Highly crystalline ZnO film decorated with gold nanospheres for PIERS chemical sensing | Zendy

Grégory Barbillon | Zendy; Thomas Noblet | Zendy; Christophe Humbert | Zendy

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Highly crystalline ZnO film decorated with gold nanospheres for PIERS chemical sensing

Author(s) -

Grégory Barbillon,

Thomas Noblet,

Christophe Humbert

Publication year - 2020

Publication title -

physical chemistry chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.053

H-Index - 239

eISSN - 1463-9084

pISSN - 1463-9076

DOI - 10.1039/d0cp03902k

Subject(s) - substrate (aquarium) , raman spectroscopy , materials science , colloidal gold , thin film , nanotechnology , nanoparticle , molecule , optoelectronics , surface enhanced raman spectroscopy , chemical engineering , photochemistry , raman scattering , chemistry , optics , organic chemistry , physics , engineering , geology , oceanography

In this paper, we report on the study of a novel type of substrate based on a highly crystalline ZnO film photo-irradiated using UV for enhancing the Raman signal. This effect is called photo-induced enhanced Raman spectroscopy (PIERS). This PIERS substrate is composed of a photo-irradiated thin ZnO film on which gold nanoparticles are deposited and allows large photo-induced SERS enhancement to be obtained for the chemical detection of small molecules compared to normal SERS signals. This photo-induced SERS enhancement is due to increasing electron density of the gold nanoparticles and charge transfer mechanisms. Here, we achieve a high quality PIERS substrate, the signal of which exhibits weaker fluctuations and a similar or greater gain (up to 7.52) than those reported in the current literature. Henceforth, these PIERS substrates can be of great potential for industrial applications.

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