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

doi:10.1088/1361-648X/acecee

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

J Phys Condens Matter. 2023 Sep 15;35(50). doi: 10.1088/1361-648X/acecee.

Authors

Fabio Isa^{1

2

3}, Matthew Joliffe², Brendan Wouterlood², Naomi He Ho⁴, Thomas Volz^{2

3}, Avi Bendavid^{1

4}, Lachlan J Rogers^{2

3}

Affiliations

¹ CSIRO Manufacturing, 36 Bradfield Road, Lindfield, New South Wales 2070, Australia.
² Department of Physics and Astronomy, Macquarie University, Macquarie Park, New South Wales 2109, Australia.
³ ARC Centre of Excellence for Engineered Quantum Systems (EQUS), Australia.
⁴ School of Materials Science and Engineering, UNSW Sydney, High Street, Kensington, New South Wales 2052, Australia.

PMID: 37531963
DOI: 10.1088/1361-648X/acecee

Abstract

Isolated, micro-metre 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 micro-grain structure analysis, indicates that the diamonds are icosahedral or bi-crystals. Icosahedral diamonds have higher (up toσh= 2.3 GPa), and wider distribution (Δσh= 4.47 GPa) of hydrostatic stress built up at the micro-crystal grain boundaries, compared to the other crystals. The number and spectral shape of SiV^-colour centres incorporated in the micro-diamonds (MDs) is analysed, and estimated by means of temperature dependent photoluminescence measurements, and Monte Carlo simulations. The Monte Carlo simulations indicates that the number of SiV^-colour centres is a few thousand per MD.

Keywords: colour centre; micro-diamonds; optical; silicon-vacancy; structure.

Creative Commons Attribution license.