The effects of surface oxidation on luminescence of nano diamonds

Smith, Brian N.; Gruber, Daniel; Plakhotnik, Taras

doi:10.1016/j.diamond.2009.12.009

Cited by 115 publications

(103 citation statements)

References 37 publications

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“…Prior to the removal of sp 2 shell through oxidation, DNDs exhibit a broad featureless photoluminescence (PL) spectrum. This has been linked to the presence of defects in the graphitic shell [27][28][29]. However, a direct evidence of such defects has not yet been reported.…”

Section: Resultsmentioning

confidence: 98%

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On the relation between chemical composition and optical properties of detonation nanodiamonds

Kirmani

Peng

Mahfouz

et al. 2015

Carbon

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a b s t r a c tThe morphology and presence of impurities strongly influence mechanical, optical, electrical, and thermal properties of detonation nanodiamonds (DNDs). Here we report insights on the chemical composition and its effect on the optical properties of the DNDs obtained by rate-zonal density gradient ultracentrifugation. Herein, for the first time, a detailed valence band structure of as-prepared and oxidized DNDs is reported. Photoemission spectroscopy (PES) measurements demonstrate that the defects, originating from fullerene-like C bonding in the sp 2 shells of the DNDs, are governing the literature-reported loss of the emission spectral features arising from the nitrogen-vacancy (NV) center excitations. X-ray photoelectron spectroscopy (XPS) measurements reveal that nitrogen is present in the DNDs in the form of N-O bonded species located at the surface region/sp 2 shells, while in core of the DND it is in the form of N-C/N@C species.

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Section: Resultsmentioning

confidence: 98%

“…However, upon oxidation this grows into a sharp spectral feature (blue spectrum, Fig. S2) signaling significant removal of the sp 2 shell [28,29].…”

Section: Resultsmentioning

confidence: 99%

On the relation between chemical composition and optical properties of detonation nanodiamonds

Kirmani

Peng

Mahfouz

et al. 2015

Carbon

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“…Previous works report that lifetime changes of color centers evidence interaction with various defects [12][13][14] as well as the photonic environment. 15 (9) ns], potentially due to a decrease in the effective refractive index close to the nanoscale apex.…”

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confidence: 99%

“…In the presence of graphitic or disordered carbon, s NV shortens. 12,13 In this context, a high level of Si doping, here possibly induced by substrate etching, 10 introduces structural defects. 18 Thus, this shortening of s NV might be attributed to incorporated Si potentially lowering crystalline quality and inducing nondiamond phases.…”

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confidence: 99%

Color center fluorescence and spin manipulation in single crystal, pyramidal diamond tips

Nelz

Fuchs

Opaluch

et al. 2016

Applied Physics Letters

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We investigate bright fluorescence of nitrogen (NV)- and silicon-vacancy color centers in pyramidal, single crystal diamond tips, which are commercially available as atomic force microscope probes. We coherently manipulate NV electronic spin ensembles with T2 = 7.7(3) μs. Color center lifetimes in different tip heights indicate effective refractive index effects and quenching. Using numerical simulations, we verify enhanced photon rates from emitters close to the pyramid apex rendering them promising as scanning probe sensors.

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“…Under these approximate starting conditions roughly 1 NV defect is created per 100 vacancies, giving about 0.16 NV per 10 nm diameter nanocrystal. The smallest size of NDs containing NV centres is reported to be 5 nm [34,35] in DNDs. DND powder was irradiated with 2.5 MeV protons in a linear accelerator with a dose of 5 × 10 15 cm 2 to demonstrate fl uorescence emission.…”

Section: Materials and Defects Synthesismentioning

confidence: 99%

Frontiers in diffraction unlimited optical methods for spin manipulation, magnetic field sensing and imaging using diamond nitrogen vacancy defects

Castelletto

2012

Nanophotonics

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The nitrogen vacancy defect centre in diamond has attracted intense research interest owing to their appealing optical and electronic properties, which have laid the ground for new approaches for diffraction unlimited optical methods. In particular, the optical detected magnetic resonance of the electron spin of nitrogen vacancy centre at room temperature underpins many areas in nanophotonics, spintronics and quantum optics. This article reviews the recent development of superresolution imaging and sensing nanoscopy based on this fascinating defect centre in diamond. These breakthroughs are presently indicating a new class of nanoscale sensors of tiny magnetic and electric fi elds at room temperature, as well as emerging fl uorescent and magnetic probes for next generation nanoscopy and all-optical spin recording.

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The effects of surface oxidation on luminescence of nano diamonds

Cited by 115 publications

References 37 publications

On the relation between chemical composition and optical properties of detonation nanodiamonds

On the relation between chemical composition and optical properties of detonation nanodiamonds

Color center fluorescence and spin manipulation in single crystal, pyramidal diamond tips

Frontiers in diffraction unlimited optical methods for spin manipulation, magnetic field sensing and imaging using diamond nitrogen vacancy defects

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