Influence of microwave plasma parameters on light emission from SiV color centers in nanocrystalline diamond films

• Authors: László Himics , Sára Tóth , Miklós Veres , Péter Csíkvári , Margit Koós
• Languages of publication: EN

Abstracts

EN

Zero phonon line (ZPL) shape, position and integral intensity of SiV defect center in diamond is presented for nanocrystalline diamond (NCD) films grown at different conditions, NCD films of average grain sizes from ~50 nm up to ~180 nm have been deposited onto c-Si wafer at substrate temperature of 700 and 850oC from mixture with different CH4 and H2 ratios using MWCVD process. Light emission of SiV defect center and Raman scattering properties of NCD samples were measured on a Renishaw micro-Raman spectrometer with 488 nm excitation. Scanning electron microscopy images were used for monitoring surface morphology and for the analysis of the average grain sizes. Sample thickness was determined by in situ laser reflection interferometry. Characteristics of SiV ZPL are discussed in light of the morphology, bonding structure and average grain size of NCD films.

Keywords

EN

nanocrystalline diamond; MW CVD; SiV color center; photoluminescence; Raman scattering

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2015
• Volume: 13
• Issue: 1

Dates

online

17 - 11 - 2014

accepted

26 - 5 - 2014

received

31 - 1 - 2014

Contributors

author

László Himics

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics of the Hungarian Academy of Sciences, H-1525 Budapest, Hungary

author

Sára Tóth

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics of the Hungarian Academy of Sciences, H-1525 Budapest, Hungary

author

Miklós Veres

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics of the Hungarian Academy of Sciences, H-1525 Budapest, Hungary

author

Péter Csíkvári

• Department of Atomic Physics, Budapest University of Technology and Economics, H-1521 Budapest, Hungary>

author

Margit Koós

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics of the Hungarian Academy of Sciences, H-1525 Budapest, Hungary

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Identifiers

DOI

10.1515/chem-2015-0034