2021
DOI: 10.1002/pssa.202170021
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Charge‐Assisted Engineering of Color Centers in Diamond

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Cited by 3 publications
(3 citation statements)
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“…We attribute the observed changes in ODMR contrast to the conversion of NV – to NV 0 , through a mechanism illustrated in Figure , supported by measurements described in Figures and . Due to near-surface NV fabrication (3 keV N + ions), a high N/NV ratio (∼1%) is present in the NVD sample, and the residual nitrogen atoms (P1 centers) act as a source of electrons to maintain NV – as preferential NV charge state. , The high electronegativity of the oxygen-functionalized surface also helps to maintain their stability . During laser exposure, excitation of surface species can result in the detachment of nondiamond carbon and oxygen functionalities and, in the absence of environmental oxygen (e.g., in vacuum), surface electron traps develop which reduce the surface electronegativity, cause upward band bending near the surface, and lead to NV charge state conversion.…”
Section: Resultsmentioning
confidence: 99%
“…We attribute the observed changes in ODMR contrast to the conversion of NV – to NV 0 , through a mechanism illustrated in Figure , supported by measurements described in Figures and . Due to near-surface NV fabrication (3 keV N + ions), a high N/NV ratio (∼1%) is present in the NVD sample, and the residual nitrogen atoms (P1 centers) act as a source of electrons to maintain NV – as preferential NV charge state. , The high electronegativity of the oxygen-functionalized surface also helps to maintain their stability . During laser exposure, excitation of surface species can result in the detachment of nondiamond carbon and oxygen functionalities and, in the absence of environmental oxygen (e.g., in vacuum), surface electron traps develop which reduce the surface electronegativity, cause upward band bending near the surface, and lead to NV charge state conversion.…”
Section: Resultsmentioning
confidence: 99%
“…Nevertheless, reaching larger ST1 densities (in the parts per million range) will necessitate a strong improvement of the ST1 creation yield. As possible methods, the exploration of more adapted CVD growth or annealing conditions , and/or the examination of charge-assisted defect engineering techniques using predoped diamond ,, or active Fermi-level tuning may be envisaged, for they are known to have a significant effect on the formation of NV, V 2 , or NVH centers in the case of nitrogen implantation. Finally, laser-assisted vacancy creation and diffusion , may also be employed to increase the ST1 density, as already done for color centers in diamond or silicon.…”
Section: Resultsmentioning
confidence: 99%
“…It is typically determined by the energy difference between the ground state and the excited state of the emitter. The most popular emitters are QDs [157,158] or color centers embedded within a solid-state matrix, [159,160] The formation energy of QD-based single-photon sources depends on factors such as the bandgap of the material, the QD size, and the surrounding environment. Color centers are atomic defects or impurities in the crystal lattice of a material that exhibit discrete energy levels.…”
Section: Discussionmentioning
confidence: 99%