Study of the optimal conditions for NV- center formation in type 1b diamond, using photoluminescence and positron annihilation spectroscopies

Abstract

We studied the parameters to optimize the production of negatively-charged nitrogen-vacancy color centers (NV-) in type~1b single crystal diamond using proton irradiation followed by thermal annealing under vacuum. Several samples were treated under different irradiation and annealing conditions and characterized by slow positron beam Doppler-broadening and photoluminescence (PL) spectroscopies. At high proton fluences another complex vacancy defect appears limiting the formation of NV-. Concentrations as high as 2.3 x 10^18 cm^-3 of NV- have been estimated from PL measurements. Furthermore, we inferred the trapping coefficient of positrons by NV-. This study brings insight into the production of a high concentration of NV- in diamond, which is of utmost importance in ultra-sensitive magnetometry and quantum hybrid systems applications.

References in corpus (7)

• High-sensitivity diamond magnetometer with nanoscale resolution
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• Coherence of Nitrogen-Vacancy Electronic Spin Ensembles in Diamond
• Cavity-QED based on collective magnetic dipole coupling: spin ensembles as hybrid two-level systems
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• Creating diamond color centers for quantum optical applications
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Cited by in corpus (17)

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• Maskless and targeted creation of arrays of colour centres in diamond using focused ion beam technology
• Systematic study of defect-related quenching of NV luminescence in diamond with time correlated single photon counting spectroscopy
• Enhanced concentrations of nitrogen-vacancy centers in diamond through TEM irradiation
• Efficient Conversion of Nitrogen to Nitrogen-Vacancy Centers in Diamond Particles with High-Temperature Electron Irradiation
• Optimal control of a nitrogen-vacancy spin ensemble in diamond for sensing in the pulsed domain
• Time-Resolved Cathodoluminescence in an Ultrafast Transmission Electron Microscope
• Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond
• Optically Induced Polarization and Depolarization of an Electron Spin in a Nitrogen-Vacancy Center of Diamond Nano-crystals
• Direct formation of nitrogen-vacancy centers in nitrogen doped diamond along the trajectories of swift heavy ions
• Nitrogen-Vacancy Color Centers in Nanodiamonds as Reference Single-Photon Emitters
• Towards a test of quantum gravity with a levitated nanodiamond containing a spin
• Robust multicolor single photon emission from point defects in hexagonal boron nitride
• Creating high density ensembles of nitrogen-vacancy centers in nitrogen-rich type Ib nanodiamonds