Surfactant-Assisted Route to Synthesize Well-Aligned ZnO Nanorod Arrays on Sol−Gel-Derived ZnO Thin Films

Well-aligned ZnO nanorod arrays on Chaleted Sol-Gel-Derived ZnO thin films was achieved at a temperature of 90°C by a surfactant-assisted soft chemical approach. The nanorod arrays were characterized by XRD, SEM, XPS, and UV-Vis absorbance spectra. The ZnO nanorod arrays are wurtzite crystal stuctures preferentially orienting in the direction of the c-axis and ZnO nanorods are grown verticallyon the substrate. The XPS analysis shows the Zn:O ratio of ZnO nanorod arrays near is 1:1. The UV-Vis absorbance spectra indicate that ZnO nanorod arrays have absorption of visible-light as well as ultraviolet-light. Therefore, the ZnO nanorods may be good candidates for visible-light photocatalysis materials from the viewpoint of practical applications.

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Photovoltaic Properties of Dye-Sensitized Solar Cells Using Novel Aligned ZnO Nanorod Arrays on Sn-Doped ZnO Seeded Catalyst with Different Aspect Ratio

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1109.281 ◽

2015 ◽

Vol 1109 ◽

pp. 281-285

Author(s):

I. Saurdi ◽

Mohamad Hafiz Mamat ◽

A.K. Shafura ◽

M.F. Malik ◽

A. Ishak ◽

...

Keyword(s):

Thin Films ◽

Sol Gel ◽

Dye Sensitized Solar Cells ◽

Zno Thin Films ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Photovoltaic Properties ◽

Dye Sensitized ◽

Doped Zno

The Sn-doped ZnO thin films were deposited on glass and ITO by sol gel Spin Coating technique. The Structural and electrical properties of Sn-doped ZnO thin films were studied and discussed. The Sn-doped ZnO thin film particle sizes were decreased whenever the doping concentration increased. Besides that, the resistivity 7.7 x 102 Ω.cm was obtained at 2 at.% Sn-doped thin films and aligned ZnO nanorod arrays with large surface area were grown on 2 at.% Sn-doped ZnO film. Therefore, dye sensitized solar cell at 2.0 at.% Sn-doped ZnO thin films with aligned ZnO Nanorod arrays have improved in the photocurrent density and conversion efficiency.

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Preparation of Aligned ZnO Nanorod Arrays on Sn-Doped ZnO Thin Films by Sonicated Sol-Gel Immersion Fabricated for Dye-Sensitized Solar Cell

Advances in Materials Science and Engineering ◽

10.1155/2014/636725 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

I. Saurdi ◽

M. H. Mamat ◽

M. F. Malek ◽

M. Rusop

Keyword(s):

Thin Film ◽

Thin Films ◽

Sol Gel ◽

Visible Region ◽

Zno Thin Films ◽

Zno Nanorod ◽

Zno Thin Film ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Doped Zno

Aligned ZnO Nanorod arrays are deposited on the Sn-doped ZnO thin film via sonicated sol-gel immersion method. The structural, optical, and electrical properties of the Sn-doped ZnO thin films were investigated. Results show that the Sn-doped ZnO thin films with small grain size (~20 nm), high average transmittance (96%) in visible region, and good resistivity7.7 × 102 Ω·cm are obtained for 2 at.% Sn doping concentration. The aligned ZnO nanorod arrays with large surface area were also obtained for 2 at.% Sn-doped ZnO thin film. They were grown on sol-gel derived Sn-doped ZnO thin film, which acts as a seed layer, via sonicated sol-gel immersion method. The grown aligned ZnO nanorod arrays show high transmittance at visible region. The fabricated dye-sensitised solar cell based on the 2.0 at.% Sn-doped ZnO thin film with aligned ZnO nanorod arrays exhibits improved current density, open-circuit voltage, fill factor, and conversion efficiency compared with the undoped ZnO and 1 at.% Sn-doped ZnO thin films.

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Effect of Lithium-Doped on the Crystal Structure and Morphology of ZnO Nanorod Arrays

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.602-604.235 ◽

2012 ◽

Vol 602-604 ◽

pp. 235-238

Author(s):

Yang Lin Liu ◽

Xue Chen Duan ◽

Shu Yun Liu ◽

Yan Yan Liu

Keyword(s):

Crystal Structure ◽

Thin Films ◽

Sol Gel ◽

Processing Parameters ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Glass Substrates ◽

Structure And Morphology ◽

Nano Structures

Lithium-doped zinc oxide(ZLO) thin films were deposited on glass substrates by sol-gel method.And then by controlling processing parameters such as the amount of doped lithium and stability, etc,Well-aligned ZLO nanorod arrays were successfully grown on substrates by hydrothermal method, where the substrates were spin-coated with seed layer.The experiments show the 5% Li-doped and diameter of about 50nm of ZLO thin films nanorod arrays has the best performance photoluminescence and surfactants can promote the growth of ZLO rod-like nano-structures and contribute to the formation of ZLO nanorod arrays with highly oriented.

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