Photoluminescence of Gold Nanorods: Purcell Effect Enhanced Emission from Hot Carriers

被引：131

作者：

Cai, Yi-Yu ^{[1
,5
]}

Liu, Jun G. ^{[2
,5
]}

Tauzin, Lawrence J. ^{[1
,5
]}

Huang, Da ^{[1
,5
]}

Sung, Eric ^{[1
,5
,6
]}

Zhang, Hui ^{[2
,5
]}

Joplin, Anneli ^{[1
,5
]}

Chang, Wei-Shun ^{[1
,5
]}

Nordlander, Peter ^{[2
,3
,4
,5
]}

Link, Stephan ^{[1
,3
,5
]}

机构：

[1] Rice Univ, Dept Chem, 6100 Main St, Houston, TX 77005 USA

[2] Rice Univ, Dept Phys & Astron, 6100 Main St, Houston, TX 77005 USA

[3] Rice Univ, Dept Elect & Comp Engn, 6100 Main St, Houston, TX 77005 USA

[4] Rice Univ, Dept Mat Sci & NanoEngn, 6100 Main St, Houston, TX 77005 USA

[5] Rice Univ, Lab Nanophoton, 6100 Main St, Houston, TX 77005 USA

[6] MIT, Dept Chem, 77 Massachusetts Ave, Cambridge, MA 02141 USA

来源：

ACS NANO | 2018年 / 12卷 / 02期

基金：

美国国家科学基金会;

关键词：

one-photon photoluminescence; surface plasmon resonance; interband transition; intraband transition; quantum yield; single-particle spectroscopy; gold nanoparticle; TIME-RESOLVED PHOTOEMISSION; INTERBAND ABSORPTION-EDGE; METAL NANOSTRUCTURES; LOCAL-DENSITY; QUANTUM YIELD; PLASMONIC NANOPARTICLES; ULTRAFAST DYNAMICS; ELECTRON DYNAMICS; LASER EXCITATION; NOBLE-METALS;

D O I：

10.1021/acsnano.7b07402

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate, experimentally and theoretically, that the photon emission from gold nanorods can be viewed as a Purcell effect enhanced radiative recombination of hot carriers. By correlating the single particle photoluminescence spectra and quantum yields of gold nanorods measured for five different excitation wavelengths and varied excitation powers, we illustrate the effects of hot carrier distributions evolving through interband and intraband transitions and the photonic density of states on the nanorod photoluminescence. Our model, using only one fixed input parameter, describes quantitatively both emission from interband recombination and the main photoluminescence peak coinciding with the longitudinal surface plasmon resonance.

引用

页码：976 / 985

页数：19

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