C-dots? If you make an XRD of the substrate alone, you can already substract all peaks that are associated with your substrate. That makes the search much easier.

Best regards,

Hi,

I have used the glass material to deposit the C-dots. I referred literature about C-dots are usually amorphous. But why I am getting crystalline features in my XRD?

Is this possible that, graphene quantum dots formed instead of C-dots after carbonization of source materials.

Graphene QDs are highly crystalline and higher size. Is there way to differentiate carbon dots and graphene quantum dots?

As from the information you have given, graphene can be formed. But the graphene gives XRD peaks at about 9° and 18°. If the graphene oxide was formed more peaks may occur.

Dear Viji,

if you used glass as substrate, depening on the kind it can show a multitude of crystalline peaks. My suggestion is to check for SiO2 etc as typical source of crystalline peaks in glass. Again, do a reference XRD of your glass plate without deposits on it to rule out peaks related to your substrate.

Best regards,

Please read a basic book on XRD. If you understand the basic XRD you may not ask this type of question. Best wishes.