Microporous poly- and monocrystalline diamond films produced from chemical vapor deposited diamond-germanium composites

Sedov, Vadim Stanislavovich, Martyanov, Artem, Popovich, Alexey, Savin, Sergei, Sovyk, Dmitry, Tiazhelov, Ivan, Pasternak, Dmitrii, Mandal, Soumen ORCID: https://orcid.org/0000-0001-8912-1439 and Ralchenko, Victor Grigorevich 2023. Microporous poly- and monocrystalline diamond films produced from chemical vapor deposited diamond-germanium composites. Nanoscale Advances 5 , pp. 1307-1315. 10.1039/D2NA00688J

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Abstract

We report on a novel method for porous diamond fabrication, which is based on the synthesis of diamond-germanium composite films followed by etching of Ge component. The composites were grown by microwave plasma assisted CVD in CH4-H2-GeH4 mixtures on (100) silicon, microcrystalline- and single-crystal diamond substrates. The structure and the phase composition of the films before and after the etching were analyzed with scanning electron microscopy and Raman spectroscopy. The films revealed a bright emission of GeV color centers due to diamond doping with Ge, as evidenced by photoluminescence spectroscopy. The possible applications of the porous diamond films include thermal management, surfaces with superhydrophobic properties, chromatography, supercapacitors etc.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Additional Information:	The accepted manuscript is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Publisher:	Royal Society of Chemistry
ISSN:	2516-0230
Funders:	EPSRC
Date of First Compliant Deposit:	2 February 2023
Date of Acceptance:	23 January 2023
Last Modified:	03 May 2023 14:40
URI:	https://orca.cardiff.ac.uk/id/eprint/156442

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