Five‐Nanometer Diamond with Luminescent Nitrogen‐Vacancy Defect Centers
Copyright policy )Five‐Nanometer Diamond with Luminescent Nitrogen‐Vacancy Defect Centers
A study was conducted to investigate the properties of weakly bound clusters of single-digit nanodiamonds (SND) using spectrally and temporally resolved luminescence detection, electron paramagnetic resonance (EPR) spectroscopy, and transmission electron microscopy (SEM). Nitrogen-vacancy (NV) centers were created in diamonds by high-energy proton irradiation followed by thermal annealing. Samples containing equal weights of 55-nm HTHP diamonds and SNDs were uniformly distributed on quartz substrates for luminescence measurements. It was observed that the SNDs exhibited significant luminescence in the red spectral region before irradiation. The emission was blue-shifted and the absence of the zero-phonon lines at 637 and 575 nm indicated that the luminescence did not originate from NV centers as compared with the NV spectrum.
- Shinshu University Japan
- University of Sydney Australia
- University of Queensland Australia
- University of Queensland Australia
- Swansea University United Kingdom
raman, Luminescence, Nitrogen, 0299 Other Physical Sciences, nanocrystalline diamond, nitrogen vacancies, 530, C1, 970102 Expanding Knowledge in the Physical Sciences, Microscopy, Electron, Transmission, fluorescent nanodiamonds, carbon, diamonds, Electron Spin Resonance Spectroscopy, magnetic-resonance, temperature, selective oxidation, cellular biomarkers, microscopy, nanoparticles, photoluminescence, Diamond, EPR spectroscopy
raman, Luminescence, Nitrogen, 0299 Other Physical Sciences, nanocrystalline diamond, nitrogen vacancies, 530, C1, 970102 Expanding Knowledge in the Physical Sciences, Microscopy, Electron, Transmission, fluorescent nanodiamonds, carbon, diamonds, Electron Spin Resonance Spectroscopy, magnetic-resonance, temperature, selective oxidation, cellular biomarkers, microscopy, nanoparticles, photoluminescence, Diamond, EPR spectroscopy
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