Figure 5
From: Interface treatment using amorphous-carbon and its applications
Comparison of energy states and 10 ppm NO2 gas-sensing performance for a-C, SnO2, SnO2/a-C. (a) Energy relationship between Fermi level, valence band maximum, and work function; (b) response at 30 °C, 100 °C, 200 °C, and 300 °C for SnO2 and SnO2/a-C core-shell structures.
