Adventitious carbon contamination is commonly used as a charge reference for XPS spectra. C1s spectrum for contamination typically has C-C, C-O-C, and O-C=O components. The C-C component may be set to a binding energy of 284.8eV, by default.

Jun 4, 2016 · In this work, we investigated the effect of charging of diamond on highly oriented pyrolytic graphite (HOPG) as well as adapalene (Figure S7a), which includes sp 3 C (adamantane) bonded with sp 2 C (benzene and naphthalene), using mainly actual XPS analyses and calculated XPS spectra.

Jul 21, 2020 · The carbon species and banding energies for several typical kinds of carbon materials (graphite, carbon black, graphene, carbon nanotubes, carbides, and polymers) were summarized with typical XPS spectra.

Materials of a graphitic nature (e.g., graphite, graphene, carbon nanotubes etc.) will have a C 1s main peak, attributed to C=C, which can be used as a charge reference set to 284.5 eV. An average of values for graphite from 21 references from the NIST database [1] is 284.46 eV with a standard deviation of 0.14 eV.

Common carbon, C (1s) reference energies: Adventitious Carbon: 284.8 eV (C-C and C-H bonds).

Jan 6, 2021 · In this guide, we describe and explain the most common problems associated with C 1s narrow scan analysis in the XPS literature. We then provide an overview of rules, principles, and considerations that, taken together, should guide the approach to …

The XPS C1s peaks at 284.0 eV, 286.1 eV and 295.5 eV are associated with sp 2 and sp 3 -hybridized carbon (C C and C C), hydroxyl/phenols (C OH) and carboxyl (O C O) groups, respectively.