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Issue 4, 2019
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Controlling the fluorescence properties of nitrogen vacancy centers in nanodiamonds

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Abstract

Control over the formation and fluorescence properties of nitrogen vacancy (NV) centers in nanodiamonds (NDs) is an important factor for their use in medical and sensor applications. However, reports providing a deep understanding of the potential factors influencing these properties are rare and focus only on a few influencing factors. The current contribution targets this issue and we report a comprehensive study of the fluorescence properties of NVs in nanodiamonds as a function of electron irradiation fluence and surface termination. Here we show that process parameters such as defect center interactions, in particular, different nitrogen defects and radiation induced lattice defects, as well as surface functionalities have a strong influence on the fluorescence intensity, fluorescence lifetime and the charge state ratio of the NV centers. By employing a time-correlated single photon counting approach we also established a method for fast macroscopic monitoring of the fluorescence properties of ND samples. We found that the fluorescence properties of NV centers may be controlled or even tuned depending upon the radiation treatment, annealing, and surface termination.

Graphical abstract: Controlling the fluorescence properties of nitrogen vacancy centers in nanodiamonds

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Publication details

The article was received on 26 Sep 2018, accepted on 06 Dec 2018 and first published on 11 Dec 2018


Article type: Paper
DOI: 10.1039/C8NR07828A
Nanoscale, 2019,11, 1770-1783

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    Controlling the fluorescence properties of nitrogen vacancy centers in nanodiamonds

    C. Laube, T. Oeckinghaus, J. Lehnert, J. Griebel, W. Knolle, A. Denisenko, A. Kahnt, J. Meijer, J. Wrachtrup and B. Abel, Nanoscale, 2019, 11, 1770
    DOI: 10.1039/C8NR07828A

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