Properties of ZnO:Al, ZnO:Al–SiO<sub>2</sub> Films Obtained in Sol Gel Process from Coating Solutions

Abstract

The paper deals with ZnO, ZnO:Al 5 wt.% and ZnO:Al 5 wt.% – SiO₂ 5 wt.% thin films obtained on glass substrates by the sol gel process from film-forming solutions Zn[C₆H₄OHCOO]NO₃, Al(NO₃)₃·9H₂O and Si(OC₂H₅)₄. The film properties such as transmission in the visible region, surface resistance and photocatalysis are investigated. It is shown that the aluminum addition has no effect on the ZnO film transmission in the visible region, but improves the film conductivity through the decrease in the surface resistance down to 10⁷ Ohm. The ZnO:Al – SiO₂ film has the highest transmission of 95%. The addition of SiO₂ has no effect on the ZnO:Al film transmission. The maximum photocatalytic activity is observed in the ZnO:Al film. The photodecomposition velocity of methyl orange is 1.47 ∙10^–2 min^–1, that is by one order higher as compared to that in the presence of Degussa P25 adsorptive photocatalyst. The SiO₂ addition lowers the degree of crystallinity of the ZnO:Al film and its photocatalytic activity.

Original language	English
Pages (from-to)	591-598
Number of pages	8
Journal	Russian Physics Journal
Volume	63
Issue number	4
DOIs	https://doi.org/10.1007/s11182-020-02072-w
Publication status	Published - 1 Aug 2020

Keywords

photocatalysis of organic dyes
surface morphology
surface resistance
transparent film
ZnO:Al
ZnO:Al–SiO films

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1007/s11182-020-02072-w

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@article{8110c62c3b4647a5a42e925ca537d9ce,

title = "Properties of ZnO:Al, ZnO:Al–SiO2 Films Obtained in Sol Gel Process from Coating Solutions",

abstract = "The paper deals with ZnO, ZnO:Al 5 wt.% and ZnO:Al 5 wt.% – SiO2 5 wt.% thin films obtained on glass substrates by the sol gel process from film-forming solutions Zn[C6H4OHCOO]NO3, Al(NO3)3·9H2O and Si(OC2H5)4. The film properties such as transmission in the visible region, surface resistance and photocatalysis are investigated. It is shown that the aluminum addition has no effect on the ZnO film transmission in the visible region, but improves the film conductivity through the decrease in the surface resistance down to 107 Ohm. The ZnO:Al – SiO2 film has the highest transmission of 95%. The addition of SiO2 has no effect on the ZnO:Al film transmission. The maximum photocatalytic activity is observed in the ZnO:Al film. The photodecomposition velocity of methyl orange is 1.47 ∙10–2 min–1, that is by one order higher as compared to that in the presence of Degussa P25 adsorptive photocatalyst. The SiO2 addition lowers the degree of crystallinity of the ZnO:Al film and its photocatalytic activity.",

keywords = "photocatalysis of organic dyes, surface morphology, surface resistance, transparent film, ZnO:Al, ZnO:Al–SiO films",

author = "Kuznetsova, {S. A.} and Mal{\textquoteright}chik, {A. G.} and Kozik, {V. V.}",

year = "2020",

month = aug,

day = "1",

doi = "10.1007/s11182-020-02072-w",

language = "English",

volume = "63",

pages = "591--598",

journal = "Russian Physics Journal",

issn = "1064-8887",

publisher = "Consultants Bureau",

number = "4",

}

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T1 - Properties of ZnO:Al, ZnO:Al–SiO2 Films Obtained in Sol Gel Process from Coating Solutions

AU - Kuznetsova, S. A.

AU - Mal’chik, A. G.

AU - Kozik, V. V.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - The paper deals with ZnO, ZnO:Al 5 wt.% and ZnO:Al 5 wt.% – SiO2 5 wt.% thin films obtained on glass substrates by the sol gel process from film-forming solutions Zn[C6H4OHCOO]NO3, Al(NO3)3·9H2O and Si(OC2H5)4. The film properties such as transmission in the visible region, surface resistance and photocatalysis are investigated. It is shown that the aluminum addition has no effect on the ZnO film transmission in the visible region, but improves the film conductivity through the decrease in the surface resistance down to 107 Ohm. The ZnO:Al – SiO2 film has the highest transmission of 95%. The addition of SiO2 has no effect on the ZnO:Al film transmission. The maximum photocatalytic activity is observed in the ZnO:Al film. The photodecomposition velocity of methyl orange is 1.47 ∙10–2 min–1, that is by one order higher as compared to that in the presence of Degussa P25 adsorptive photocatalyst. The SiO2 addition lowers the degree of crystallinity of the ZnO:Al film and its photocatalytic activity.

AB - The paper deals with ZnO, ZnO:Al 5 wt.% and ZnO:Al 5 wt.% – SiO2 5 wt.% thin films obtained on glass substrates by the sol gel process from film-forming solutions Zn[C6H4OHCOO]NO3, Al(NO3)3·9H2O and Si(OC2H5)4. The film properties such as transmission in the visible region, surface resistance and photocatalysis are investigated. It is shown that the aluminum addition has no effect on the ZnO film transmission in the visible region, but improves the film conductivity through the decrease in the surface resistance down to 107 Ohm. The ZnO:Al – SiO2 film has the highest transmission of 95%. The addition of SiO2 has no effect on the ZnO:Al film transmission. The maximum photocatalytic activity is observed in the ZnO:Al film. The photodecomposition velocity of methyl orange is 1.47 ∙10–2 min–1, that is by one order higher as compared to that in the presence of Degussa P25 adsorptive photocatalyst. The SiO2 addition lowers the degree of crystallinity of the ZnO:Al film and its photocatalytic activity.

KW - photocatalysis of organic dyes

KW - surface morphology

KW - surface resistance

KW - transparent film

KW - ZnO:Al

KW - ZnO:Al–SiO films

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