Figure 5
From: Enhanced Field Emission from Argon Plasma-Treated Ultra-sharp α-Fe2O3Nanoflakes
a Typical field-emission current density–applied field (J–E) curves of the α-Fe2O3nanoflakes films before and after 100 W Ar plasma treatment.Inset shows theF–N plots (ln(J/E2) vs. 1/E) accordingly, which exhibits a good linear dependence (solid line is the fitting result).b Long-term stability measurement of field-emission property of nanoflake films after Ar plasma treatment