typically, energy band diagrams need valance band (VB) and conduction band (CB). Eg has been calculated with the help of UV derived tauc plot. My question is how I do calculate VB using XPS data. As per my knowledge, VB is the direct value of binding energy. Please suggest.
Dear Shatrudhan, this topic has been discussed several times in Researchgate and different experts have answered this question from their own point of view. Below you may find the links to these questions and a few research papers concerning the band gap determination by XPS and UPS. Hope you find them useful.
https://www.researchgate.net/post/How_to_calculate_band_gap_of_organic_material_from_XPS_spectra_of_respective_material
https://www.researchgate.net/post/Can-XPS-determine-Fermi-Energy-of-different-phases-present-in-the-sample
https://www.researchgate.net/post/How_can_I_determine_the_HOMO_and_LUMO_positions_from_XPS_data_for_Au_nanoclusters
https://pubs.acs.org/doi/abs/10.1021/jp982834y
https://www.sciencedirect.com/science/article/abs/pii/S0375960115011172
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