In XPS analysis, carbon correction is often performed by normalizing the spectra to the C1s peak at 284.6 eV. You can find more details @ 10.1021/acsanm.3c05202
Sunil Barma thank you for the suggestion. I want to ask you one more question what should I do for O1s spectra? Are there O1 spectra that also need corrections?
1) A spectrum gets corrected exactly once, you don't shift every peak individually.
2) Before you shift around stuff, please check whether you need correction at all - a well-conducting sample should give a signal that can be used as it is. The C1s correction is more of a last resort method, if possible, other methods should be preferred. Since it is quite controversial in the community, here are four references that should cover the range of valid points quite well:
Article X-ray photoelectron spectroscopy: Towards reliable binding e...
Article Undressing the myth of apparent constant binding energy of t...
Article Accessing the Robustness of Adventitious Carbon for Charge R...
Article A unified secondary electron cut-off presentation and common...