Effect of Precursor Concentration on Structural Optical and Electrical Properties of NiO Thin Films Prepared by Spray Pyrolysis

Figure 3

SEM Images of NiO thin films prepared at 500°C with different precursor concentration, (a) samples prepared with 0.015, (b) with 0.03, and (c) with 0.04 M, (d) with 0.1 M.

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(b)

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(d)