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Surface zeta potential and diamond seeding on gallium nitride films

Mandal, Soumen ORCID:, Thomas, Evan L. H., Middleton, Callum, Gines, Laia ORCID:, Griffiths, James T., Kappers, Menno J., Oliver, Rachel A., Wallis, David J. ORCID:, Goff, Lucy E., Lynch, Stephen A. ORCID:, Kuball, Martin and Williams, Oliver A. ORCID: 2017. Surface zeta potential and diamond seeding on gallium nitride films. ACS Omega 2 (10) , pp. 7275-7280. 10.1021/acsomega.7b01069

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Measurement of zeta potential of Ga-face and N-face gallium nitride has been carried out as function of pH. Both the faces show negative zeta potential in the pH range 5.5-9. The Ga face has an isoelectric point at pH 5.5. The N-face shows a more negative zeta potential due to larger concentration of adsorbed oxygen. Zeta potential data clearly showed that H-terminated diamond seed solution at pH 8 will be optimal for the self assembly of a monolayer of diamond nanoparticles on the GaN surface. Subsequent growth of thin diamond �lms on GaN seeded with H-terminated diamond seeds produced fully coalesced �lms con�rming a seeding density in excess of 1011 cm

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Additional Information: This is an open access article published under a Creative Commons Attribution (CC-BY)License, which permits unrestricted use, distribution and reproduction in any medium,provided the author and source are cited.
Publisher: American Chemical Society
ISSN: 2470-1343
Funders: EPSRC
Date of First Compliant Deposit: 9 October 2017
Date of Acceptance: 6 October 2017
Last Modified: 06 Jan 2024 02:36

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