Spectra, Heterogeneous Samples and Quantification by XPS in CasaXPS

Large area analysis involves measuring spectra where the composition is expected to be an average over the analysis area, which in the case of heterogeneous samples may include a range of chemically different zones. This video looks at how the composition of a sample may change from one location to another and investigates the influence of instrumental electron optics on data measured from samples with spatially separated chemical zones.