Demonstrating Photoluminescence from Au is Electronic Inelastic Light Scattering of a Plasmonic Metal: The Origin of SERS Backgrounds

被引：210

作者：

Hugall, James T. ^{[1
]}

Baumberg, Jeremy J. ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, NanoPhoton Ctr, Cambridge CB3 OHE, England

来源：

NANO LETTERS | 2015年 / 15卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

SERS background; inelastic scattering; electronic SERS plasmonics; metal photoluminescence; ENHANCED RAMAN-SCATTERING; SELF-ASSEMBLED MONOLAYERS; GOLD; EMISSION; NANOPARTICLES; SPECTROSCOPY; SILVER; NANOSTRUCTURES; LUMINESCENCE; EXCITATION;

D O I：

10.1021/acs.nanolett.5b00146

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Temperature-dependent surface-enhanced Raman scattering (SERS) is used to investigate the photoluminescence and background continuum always present in SERS but whose origin remains controversial. Both the Stokes and anti-Stokes background is found to be dominated by inelastic light scattering (ILS) from the electrons in the noble metal nanostructures supporting the plasmon modes. The anti-Stokes background is highly temperature dependent and is shown to be related to the thermal occupation of electronic states within the metal via a simple model. This suggests new routes to enhance SERS sensitivities, as well as providing ubiquitous and calibrated real-time temperature measurements of nanostructures.

引用

页码：2600 / 2604

页数：5

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