Proper surface termination for luminescent near-surface NV centers in diamond

Moloud Kaviani; Peter Deák; Bálint Aradi; Thomas Frauenheim; Jyh Pin Chou; Adam Gali

doi:10.1021/nl501927y

Proper surface termination for luminescent near-surface NV centers in diamond

Moloud Kaviani, Peter Deák, Bálint Aradi, Thomas Frauenheim, Jyh Pin Chou, Adam Gali

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

By accurate quantum mechanical simulations, we show that typical diamond surfaces possess image states with sub-bandgap energies, and compromise the photostability of NV centers placed within a few nm of the surface. This occurs due to the mixture of the NV-related gap states and the surface image states, which is a novel and distinct process from the well-established band bending effect. We also find that certain types of coverages on the diamond surface may lead to blinking or bleaching due to the presence of acceptor surface states. We identify a combination of surface terminators that is perfect for NV-center based nanoscale sensing.

Original language	English
Pages (from-to)	4772-4777
Number of pages	6
Journal	Nano Letters
Volume	14
Issue number	8
DOIs	https://doi.org/10.1021/nl501927y
Publication status	Published - 2014 Aug 13

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl501927y

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AU - Kaviani, Moloud

AU - Deák, Peter

AU - Aradi, Bálint

AU - Frauenheim, Thomas

AU - Chou, Jyh Pin

AU - Gali, Adam

PY - 2014/8/13

Y1 - 2014/8/13

N2 - By accurate quantum mechanical simulations, we show that typical diamond surfaces possess image states with sub-bandgap energies, and compromise the photostability of NV centers placed within a few nm of the surface. This occurs due to the mixture of the NV-related gap states and the surface image states, which is a novel and distinct process from the well-established band bending effect. We also find that certain types of coverages on the diamond surface may lead to blinking or bleaching due to the presence of acceptor surface states. We identify a combination of surface terminators that is perfect for NV-center based nanoscale sensing.

AB - By accurate quantum mechanical simulations, we show that typical diamond surfaces possess image states with sub-bandgap energies, and compromise the photostability of NV centers placed within a few nm of the surface. This occurs due to the mixture of the NV-related gap states and the surface image states, which is a novel and distinct process from the well-established band bending effect. We also find that certain types of coverages on the diamond surface may lead to blinking or bleaching due to the presence of acceptor surface states. We identify a combination of surface terminators that is perfect for NV-center based nanoscale sensing.

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Proper surface termination for luminescent near-surface NV centers in diamond

Abstract

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