Photoluminescent properties of single crystal diamond microneedlesстатья
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 22 февраля 2018 г.
Аннотация:Single crystal needle-like diamonds shaped as rectangular pyramids were produced by combination of
chemical vapor deposition and selective oxidation with dimensions and geometrical characteristics
depending on the deposition process parameters. Photoluminescence spectra and their dependencies on
wavelength of excitation radiation reveal presence of nitrogen- and silicon-vacancy color centers in the
diamond crystallites. Photoluminescence spectra, intensity mapping, and fluorescence lifetime imaging
microscopy indicate that silicon-vacancy centers are concentrated at the crystallites apex while nitrogenvacancy
centers are distributed over the whole crystallite. Dependence of the photoluminescence on
excitation radiation intensity demonstrates saturation and allows estimation of the color centers density.
The combination of structural parameters, geometry and photoluminescent characteristics are prospective
for advantageous applications of these diamond crystallites in quantum information processing
and optical sensing.