Control of crystal growth of ZnO nanowhiskers in aqueous solution and synthesis of transparent nanoarrays

Xiulan Hu; Yoshitake Masuda; Tatsuki Ohji; Kazumi Kato

doi:10.2497/jjspm.54.834

Control of crystal growth of ZnO nanowhiskers in aqueous solution and synthesis of transparent nanoarrays

Xiulan Hu, Yoshitake Masuda, Tatsuki Ohji, Kazumi Kato

National Institute of Advanced Industrial Science and Technology

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Transparent and porous ZnO nanowhisker arrays were prepared in 0.025 M zinc nitrate-hexamethylenetetramine aqueous solutions with the addition of polyethylenimine (PEI) at a low temperature. The effect of free zinc ion concentration was controlled by changing the immersing temperatures at which the pre-treated FTO substrates were got into the mixing solution such as 25 °C, 75 °C and 85 °C. The free Zn ion concentration is a main factor for control of the transmittance. It was found that high Zn ion concentrations resulted in relative thick white and low transparent ZnO film, while the low concentrations gave high transparenency in the nanoarray. A transmittance of about 85% for porous ZnO films with thickness of 800 nm in the visible range was achieved.

Original language	English
Pages (from-to)	834-838
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	54
Issue number	12
DOIs	https://doi.org/10.2497/jjspm.54.834
State	Published - Dec 2007
Externally published	Yes

Keywords

Aqueous solution
Concentration
Immersing temperature
Transmittance
ZnO nanowhisker arrays

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10.2497/jjspm.54.834

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abstract = "Transparent and porous ZnO nanowhisker arrays were prepared in 0.025 M zinc nitrate-hexamethylenetetramine aqueous solutions with the addition of polyethylenimine (PEI) at a low temperature. The effect of free zinc ion concentration was controlled by changing the immersing temperatures at which the pre-treated FTO substrates were got into the mixing solution such as 25 °C, 75 °C and 85 °C. The free Zn ion concentration is a main factor for control of the transmittance. It was found that high Zn ion concentrations resulted in relative thick white and low transparent ZnO film, while the low concentrations gave high transparenency in the nanoarray. A transmittance of about 85% for porous ZnO films with thickness of 800 nm in the visible range was achieved.",

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AU - Hu, Xiulan

AU - Masuda, Yoshitake

AU - Ohji, Tatsuki

AU - Kato, Kazumi

PY - 2007/12

Y1 - 2007/12

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AB - Transparent and porous ZnO nanowhisker arrays were prepared in 0.025 M zinc nitrate-hexamethylenetetramine aqueous solutions with the addition of polyethylenimine (PEI) at a low temperature. The effect of free zinc ion concentration was controlled by changing the immersing temperatures at which the pre-treated FTO substrates were got into the mixing solution such as 25 °C, 75 °C and 85 °C. The free Zn ion concentration is a main factor for control of the transmittance. It was found that high Zn ion concentrations resulted in relative thick white and low transparent ZnO film, while the low concentrations gave high transparenency in the nanoarray. A transmittance of about 85% for porous ZnO films with thickness of 800 nm in the visible range was achieved.

KW - Aqueous solution

KW - Concentration

KW - Immersing temperature

KW - Transmittance

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Control of crystal growth of ZnO nanowhiskers in aqueous solution and synthesis of transparent nanoarrays

Abstract

Keywords

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