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Nickel-Silicon Related Color Center Formed in Nanodiamond Grains under CVD Growth


Affiliations
1 Institute for Solid State Physics and Optics,Wigner Research Center for Physics, Hungarian Academy of Sciences, P.O. Box 49, Budapest 1525, Hungary
 

Formation of optical centers in nanodiamond grains with narrow, near-infrared emission at room temperature is one of the most important challenges nowadays. Our aim was to form a metal-related color center through the CVD growth process of nanodiamond. Previously undocumented photoluminescence (PL) system with 865 nm zero-phonon line (ZPL) and 2 nm full width at halfmaximum (FWHM) was successfully created in nanodiamond grains. According to the detailed analysis of the spectral features of the ZPL and quasilocalmodes of the vibronic sideband, a complex center containing Ni and Si atoms could be accounted for these PL features. The inclusion of Ni and Si impurity atoms in the complex optical center was strengthened by micro-Raman spectroscopy performed in the frequency range due to quasilocal vibrations of the vibronic sideband.
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  • Nickel-Silicon Related Color Center Formed in Nanodiamond Grains under CVD Growth

Abstract Views: 59  |  PDF Views: 1

Authors

Sara Toth
Institute for Solid State Physics and Optics,Wigner Research Center for Physics, Hungarian Academy of Sciences, P.O. Box 49, Budapest 1525, Hungary
Laszlo Himics
Institute for Solid State Physics and Optics,Wigner Research Center for Physics, Hungarian Academy of Sciences, P.O. Box 49, Budapest 1525, Hungary
Margit Koos
Institute for Solid State Physics and Optics,Wigner Research Center for Physics, Hungarian Academy of Sciences, P.O. Box 49, Budapest 1525, Hungary

Abstract


Formation of optical centers in nanodiamond grains with narrow, near-infrared emission at room temperature is one of the most important challenges nowadays. Our aim was to form a metal-related color center through the CVD growth process of nanodiamond. Previously undocumented photoluminescence (PL) system with 865 nm zero-phonon line (ZPL) and 2 nm full width at halfmaximum (FWHM) was successfully created in nanodiamond grains. According to the detailed analysis of the spectral features of the ZPL and quasilocalmodes of the vibronic sideband, a complex center containing Ni and Si atoms could be accounted for these PL features. The inclusion of Ni and Si impurity atoms in the complex optical center was strengthened by micro-Raman spectroscopy performed in the frequency range due to quasilocal vibrations of the vibronic sideband.