Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond

Lan-Yun Chang, Amanda S. Barnard, Christian Dwyer, Chris B. Boothroyd, Rosalie K. Hocking, Eiji Osawa, Rebecca J. Nicholls

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Detonation nanodiamond particles (DND) contain highly-stable nitrogen-vacancy (N-V) centers, making it important for quantum-optical and biotechnology applications. However, due to the small particle size, the N-V concentrations are believed to be intrinsically very low, spawning efforts to understand the formation of N-V centers and vacancies, and increase their concentration. Here we show that vacancies in DND can be detected and quantified using simulation-aided electron energy loss spectroscopy. Despite the small particle size, we find that vacancies exist at concentrations of about 1 at%. Based on this experimental finding, we use ab initio calculations to predict that about one fifth of vacancies in DND form N-V centers. The ability to directly detect and quantify vacancies in DND, and predict the corresponding N-V formation probability, has a significant impact to those emerging technologies where higher concentrations and better dispersion of N-V centres are critically required.

Original languageEnglish (US)
Pages (from-to)10548-10552
Number of pages5
JournalNanoscale
Volume8
Issue number20
DOIs
StatePublished - May 28 2016

ASJC Scopus subject areas

  • Materials Science(all)

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    Chang, L-Y., Barnard, A. S., Dwyer, C., Boothroyd, C. B., Hocking, R. K., Osawa, E., & Nicholls, R. J. (2016). Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond. Nanoscale, 8(20), 10548-10552. https://doi.org/10.1039/c6nr01888b