Decay rate statistics of NV centres in diamond on plasmonic and dielectric substrates
Decay rate statistics of NV centres in diamond on plasmonic and dielectric substrates
We study experimentally the statistics of the emission characteristics of NV0 centres in diamond nanoparticles in different dielectric environments. Diamond nanoparticleswith sizes of ~120 nm each containing a large number of NV centres (>1000) are deposited on different substrates, including dielectrics (silicon, silicon nitride, diamond) and plasmonic metals (silver). We record lifetime and emission spectra by time-resolved cathodoluminescence (TR-CL). For each different substrate we collect data from 60 different clusters of particles and study the statistics of their emission properties. We observe a strong variation of the lifetime statistics in different substrates, with the shortest average decay rate and narrowest distribution occurring in the case of diamond substrate. On the other hand, plasmonic (Ag) and high index dielectric (Si) substrate result in longer lifetimes and substantially broader distributions. Our results provide insights into the role of the dielectric environment and indicate the presence of complex interactions with the substrate.
Li, Hao
a7a72307-808b-40bc-aa3b-b0d04f7378ce
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
16 September 2019
Li, Hao
a7a72307-808b-40bc-aa3b-b0d04f7378ce
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Li, Hao, Ou, Jun-Yu, Papasimakis, Nikitas, Fedotov, Vassili and Zheludev, Nikolai
(2019)
Decay rate statistics of NV centres in diamond on plasmonic and dielectric substrates.
Electron Beam Spectroscopy for Nanophotonics 2019, , Paris, France.
16 - 19 Sep 2019.
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Conference or Workshop Item
(Other)
Abstract
We study experimentally the statistics of the emission characteristics of NV0 centres in diamond nanoparticles in different dielectric environments. Diamond nanoparticleswith sizes of ~120 nm each containing a large number of NV centres (>1000) are deposited on different substrates, including dielectrics (silicon, silicon nitride, diamond) and plasmonic metals (silver). We record lifetime and emission spectra by time-resolved cathodoluminescence (TR-CL). For each different substrate we collect data from 60 different clusters of particles and study the statistics of their emission properties. We observe a strong variation of the lifetime statistics in different substrates, with the shortest average decay rate and narrowest distribution occurring in the case of diamond substrate. On the other hand, plasmonic (Ag) and high index dielectric (Si) substrate result in longer lifetimes and substantially broader distributions. Our results provide insights into the role of the dielectric environment and indicate the presence of complex interactions with the substrate.
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Published date: 16 September 2019
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Electron Beam Spectroscopy for Nanophotonics 2019, , Paris, France, 2019-09-16 - 2019-09-19
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Local EPrints ID: 448893
URI: http://eprints.soton.ac.uk/id/eprint/448893
PURE UUID: 6d928143-1f5e-406e-a0e1-cc1868f738f8
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Date deposited: 10 May 2021 16:30
Last modified: 23 Feb 2023 02:57
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