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投的Vacuum期刊，遇到了关于XPS提问的问题，想请专业人士如何回答？ 已有1人参与
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| 问题如下：1. "The diameter of focus spot was 200 μm, the power was 50 W, and the calibration binding energy of C was 284.8 eV." Note that aligning the spectra to the C 1s peak of adventitious carbon is not reliable as it may lead to unphysical results (ChemPhysChem 18 (2017) 1507, Sci. Rep. 11 (2021) 11195, and Angewandte Chemie Int. Ed. 59 (2020) 5002). Adventitious carbon is in general an unknown compound, not an inherent part of the sample, does not make proper electrical contact to the analyzed sample, BE of the C 1s peak varies in a wide range. You could use the C-C signal from polyamide but you need to verify that the contribution of adventitious carbon to the C 1s spectra is small. If that is not the case the second option is to use the method based on the sample work function (see: Appl. Surf. Sci. 451 (2018) 99)@Monash2011 |
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