C1s XPS spectrum of the type II sample. The thick curve is the original data. The thin curves are the fitting peaks on 282.8, 284.4, 285.5, and 287.8 eV. The summary fitting curve almost completely matches the experimental curve.
Sopinskyy et al. Nanoscale Research Letters 2014 9:182 doi:10.1186/1556-276X-9-182