Patterned growth of zinc oxide nanorods using poly(vinyl alcohol)-N-methyl-4(4′-formylstyryl)pyridinium methosulfate acetal and zinc acetate mixture as a seed layer

2015 ◽  
Vol 15 (3) ◽  
pp. 356-362 ◽  
Author(s):  
Dooho Choi ◽  
Il Tae Kim ◽  
Jong-Jin Park ◽  
Jaehyun Hur
Keyword(s):  
Zinc Oxide ◽  
Vinyl Alcohol ◽  
Zinc Acetate ◽  
Seed Layer ◽  
Zinc Oxide Nanorods ◽  
Poly Vinyl Alcohol ◽  
Patterned Growth ◽  
Oxide Nanorods ◽  
Acetate Mixture

scholarly journals Active Role of ZnO Nanorods in Thermomechanical and Barrier Performance of Poly(vinyl alcohol-co-ethylene) Formulations for Flexible Packaging

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 922 ◽  
Author(s):  
Francesca Luzi ◽  
Alessandro Di Michele ◽  
Luigi Torre ◽  
Debora Puglia
Keyword(s):  
Zinc Oxide ◽  
Vinyl Alcohol ◽  
Zno Nanorods ◽  
Accelerated Aging ◽  
Active Role ◽  
Zinc Oxide Nanorods ◽  
Poly Vinyl Alcohol ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Oxide Nanorods

Poly(vinyl alcohol-co-ethylene) (EVOH) films containing zinc oxide nanorods (ZnO Nrods) at 0.1, 0.5, and 1 wt%, were realized by solvent casting. The effect of ZnO Nrods content on morphological, thermal, optical, mechanical, and oxygen permeability properties were analyzed. In addition, moisture content and accelerated-aging test studies were performed, with the intention to determine the influence of zinc oxide nanofillers on the functional characteristics of realized packaging systems. Tensile properties showed increased values for strength and deformation-at-break in EVOH-based formulations reinforced with 0.1 and 0.5 wt% of zinc oxide nanorods. Results from the colorimetric and transparency investigations underlined that the presence of ZnO Nrods in EVOH copolymer did not induce evident alterations. In addition, after the accelerated-aging test, the colorimetric test confirmed the possibility for these materials to be used in the packaging sector. This behavior was induced by the presence of zinc oxide nanofillers that act as a UV block that made them useful as an efficient absorber of UV radiation.

scholarly journals Growth of Zinc Oxide Nanorods with the Thickness of Less than or Equal to 1 μm through Zinc Acetate or Zinc Nitrate for Perovskite Solar Cell Applications

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Albertus Bramantyo ◽  
Kenji Murakami ◽  
Masayuki Okuya ◽  
Arief Udhiarto ◽  
Nji Raden Poespawati
Keyword(s):  
Zinc Oxide ◽  
Zinc Acetate ◽  
Seed Layer ◽  
Perovskite Solar Cells ◽  
Zinc Nitrate ◽  
Zinc Oxide Nanorods ◽  
Growth Time ◽  
Nitrate Hexahydrate ◽  
Cbd Method ◽  
Zinc Sources

Arrays of zinc oxide (ZnO) nanorod (NR) were fabricated in a vertical axis direction through the two-step method of seed layer’s deposition and growth of the NR. The seed layer was applied by spin coating with a three-time repetition (n) and rotational speed (v) at 3000 rpm. After the seed layer had grown, ZnO NRs were grown with a growth solution made by combining one zinc source with one hydroxide source. There were two different zinc sources, i.e., zinc acetate dehydrate and zinc nitrate hexahydrate and, for comparison, zinc acetate (ZA) and zinc nitrate (ZN) were each combined with the same hydroxide source, hexamethylenetetramine (HMT). Later, the growth solutions were processed by the chemical bath deposition (CBD) method using a waterbath machine. The CBD method was started at room temperature until it reached the designated temperature at 85°C. At that point, the growth time was calculated from the zero-minute condition. It was found that ZnO NRs had already grown at a thickness of about 100 nm for both ZA and ZN sources. The growth time varied at 15, 60, 90, and 120 minutes after the zero-minute point. By using two separate and independent zinc sources while growing ZnO NRs at various growth periods, several ZnO NRs’ thicknesses were controlled. According to a paper by Lee et al., the lower thickness of ZnO NRs boosted the charge transfer properties of perovskite solar cells (PSCs) because the series resistance between ZnO/perovskite interfaces was lessened. Scanning electron microscopy (SEM) images were observed to analyze the morphological shape of the ZnO NRs. X-ray diffraction (XRD) profiles were characterized to obtain the data for ZnO NR crystallinity. Full width at half maximum (FWHM) analysis was performed at the (002) ZnO peak to calculate the crystal size of the peak. From the results, the smallest crystallite sizes for ZnO NRs grown from ZA and ZN sources were 10.70 nm and 19.29 nm, respectively, which would be the most suitable condition for PSC application.

scholarly journals Morphological and spectroscopic studies on the vertically aligned zinc oxide nanorods grown on low and high temperature deposited seed layer

2017 ◽  
Vol 51 (12) ◽  
pp. 1690
Author(s):  
A. Rayerfrancis ◽  
Bhargav P. Balaji ◽  
N. Ahmed ◽  
C. Balaji
Keyword(s):  
Zinc Oxide ◽  
High Temperature ◽  
Seed Layer ◽  
Spectroscopic Studies ◽  
Zinc Oxide Nanorods ◽  
Ultraviolet Region ◽  
Band Edge Emission ◽  
Electromagnetic Spectrum ◽  
Oxide Nanorods ◽  
Vertically Aligned

Vertically aligned zinc oxide nanorods were grown on low and high temperature deposited aluminium doped zinc oxide seed layer by hydrothermal method and annealed to improve crystallinity. The morphology of the seed layer and the grown nanorods were studied by field emission scanning electron microscopy characterization technique. The properties of the zinc oxide nanorods were analyzed using laser spectroscopic studies. Resonant Raman spectroscopy reveals the unique increase in the A1(LO) mode of vibration with increase in count. The luminescence property of the nanorods was studied with photoluminescence spectrometer. The vertically aligned zinc oxide nanorods show, the very high band edge emission in the ultraviolet region of the electromagnetic spectrum. DOI: 10.21883/FTP.2017.12.45186.8562

scholarly journals Oriented ZnO nanoflowers obtained after calcination of electrospinning poly(vinyl alcohol)/zinc oxide/zinc acetate composite mats

2021 ◽  
Author(s):  
Anchan Khankhean ◽  
Wantana Kuratsameethong ◽  
Somtop Santibenchakul ◽  
Apirat Laobuthee ◽  
Masataka Sugimoto ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Vinyl Alcohol ◽  
Zinc Acetate ◽  
Poly Vinyl Alcohol

Seed-layer-free hydrothermal growth of zinc oxide nanorods on porous silicon

2014 ◽  
Vol 10 (3) ◽  
pp. 565-571 ◽  
Author(s):  
Soaram Kim ◽  
Min Su Kim ◽  
Hyunggil Park ◽  
Giwoong Nam ◽  
Hyunsik Yoon ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Porous Silicon ◽  
Seed Layer ◽  
Hydrothermal Growth ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Seed Layer Free
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