Line Plot from Scientific Research

Left panel: a representative XPS spectrum in the energy range 0-30 eV measured at excitation with light energy of hυ = 200 eV, sample kept at 20 K, showing the main features of GSs, VBs, and semi-core levels. Right panel: schematic diagram of the main contributions from Ti 3d , O 2p , and O 2 s.

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