Decoration of ZnO Nanorods with Coral Reefs like NiO Nanostructures by the Hydrothermal Growth Method and Their Luminescence Study

Materials

Mazhar Ali Abbasi²  Zafar Hussain Ibupoto²  Mushtaque Hussain²  Galia Pozina¹  Jun Lu¹  Lars Hultman¹  Omer Nur² 

[1]Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-58183, Sweden

[2] E-Mails:

[3]Physical Electronics and Nanotechnology Division, Department of Science and Technology (ITN) Campus Norrköping, Linköping University, Norrköping SE-60174, Sweden

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关键词: ZnO nanorods;    NiO nanostructure;    composite nanostructures;    defect states;    cathodoluminescent;   

DOI  :  10.3390/ma7010430

来源: mdpi

【 摘 要 】

Composite nanostructures of coral reefs like p-type NiO/n-type ZnO were synthesized on fluorine-doped tin oxide glass substrates by hydrothermal growth. Structural characterization was performed by field emission scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray diffraction techniques. This investigation shows that the adopted synthesis leads to high crystalline quality nanostructures. The morphological study shows that the coral reefs like nanostructures are densely packed on the ZnO nanorods. Cathodoluminescence (CL) spectra for the synthesized composite nanostructures are dominated mainly by a broad interstitial defect related luminescence centered at ~630 nm. Spatially resolved CL images reveal that the luminescence of the decorated ZnO nanostructures is enhanced by the presence of the NiO.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland