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

Mingrui Shao; Di Liu; Jinxuan Lu; Xiaofei Zhao; Jing Yu; Chao Zhang; Baoyuan Man; Hui Pan; Zhen Li

doi:10.1039/D3NH00053B

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

Mingrui Shao,

^a Di Liu,^b Jinxuan Lu,^a Xiaofei Zhao,^a Jing Yu,

^a Chao Zhang,^a Baoyuan Man,*^a Hui Pan

*^bc and Zhen Li

*^a

Author affiliations

* Corresponding authors

^a School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
E-mail: byman@sdnu.edu.cn, lizhen19910528@163.com

^b Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, P. R. China
E-mail: huipan@um.edu.mo

^c Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR, P. R. China

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.

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DOI: https://doi.org/10.1039/D3NH00053B
Article type: Communication
Submitted: 15 Feb 2023
Accepted: 16 May 2023
First published: 17 May 2023

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Nanoscale Horiz., 2023,8, 948-957

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

Abstract

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

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