Method to Produce Light-Emitting Nano-Particles of Diamond
AssigneeInserm (Institut National De La Sante Et De La Recherche Medicale)
InventorsJean-Paul Boudou, Patrick Curmi
Life of this patent
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Abstract
Method to produce diamonds containing Nitrogen-Vacancy centres from diamonds grown by a high pressure and high temperature process and containing isolated substitutional nitrogen, comprising: —Irradiating (12) said diamonds by an electron beam such that the irradiation dose is comprised between 1017 and 1019 electrons per square centimeter; —annealing (14) the irradiated diamonds in vacuum or in a inert atmosphere at a temperature above 700° C. and for at least 1 hour; characterized in that said electron beam has an acceleration energy above 7 MeV.
Claims14
Method to produce diamonds containing Nitrogen-Vacancy centres from diamonds having a size above 150 micrometers grown by a high pressure and high temperature process and containing isolated substitutional nitrogen, comprising:
- Irradiating (12) said diamonds by an electron beam such that the irradiation dose is comprised between 1017 and 1019 electrons per square centimeter;
- annealing (14) the irradiated diamonds in vacuum or in a inert atmosphere at a temperature above 700° C. and for at least 1 hour;
- characterized in that said electron beam has an acceleration energy above 7 MeV.
Diamond characterized in that it contains more than 600 Nitrogen-Vacancy centres per cubic micrometer.
Dependencies are inferred from the claim text.