| Autor: |
K. V. Bogdanov, M. V. Zhukovskaya, V. Yu. Osipov, E. V. Ushakova, M. A. Baranov, K. Takai, A. Rampersaud, A. V. Baranov |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
APL Materials, Vol 6, Iss 8, Pp 086104-086104-8 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2166-532X |
| DOI: |
10.1063/1.5045535 |
| Popis: |
Synthetic high-pressure high-temperature (HPHT) microdiamonds demonstrate strong resonant-like enhancement of the NV− photoluminescence (PL) at unexpectedly low concentration of the substitutional nitrogen atoms (NS) of 90 ppm, which is significantly smaller than the ∼250 ppm characteristic for conventional HPHT synthesis. The EPR, Raman, and luminescent spectroscopies, including time-resolved PL, provide evidence that this is due to competition between the increase in PL with increasing concentration of the NV− centers and nonradiative deactivation of these centers by defects induced by the NS in the diamond crystal lattice. It is suggested that the intensity of the NV− center emission can be optimized by the appropriate choice of nitrogen doping concentration which does not substantially disrupt the diamond crystal lattice. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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