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arXiv · 2208.08075

Structural and optical properties of micro-diamonds with SiV- color centers

Fabio Isa·Matthew Joliffe·Brendan Wouterlood·Naomi He Ho·Thomas Volz·Avi Bendavid·Lachlan J. Rogers
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Abstract

Isolated, micro-meter sized diamonds are grown by micro-wave plasma chemical vapour deposition technique on Si(001) substrates. Each diamond is uniquely identified by markers milled in the Si substrate by Ga+ focused ion beam. The morphology and micrograin structure analysis indicates that the diamonds are icosahedral or bi-crystals. Icosahedral diamonds have higher (up to $\sigma_\mathrm{h}$ = 2.3 GPa), and wider distribution ($\Delta\sigma_\mathrm{h}$ = 4.47 GPa) of hydrostatic stress built up at the microcrystal grain boundaries, compared to the other crystals. The number and spectral shape of SiV- color centers incorporated in the micro-diamonds is analysed, and estimated by means of temperature dependent photoluminescence measurements, and Montecarlo simulations. The Montecarlo simulations indicate that the number of SiV- color centers is a few thousand per micro-diamond.

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Fabio Isa, Matthew Joliffe, Brendan Wouterlood, Naomi He Ho, Thomas Volz, Avi Bendavid, Lachlan J. Rogers. 2022-08-17. Structural and optical properties of micro-diamonds with SiV- color centers. https://arxiv.org/abs/2208.08075

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