Diffusion of nitrogen in diamond and the formation of A-centres

Jones, R.; Goss, JP; Pinto, H.; Palmer, D.W.

doi:10.1016/j.diamond.2015.01.002

Cited by 51 publications

(42 citation statements)

References 25 publications

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“…Green luminescence can be attributed to irradiation‐induced defects, H3 centers, and nickel‐related impurity defects. [1a] Nickel is known to affect nitrogen diffusion at high temperatures and enhance formation of A centers (pairs of nitrogen atoms) . Nickel‐related complexes with nitrogen also have strong green photoluminescence.…”

Section: Discussionmentioning

confidence: 99%

“…[1a] Blue FDPs have not been made to date, due to the lack of a starting material containing an appreciable amount of nitrogen triplets. While A centers and H3 centers can be formed in bulk synthetic type Ib diamond via extended (hours) annealing at high temperatures (exceeding 1500 °C), such annealing times and temperatures would cause complete graphitization of particulate diamond. Thus, the critical barrier for production of green and blue FDP from synthetic (type Ib) diamond powder has been the lack of an effective annealing technology that allows for the creation of H3 and N3 assemblies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

From Fancy Blue to Red: Controlled Production of a Vibrant Color Spectrum of Fluorescent Diamond Particles

Dei

Zeldin²,

Nunn

et al. 2019

Adv Funct Materials

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minutes) and precise temperature and time control (minute timescales). This RTA approach allows for controlled and highly reproducible formation of specific color centers in type Ib synthetic diamond particles that previously was not possible. Starting with electron-irradiated synthetic diamond particles, controlled production of NV, H3, N3, and mixtures thereof, depending on the annealing temperature (between 700 and 2060 °C), has been demonstrated. The resulting FDPs exhibit fluorescence that covers a broad range of the visible spectrum, from red/NIR fluorescence to blue fluorescence. A systematic study of experimental factors and their influence on specific color center formation is detailed, including annealing temperature, irradiation dose, annealing dwell time, and nitrogen concentration in the starting diamond powder.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From Fancy Blue to Red: Controlled Production of a Vibrant Color Spectrum of Fluorescent Diamond Particles

Dei

Zeldin²,

Nunn

et al. 2019

Adv Funct Materials

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“…These strains may effectively generate various structural defects in the diamond lattice such as dislocations, vacancies and interstitials. The latter two defects are known to assist nitrogen migration and enhance the rate of nitrogen aggregation [48,49].…”

Section: Nitrogen Impurity Content In the Grown Diamond Layersmentioning

confidence: 99%

Diamond crystallization in a CO 2 -rich alkaline carbonate melt with a nitrogen additive

Khokhryakov

Palyanov

Kupriyanov

et al. 2016

Journal of Crystal Growth

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“…In HPHT diamonds, the enhanced concentration of H3 centers is observed in less-stressed regions of the crystal and near dislocations [33]. In CVD diamonds, the 2NV defect can be obtained by a long-term high-temperature post-growth annealing to cause aggregation of individual nitrogen atoms or NV defects via their diffusion [34,35]. Under the CVD conditions, the growth temperature and duration are considered insufficient for the diffusion of nitrogen atoms or NV defects.…”

Section: Photoluminescence Scanning Spectroscopy On Growth Defects Onmentioning

confidence: 99%

Morphology of Diamond Layers Grown on Different Facets of Single Crystal Diamond Substrates by a Microwave Plasma CVD in CH4-H2-N2 Gas Mixtures

et al. 2017

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Epitaxial growth of diamond films on different facets of synthetic IIa-type single crystal (SC) high-pressure high temperature (HPHT) diamond substrate by a microwave plasma CVD in CH 4 -H 2 -N 2 gas mixture with the high concentration (4%) of nitrogen is studied. A beveled SC diamond embraced with low-index {100}, {110}, {111}, {211}, and {311} faces was used as the substrate. Only the {100} face is found to sustain homoepitaxial growth at the present experimental parameters, while nanocrystalline diamond (NCD) films are produced on other planes. This observation is important for the choice of appropriate growth parameters, in particular, for the production of bi-layer or multilayer NCD-on-microcrystalline diamond (MCD) superhard coatings on tools when the deposition of continuous conformal NCD film on all facet is required. The development of the film morphology with growth time is examined with SEM. The structure of hillocks, with or without polycrystalline aggregates, that appear on {100} face is analyzed, and the stress field (up to 0.4 GPa) within the hillocks is evaluated based on high-resolution mapping of photoluminescence spectra of nitrogen-vacancy NV optical centers in the film.

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Diffusion of nitrogen in diamond and the formation of A-centres

Cited by 51 publications

References 25 publications

From Fancy Blue to Red: Controlled Production of a Vibrant Color Spectrum of Fluorescent Diamond Particles

From Fancy Blue to Red: Controlled Production of a Vibrant Color Spectrum of Fluorescent Diamond Particles

Diamond crystallization in a CO 2 -rich alkaline carbonate melt with a nitrogen additive

Morphology of Diamond Layers Grown on Different Facets of Single Crystal Diamond Substrates by a Microwave Plasma CVD in CH4-H2-N2 Gas Mixtures

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