Figure 4
From: Interface treatment using amorphous-carbon and its applications
UPS results of a-C, SnO2, and SnO2/a-C. (a) UPS of a-C, crystalline SnO2, and SnO2/a-C core-shell; (b) work functions of a-C, SnO2, and SnO2/a-C; (c) valence band maximum of 12.5 eV and (d) energy(cut-off) of 20.8 eV for work function of 0.5 eV in a-C (i.e., 21.2 eV(incident energy) − 0.1 eV(correction value)); (e) valence band maximum of 3.75 eV and (f) energy(cut-off) of 16.9 eV for work function of 4.4 eV in monocrystalline SnO2 (i.e., 21.2 eV(incident energy) − 16.9 eV + 0.1 eV(correction value)).
