Gold alloying of ZnO crystals during their growth via the vapor-liquid-solid mechanism doping ZnO crystals with gold during their growth by the vapor-liquid-crystal method

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Resumo

Arrays of ZnO microcrystals were grown on a silicon substrate (111) by applying the vapor deposition method with the vapor-liquid-crystal mechanism, where the liquid phase was gold. Differences in the obtained crystals at growth times of 5, 10, and 15 minutes are described. The lattice parameters of the microcrystals were calculated as the growth time increased: a = 3.316, c = 5.281; a = 3.291, c = 5.270; a = 3.286, c = 5.258 Å. The change in Au content in the microcrystals as they grew was determined, from 0.520 at. % at the substrate to 0.035 at. % on the crystal surfaces after 15 minutes of growth. Maps of the atomic element distribution are presented, and an the differences in lattice parameters of the obtained crystals compared to standard values are explained.

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Sobre autores

P. Podkur

Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”

Email: volch2862@gmail.com
Rússia, Moscow

I. Volchkov

Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”

Autor responsável pela correspondência
Email: volch2862@gmail.com
Rússia, Moscow

L. Zadorozhnaya

Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”

Email: volch2862@gmail.com
Rússia, Moscow

V. Kanevskii

Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”

Email: volch2862@gmail.com
Rússia, Moscow

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2. Fig. 1. SEM images of ZnO:Au microcrystals and the distribution map of elements (Zn, Au, O) at growth time of 5 (a), 10 (b), 15 min (c). The insets show SEM images of cross sections of the samples

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3. Fig. 2. X-ray diffractograms of ZnO:Au microcrystals

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4. Fig. 3. X-ray diffractograms of ZnO:Au microcrystals in the angle range 2 = 30.5-34.5

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5. Fig. 4. Change of gold content in ZnO microcrystals as their size increases

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