Luminescent properties of diamond single crystals of pyramidal shape

Алексеев, А. М.; Tuyakova, Feruza T.; Obraztsova, Ekaterina A.; Коростылев, Е. В.; Klinov, Dmitry V.; Prusakov, Kirill; Malykhin, Sergey A.; Исмагилов, Р. Р.

doi:10.1134/s1063783416110020

Cited by 3 publications

(5 citation statements)

References 23 publications

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“…These details include spectral characteristics of the luminescence, dependence of the spectral lines on temperature and excitation wavelength, their decay time dependence, and phonon vibronic bands characteristics. In the preliminary investigation, we have established that luminescent characteristics of SCD indicate on nitrogen and silicon impurities contaminations . While the nitrogen‐related color centers are distributed more or less homogeneously in the crystallites, the silicon centers are concentrated predominantly at their apexes.…”

Section: Resultsmentioning

confidence: 97%

“…The advanced experimental techniques used in this study allow obtaining much more details about CL and PL spectra in comparison with our preliminary investigations reported in Refs. . These details include spectral characteristics of the luminescence, dependence of the spectral lines on temperature and excitation wavelength, their decay time dependence, and phonon vibronic bands characteristics.…”

Section: Resultsmentioning

confidence: 99%

“…In this study, we focused mostly on the analysis of crystallite luminescent properties on the whole. The spectra discussed in this work were observed near the middle of the SCD and are used here as the most representative for the whole crystallite while spectra variations along the needles are discussed in other our works …”

Section: Resultsmentioning

confidence: 99%

“…Results of preliminary investigations of these properties have been reported in Refs. . Here we present results of our studies of the diamond needle‐like single crystals aimed to further revealing peculiarities of their photo‐ and cathode‐luminescent characteristics.…”

Section: Introductionmentioning

confidence: 93%

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Luminescent Characteristics of Needle‐Like Single Crystal Diamonds

Malykhin

Houard

Исмагилов

et al. 2017

Physica Status Solidi (b)

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Luminescent properties of needle-like single crystal diamonds are investigated in a wide range of wavelength. The luminescent spectra with zero phonon lines centered at 389, 442, 468, 534, 563, 575, and 738 nm are detected using excitation by photons and electrons. Obtained photo-and cathodo-luminescent (PL and CL) spectra indicate presence in the singlecrystal diamond needles of nitrogen-and silicon-vacancy centers as well as substitutional or/and interstitials related to these atomic impurities. The dependencies of PL intensities of the 575 and 738 nm lines (related, correspondingly, to nitrogen-and silicon-vacancy centers) on excitation wavelength are determined. Time-resolved measurements are performed for the 575 nm PL line. The luminescence decay behavior for this line demonstrates the presence of recombination processes with characteristic times of about 28 ns (on 200 ns time scale) and 2.8 ns (on 20 ns time scale).

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

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Luminescent Characteristics of Needle‐Like Single Crystal Diamonds

Malykhin

Houard

Исмагилов

et al. 2017

Physica Status Solidi (b)

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“…Relatively large intensity of the negatively charged SiV color center witnesses about quite effective formation of these color centers in SCDNs during CVD growth using silicon substrate as a source of silicon atoms comparing with formation of nitrogen‐vacancy (NV) centers resulted from nitrogen introduction from uncontrollable gas admixtures in the CVD reactor . The possible mechanism of SiV color centers formation in CVD diamond grown using silicon substrate includes etching of the substrate by activated hydrogen and introduction of the vaporized silicon into diamond lattice .…”

Section: Resultsmentioning

confidence: 99%

Formation of GeV, SiV, and NV Color Centers in Single Crystal Diamond Needles Grown by Chemical Vapor Deposition

Malykhin

Mindarava

Исмагилов³

et al. 2019

Physica Status Solidi (b)

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Herein the color centers formation in diamond crystallites of pyramidal shape grown by chemical vapor deposition (CVD) is described. The individual crystallites are extracted from polycrystalline films grown on silicon substrates. The silicon‐vacancy (SiV), germanium‐vacancy (GeV), and nitrogen‐vacancy (NV) centers are created by introducing corresponding precursors from substrate material, gaseous nitrogen, and thermally evaporated germanium added during CVD. Some amount of NV centers detected in all types of the diamond crystallites is assigned to uncontrollable presence of nitrogen in the CVD reactor. The low temperature photoluminescence spectra indicate presence of ensembles of SiV centers in diamond structure. The SiV centers are concentrated predominantly at apexes of the diamond crystallites located at substrate surface. Intense growth of CN radicals in plasma‐activated gas environment during CVD process is detected after nitrogen gas addition. The crystallites obtained with the nitrogen addition demonstrate significant variation of their pyramid angle. The photoluminescence spectra of crystallites grown with nitrogen addition demonstrate increase of both negatively and neutrally charged states of NV color center. The GeV centers are created via thermal evaporation of pure Ge during CVD growth. The photoluminescence spectra of the crystallites grown with Ge addition demonstrate presence of GeV color centers ensemble.

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