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 σh = 2.3 GPa), and wider distribution (Δσh = 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.
@article{arxiv.2208.08075,
title = {Structural and optical properties of micro-diamonds with SiV- color centers},
author = {Fabio Isa and Matthew Joliffe and Brendan Wouterlood and Naomi He Ho and Thomas Volz and Avi Bendavid and Lachlan J. Rogers},
journal= {arXiv preprint arXiv:2208.08075},
year = {2022}
}