Diamond deposition on non-diamond microparticles: Toward the development of core-shell optical materials

Sedov, Vadim, Kuznetsov, Sergey, Martyanov, Artem, Tiazhelov, Ivan, Savin, Sergey, Mandal, Soumen ORCID: https://orcid.org/0000-0001-8912-1439, Proydakova, Vera, Filippova, Arina, Masalov, Vladimir and Ralchenko, Victor 2025. Diamond deposition on non-diamond microparticles: Toward the development of core-shell optical materials. Surfaces and Interfaces 64 , 106479. 10.1016/j.surfin.2025.106479

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Abstract

A comparative study of the formation of diamond crystallites during chemical vapor deposition (CVD) process with the use of a variety of non-diamond particles is performed. The possibility of various particles to stimulate the diamond formation is surprisingly common, yet less reliable than standard seeding with diamond nanoparticles. Under diamond CVD growth conditions, EuF3, ZrO2:Sc:Eu, CeO2, LiF, and YAG:Ce particles showed the ability to become coated with spontaneously formed diamond layers (shells) without the need for diamond seeds. In some cases, the diamond formation is hindered by chemical reactions between initial particles with substrate and/or ions in the plasma. Among the compounds studied, LiF particles exhibited the densest arrangement of diamond grains, resulting in the formation of a continuous polycrystalline diamond film. In cases of luminescent particles, such as EuF3, ZrO2:Sc:Eu and YAG:Ce, their luminescence is mostly preserved after CVD and can be registered in the spectra of the grown diamond crystallites. The reported effect may be used for the fabrication of the wide variety of the functional particles with CVD-grown diamond shell, that can be used for a broad range of applications in photonics and biomedicine.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	Elsevier
ISSN:	2468-0230
Date of Acceptance:	13 April 2025
Last Modified:	08 May 2025 08:45
URI:	https://orca.cardiff.ac.uk/id/eprint/177902

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