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Ordered nickel oxide nanowire arrays and their optical absorption properties
Authors:Yu Lin   Ting Xie   Baochang Cheng   Baoyou Geng  Lide Zhang
Affiliation:

a Institute of Solid State Physics, Chinese Academy of Science, Hefei 230031, PR China

b College of Material Science and Engineering, Huaqiao University, Quanzhou 362011, PR China

Abstract:Ordered NiO nanowire arrays embedded in anodic alumina membranes have been prepared by using an electrochemical deposition method. After annealing at 300 °C, the NiO nanowire arrays were characterized using SEM, TEM, SAED, and XRD. SEM and TEM observations reveal that these nanowires are dense, continuous and arranged roughly parallel to one another. XRD and SAED analysis together indicate that these NiO nanowires crystallize with a polycrystalline structure. The optical absorption band gap of NiO nanowire arrays is 3.74 eV, and no obvious blue shift or red shift with respect of that of the bulk NiO can be observed.
Keywords:
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