Growth and Characterization of [001] ZnO Nanorod Array on ITO Substrate with Electric Field Assisted Nucleation

2005 ◽  
Vol 879 ◽  
Author(s):  
Young Jung Kim ◽  
Huamei Shang ◽  
Guozhong Cao
Keyword(s):  
Electric Field ◽  
Zno Nanorods ◽  
Nanorod Array ◽  
Broad Emission Band ◽  
Zno Nanorod ◽  
Wurtzite Crystal Structure ◽  
Direct Growth ◽  
Zno Nanorod Array ◽  
Band Spreading

AbstractThis paper reports direct growth of [001] ZnO nanorod arrays on ITO substrate from aqueous solution with electric field assisted nucleation, followed with thermal annealing. Xray diffraction analyses revealed that nanorods have wurtzite crystal structure. The diameter of ZnO nanorods was 60 ∼ 300 nm and the length was up to 2.5 μm depending on the growth condition. Photoluminescence spectra showed a broad emission band spreading from 500 to 870 nm, which suggests that ZnO nanorods have a high density of oxygen interstitials. Low and nonlinear electrical conductivity of ZnO nanorod array was observed, which was ascribed to non-ohmic contact between top electrode and ZnO nanorods and the low concentration of oxygen vacancies.

scholarly journals Preparation and Characterization of ZnO/TiO2 Nanocomposite by Anodization and Hydrothermal Synthesis

2015 ◽  
Vol 55 ◽  
pp. 27-33
Author(s):  
Salima Benkara ◽  
Houda Ghamri
Keyword(s):  
Zno Nanorods ◽  
Hydrothermal Process ◽  
Zinc Nitrate ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Wurtzite Crystal Structure ◽  
Inorganic Precursors ◽  
Anodization Method

ZnO nanorod arrays were deposited by hydrothermal process via an aqueous solution with ammonia and Zinc nitrate as inorganic precursors, using TiO2 nanotube templates formed in HF solution by anodization method. The effect of NH3.H2O and ZnNO3 concentration on ZnO nanorods morphology and crystallinity were investigated. XRD demonstrates that ZnO nanorods are wurtzite crystal structure preferentially oriented in c-axis direction. The length and the diameter of the ZnO nanorod range from 1,1 mm to 3,4 mm and from 250 to 500 nm respectively.

Fabrication, Characteristics and Application in Dye-Sensitized Solar Cell of Vertically Alligned ZnO Nanorod Arrays Guided with Polyethyleneimine via Hydrothermal Method

2013 ◽  
Vol 705 ◽  
pp. 120-125
Author(s):  
Muhammad Saleem ◽  
Liang Fang ◽  
Fang Wu ◽  
L.W. Jun ◽  
C.L. Xu ◽  
...  
Keyword(s):  
Photovoltaic Performance ◽  
Zno Nanorods ◽  
Dye Adsorption ◽  
Hexagonal Wurtzite Structure ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Photovoltaic Properties ◽  
Growth Solution ◽  
Glass Substrates ◽  
Zno Nanorod Array

.A series of vertically aligned ZnO nanorod-array films are grown on fluorine-doped tin oxide (F: SnO2, FTO) coated glass substrates by the solution-based chemical process. The effect of polyethyleneimine (PEI) adding in seed and growth solution on the structure, morphology, UV-Vis absorption spectra and photovoltaic properties of ZnO nanorod array films, has been analyzed. The XRD and SEM results showed that the ZnO nanorod have the hexagonal wurtzite structure with the (002) direction normal to the substrate. It was observed that with the addition of PEI in growth solution, the ZnO nanorods become smaller in diameter and longer in length i.e. greatly enhance their surface area, leading to improve dye adsorption and photovoltaic performance of DSSCs. The efficiency of ZnO nanorod-based DSSC with PEI in growth solution was on average 1.18 % for film A4, which is 84 % higher than for ZnO nanorod-based DSSC without PEI in growth solution.

Enhanced immunofluorescence detection of a protein marker using a PAA modified ZnO nanorod array-based microfluidic device

Nanoscale ◽  
2018 ◽  
Vol 10 (37) ◽  
pp. 17663-17670 ◽  
Author(s):  
Zhihua Wu ◽  
De Zhao ◽  
Chengyi Hou ◽  
Lei Liu ◽  
Jianhua Chen ◽  
...  
Keyword(s):  
Microfluidic Device ◽  
Zno Nanorods ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Biomarker Detection ◽  
Protein Marker ◽  
Zno Nanorod Array

ZnO nanorods were obtained through a controllable microfluidic reaction in capillaries and used for biomarker detection after PAA modification.

scholarly journals Effects of GaxZn1−xO nanorods on the photoelectric properties of n-ZnO nanorods/p-GaN heterojunction light-emitting diodes

RSC Advances ◽  
2017 ◽  
Vol 7 (78) ◽  
pp. 49613-49617 ◽  
Author(s):  
Rui Li ◽  
Chunyan Yu ◽  
Hailiang Dong ◽  
Wei Jia ◽  
Tianbao Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Light Emitting Diodes ◽  
Zno Nanorods ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Light Emitting ◽  
Photoelectric Properties ◽  
Doped Zno ◽  
Zno Nanorod Array

A Ga-doped ZnO nanorod array has been synthesized on a p-GaN/Al2O3 substrate by a hydrothermal method at low temperature.

Comparison of ZnO nanorod array coatings on wood and their UV prevention effects obtained by microwave-assisted hydrothermal and conventional hydrothermal synthesis

Holzforschung ◽  
2015 ◽  
Vol 69 (8) ◽  
pp. 1009-1014 ◽  
Author(s):  
Yanchun Fu ◽  
Wansi Fu ◽  
Yongzhuang Liu ◽  
Guozheng Zhang ◽  
Yixing Liu ◽  
...  
Keyword(s):  
Zno Nanorods ◽  
Nanorod Array ◽  
Zno Nanorod ◽  
Size Distributions ◽  
Sem Images ◽  
Orientation Degree ◽  
Microwave Assisted ◽  
Zno Nanorod Array ◽  
Aligned Array ◽  
Wood Surfaces

AbstractZnO nanorod array coatings were successfully synthesized on wood surfaces using a conventional hydrothermal (CHT) and a microwave-assisted hydrothermal (MWHT) method. The reaction time of the MWHT method at high temperature was only 1/12th that of the CHT method. The MWHT-ZnO nanorods exhibited better crystallinity than those produced by the CHT method. The ZnO nanorod had a wurtzite crystal structure oriented along thec-axis. The MWHT nanorods with their higher (002)/(101) ratio were more conducive and improved the orientation degree of the ZnO nanorods. Field emission scanning electron microscopy (FE-SEM) images showed that the MWHT-ZnO nanorods had smaller diameters and narrower size distributions than those produced by the CHT method. However, both methods formed well-aligned array coatings that covered the wood surfaces, and the two coatings had similar UV protecting effects and inhibited discoloration.

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