Formation regularities of plasmonic silver nanostructures on porous silicon for effective surface-enhanced Raman scattering

Bandarenka, Hanna V. ORCID: https://orcid.org/0000-0003-4254-8261, Girel, Kseniya V., Bondarenko, Vitaly P., Khodasevich, Inna A., Panarin, Andrei Yu. and Terekhov, Sergei N. 2016. Formation regularities of plasmonic silver nanostructures on porous silicon for effective surface-enhanced Raman scattering. Nanoscale Research Letters 11 (1) , 262. 10.1186/s11671-016-1473-y

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Abstract

Plasmonic nanostructures demonstrating an activity in the surface-enhanced Raman scattering (SERS) spectroscopy have been fabricated by an immersion deposition of silver nanoparticles from silver salt solution on mesoporous silicon (meso-PS). The SERS signal intensity has been found to follow the periodical repacking of the silver nanoparticles, which grow according to the Volmer–Weber mechanism. The ratio of silver salt concentration and immersion time substantially manages the SERS intensity. It has been established that optimal conditions of nanostructured silver layers formation for a maximal Raman enhancement can be chosen taking into account a special parameter called effective time: a product of the silver salt concentration on the immersion deposition time. The detection limit for porphyrin molecules CuTMPyP4 adsorbed on the silvered PS has been evaluated as 10−11 M.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	SpringerOpen
ISSN:	1931-7573
Date of First Compliant Deposit:	31 July 2026
Date of Acceptance:	9 May 2016
Last Modified:	07 Sep 2026 21:55
URI:	https://orca.cardiff.ac.uk/id/eprint/188569

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