Research Article

Schottky Junction Methane Sensors Using Electrochemically Grown Nanocrystalline-Nanoporous ZnO Thin Films

Figure 7

FESEM of (a) unmodified and (b) modified ZnO thin films. It is observed that there is little or no difference in the surface morphology after treatment with PdCl2 solution [6].
790476.fig.007a
(a)
790476.fig.007b
(b)