Structure, electrical properties and luminescence of ZnO nanocrystals deposited in SiO 2 /Si track templates


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Authors

  • А Даулетбекова
  • А Акылбекова
  • Ш Гиниятова
  • З Баймуханов
  • Л Власукова
  • А Акилбеков
  • А Усеинов
  • А Козловский
  • Ж Карипбаев

DOI:

https://doi.org/10.32523/2616-6836-2019-128-3-57-66

Abstract

ZnO nanoclusters obtained by electrochemical deposition (ECD) of zinc in track template a-SiO 2 /Si-n have been studied. The structure SiO 2 /Si was irradiated on a DC-60 cyclotron with Xe 200 MeV ions (Ф = 108 ions / cm2 ),
followed by chemical etching in an aqueous solution of hydrofluoric acid (HF). Electrochemical deposition (ECD) Zn in track template was performed in a potentiostatic mode. The surface of the samples after deposition was examined using a JSM 7500F scanning electron microscope. X-ray diffraction analysis (XRD) was performed using a D8 ADVANCE ECO X-ray diffractometer. According to X-ray diffraction data, zinc electroplating in a-SiO 2 / Si-n track templating led to the formation of ZnO nanocrystals with a zinc blende crystal structure (ZB). The current-voltage characteristics and photoluminescence of SiO 2 /Si samples with ZnO ZB nanocrystals were studied. The structures of the photoluminescence spectra for ZnO ZB and ZnO WS (crystal structure - wurtzite) are the same, but the ratio of the intensities of the luminescence bands is different. A
comparison of the band intensities showed that oxygen vacancies are the dominant defects in the obtained ZnO ZB structure.

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Published

2022-07-05

How to Cite

Даулетбекова, А., Акылбекова, А., Гиниятова, Ш., Баймуханов, З., Власукова, Л., Акилбеков, А., Усеинов, А., Козловский, А., & Карипбаев, Ж. (2022). Structure, electrical properties and luminescence of ZnO nanocrystals deposited in SiO 2 /Si track templates. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, 128(3), 57–66. https://doi.org/10.32523/2616-6836-2019-128-3-57-66

Issue

Vol. 128 No. 3 (2019)

Section

Статьи

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