Extraordinary Fluorescence Enhancement in Metal-Dielectric Core-Shell Nanoparticles

被引：0
|
作者：
Rasskazov, Ilia L. [1 ]
Moroz, Alexander [2 ]
Carney, P. Scott [1 ]
机构：
[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
[2] Wave Scattering, Berlin, Germany
来源：
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2021年 / 12卷 / 27期
关键词：
WHISPERING-GALLERY-MODE; EMISSION; MOLECULES; DISTANCE; MICROSPHERE; RESONANCES; DEPENDENCE;
D O I：
10.1021/acs.jpclett.1c01368
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We show that in metal-dielectric core-shell nanoparticles, unusually thick dielectric coatings can produce extreme fluorescence enhancement with an enhancement factor (F) over bar greater than or similar to 3000 for emitters located on the surface or in the interior of the shell of Au@dielectric spherical particles under realistic conditions, even for the emitters with 100% intrinsic quantum yield. Thick dielectric coatings facilitate high-quality transverse electric (TE) multipole (l = 7) resonances which are shown as the major cause for the reported extraordinary values of (F) over bar.
引用
收藏
页码：6425 / 6430
页数：6
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