We investigated charge states of nitrogen vacancy (NV) centers in diamond single crystals. The charge states were evaluated using concentrations of both negatively charged (NV−) and neutral-state (NV0) NV centers. This study specifically examines diamond crystals containing mainly neutral substitutional nitrogen (N0s), NV− centers, and NV0 centers. Results show that the charged states of NV centers evaluated for this study depended on concentrations of both neutral substitutional nitrogen (N0s) and NVT centers, which is a sum of [NV−] and [NV0]. The NV centers were fully negatively charged when the ratio of [NVT] to [N0s] was 1%–20% in our diamond crystals. When [NVT]/[N0s] is larger than 20%–30%, NV0 centers appeared gradually. The concentration ratio between NV− centers and NV0 centers was described using an equilibrium equation.
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20 December 2021
Research Article|
December 20 2021
Equilibrium charge state of NV centers in diamond
Chikara Shinei
;
Chikara Shinei
a)
1
National Institute for Materials Science
, Tsukuba, Ibaraki 305-0044, Japan
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Masashi Miyakawa;
Masashi Miyakawa
1
National Institute for Materials Science
, Tsukuba, Ibaraki 305-0044, Japan
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Shuya Ishii
;
Shuya Ishii
2
National Institutes for Quantum Science and Technology
, Takasaki, Gunma 370-1292, Japan
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Seiichi Saiki;
Seiichi Saiki
2
National Institutes for Quantum Science and Technology
, Takasaki, Gunma 370-1292, Japan
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Shinobu Onoda;
Shinobu Onoda
2
National Institutes for Quantum Science and Technology
, Takasaki, Gunma 370-1292, Japan
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Takashi Taniguchi
;
Takashi Taniguchi
1
National Institute for Materials Science
, Tsukuba, Ibaraki 305-0044, Japan
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Takeshi Ohshima
;
Takeshi Ohshima
2
National Institutes for Quantum Science and Technology
, Takasaki, Gunma 370-1292, Japan
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Tokuyuki Teraji
Tokuyuki Teraji
a)
1
National Institute for Materials Science
, Tsukuba, Ibaraki 305-0044, Japan
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Appl. Phys. Lett. 119, 254001 (2021)
Article history
Received:
November 23 2021
Accepted:
December 06 2021
Citation
Chikara Shinei, Masashi Miyakawa, Shuya Ishii, Seiichi Saiki, Shinobu Onoda, Takashi Taniguchi, Takeshi Ohshima, Tokuyuki Teraji; Equilibrium charge state of NV centers in diamond. Appl. Phys. Lett. 20 December 2021; 119 (25): 254001. https://doi.org/10.1063/5.0079687
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