What question did this study set out to answer?

To investigate the mechanism underlying the brightness variations and reduced fluorescence quantum yields observed in diamonds engineered with high densities of nitrogen-vacancy centres.

March 1, 2022New Journal of PhysicsOpen Access

Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond

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Authors

MCMarco CapelliMIT University LLLukas LindnerTU Wien TLTingpeng LuoFraunhofer Institute for Applied Solid State Physics

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Implication

Experimental study reveals that proximal nitrogen impurities quench fluorescence in diamond nitrogen-vacancy centres, indicating key trade-offs in high-density quantum device fabrication.

Key Points

To investigate the mechanism underlying the brightness variations and reduced fluorescence quantum yields observed in diamonds engineered with high densities of nitrogen-vacancy centres.
Synthesized diamond samples across a range of nitrogen impurity concentrations spanning 1.81 ppm to 380 ppm.
Irradiated all diamond samples with high-energy electrons to induce high densities of nitrogen-vacancy centres relative to background nitrogen impurities.
Measured emission lifetimes and calculated relative fluorescence quantum yield across varying nitrogen densities using ensemble spectroscopy.
Fluorescence lifetime shortened markedly from 13.9 ns at a low nitrogen density of 1.81 ppm down to 4.4 ns at 380 ppm.
Relative fluorescence quantum yield declined from 77.4% to 32% as nitrogen density increased from 88 ppm to 380 ppm.
Non-radiative energy transitions triggered by nearby nitrogen impurities were identified as the primary quenching mechanism causing emission inhomogeneity.

Cite This Study

Capelli et al. (2022) studied this question.

synapsesocial.com/papers/69dd598180eea7d3f699bac3 https://doi.org/10.1088/1367-2630/ac5ca9

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Implication

Experimental study reveals that proximal nitrogen impurities quench fluorescence in diamond nitrogen-vacancy centres, indicating key trade-offs in high-density quantum device fabrication.

Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond

Discussion

Member takes

Implication

Key Points

Cite This Study

Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond

Discussion

Member takes

Implication

Key Points

Cite This Study

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