Redox and Organic Post-Annealing Chemical Processes Impacting the Fluorescence of N V ⁻ Centers into Nanodiamonds

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• 作者：Philippe Babilotte
• 关键词：Optical properties related to treatment conditions ; Diamond ; Surface cleaning ; Fluorescence ; NV− colored centers
• 刊名：Journal of Fluorescence
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：26
• 期：6
• 页码：2321-2332
• 全文大小：2,053 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Biomedicine
  Biophysics and Biomedical Physics
  Biotechnology
  Biochemistry
  Analytical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4994
• 卷排序：26

文摘

Among the several aspects involved into the synthesis of monocharged nitrogene-vacancy NV− colored centers produced into nanodiamonds ND, the post-annealing cleaning process, such as sulfo-nitric acid cleaning or thermal oxidation under acid conditions, can be seen as a factor impacting the optical response of these NV− colored centers. A significative difference of optical response is in fact noticed modifying the post-annealing treatment conditions, between a pure oxidative treatment at room temperature and a mixed-process including oxidation and thermal activation. Specific chemical processes and surface chemical aspects are proposed to explain the optical signals obtained by fluorescence. Some chemical pathways are then found more efficient than others to limit the fluorescence quenching of these colored NV− emitters.