i have analyzed samples using XRD, i got peaks with a slight peak shift for pure and doped material. no any addition peak was found. just XRD is enough to confirm the doping?
Dear Shreya, record XPS and UV-DRS spectra also. From the UV DRS spectra you can calculate band gap. Doping of W and Sb should decrease the band gap as compared to bare.
All the best.
Shreya Modi
There will be shifting of XRD peaks during doping. The main reason in your case is the increase/decrease in the lattice parameters that is reflected by the shift of diffraction peaks. This effect is mainly due to the difference in ionic radii between the main element and the dopant ion. Therefore, XRD data can support the signature of doped element.
Additionally, you need to perform XPS to confirm the doping. You can also perform EDX with elemental mapping measurement to get the idea about your sample.
You can also perform Photoluminescence (PL) measurement, as PL is a very good technique to detect the various defect levels generated during doping in ZnO nanoparticles.
Best Regards,
Dipayan
XRD suggests the substitutional doping of W/Sb. The peak shift suggests change in lattice parameters and other structural properties according to atomic radii of the dopant. You can go for EDAX/EDX for chemical confirmation. If there is doping or not?
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