In this work, p-CoO/n-ZnO heterostructures were fabricated on Ni substrate by hydrothermal-decomposition method using cobaltous nitrate hexahydrate (Co(NO)·6HO) and zinc acetate dihydrate (Zn(CHCOO)·2HO) as precursors with zinc acetate concentration varying from 5.0 to 55.0 mM.
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