Issue 7, 2023

Giant enhancement of the initial SERS activity for plasmonic nanostructures via pyroelectric PMN-PT

Abstract

Herein, a simply-prepared and highly sensitive electric field-induced surface-enhanced Raman spectroscopy (E-SERS) substrate is proposed by combining a pyroelectric material (PMN-PT) with the plasmonic silver nanoparticles (Ag NP). The intensity of SERS signals is further enhanced by more than 100 times after the application of positive or negative pyroelectric potentials. Theoretical calculations and experimental characterizations demonstrate that the chemical mechanism (CM) as induced by the charge transfer (CT) is mainly responsible for enhanced E-SERS. In addition, a novel nanocavity structure with PMN-PT/Ag/Al2O3/silver nanocubes (Ag NCs) was also introduced, which could effectively convert light energy into heat energy and realize a tremendous enhancement of SERS signals. These findings are expected to further accelerate the application of plasmonic metal nanoparticle-based pyroelectric materials in the fields of energy conversion, optical-sensors and photocatalysts.

Graphical abstract: Giant enhancement of the initial SERS activity for plasmonic nanostructures via pyroelectric PMN-PT

Supplementary files

Article information

Article type
Communication
Submitted
15 feb 2023
Accepted
16 mai 2023
First published
17 mai 2023

Nanoscale Horiz., 2023,8, 948-957

Giant enhancement of the initial SERS activity for plasmonic nanostructures via pyroelectric PMN-PT

M. Shao, D. Liu, J. Lu, X. Zhao, J. Yu, C. Zhang, B. Man, H. Pan and Z. Li, Nanoscale Horiz., 2023, 8, 948 DOI: 10.1039/D3NH00053B

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