Electrical investigation and ultraviolet detection of ZnO nanorods encapsulated with ZnO and Fe-doped ZnO layer

Encapsulated ZnO nanorod arrays were fabricated using a two-step method; hydrothermal followed by dip-coating. Intensity of X-ray diffraction peaks of ZnO nanorod films increased by encapsulation with ZnO and Fe doped ZnO layer. Encapsulation process increased diameter of the rods in a range of 20–4...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2014-09, Vol.71 (3), p.540-548
Main Authors: Azimirad, R., Khayatian, A., Almasi Kashi, M., Safa, S.
Format: Article
Language:English
Subjects:
Ceramics
Chemistry
Chemistry and Materials Science
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Composites
Dip coatings
Encapsulation
Exact sciences and technology
General and physical chemistry
Glass
Immersion coating
Inorganic Chemistry
Materials Science
Nanorods
Nanotechnology
Natural Materials
Optical and Electronic Materials
Original Paper
X-ray diffraction
Zinc oxide
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Summary:Encapsulated ZnO nanorod arrays were fabricated using a two-step method; hydrothermal followed by dip-coating. Intensity of X-ray diffraction peaks of ZnO nanorod films increased by encapsulation with ZnO and Fe doped ZnO layer. Encapsulation process increased diameter of the rods in a range of 20–40 nm. The optical studies indicated that the band-gap decreased with increment of the nanorod diameter, and increased with Fe doping in the ZnO layer. The electrical resistance of the samples demonstrated a remarkable reduction due to encapsulation, especially in the sample encapsulated with Fe doped-ZnO layer. The photoresponse behavior of ZnO nanorod films was investigated under different powers of ultraviolet illumination. The photoresponsivity was improved for encapsulated nanorods as compared to bare nanorods.
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-014-3406-5