Chemical control of the charge state of nitrogen-vacancy centers in diamond
By M. Hauf, B. Grotz, B. Naydenov, M. Dankerl, S. Pezzagna, J. Meijer, Fedor Jelezko, J. Wrachtrup, M. Stutzmann, F. Reinhard and 1 more. 2010
297 citations recorded by the source corpus.
We investigate the effect of surface termination on the charge state of nitrogen vacancy centers, which have been ion-implanted few nanometers below the surface of diamond. We find that, when changing the surface termination from oxygen to hydrogen, previously stable NV- centers convert into NV0 and, subsequently, into an unknown non-fluorescent state. This effect is found to depend strongly on the implantation dose. Simulations of the electronic band structure confirm the dissappearance of NV- in the vicinity of the hydrogen-terminated surface. The band bending, which induces a p-type surface conductive layer leads to a depletion of electrons in the nitrogen vacancies close to the surface. Therefore, hydrogen surface termination provides a chemical way for the control of the charge state of nitrogen-vacancy centers in diamond. Furthermore, it opens the way to an electrostatic control of the charge state with the use of an external gate electrode.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/dac7add5b27e13e2e2c2d14a2438583b4cb3f655
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In Materials Chemistry
Citations in the corpus
- Nitrogen-vacancy centers in diamond: nanoscale sensors for physics and biology. (2014, background): “Surface termination by oxygen or fluorine, for example, was found to favor NV−, whereas termination by hydrogen (and, to a minor extent, chlorine) was found to favor NV0 because of surface band bending (28, 96, 98).”
- Creation and nature of optical centres in diamond for single-photon emission—overview and critical remarks (2011, background): “In particular, negatively charged NV centres are mainly produced with an oxygen-terminated surface [21]–[23].”