Plasmonic Enhancement of Nanophosphor Upconversion Luminescence in Au Nanohole Arrays

被引：200

作者：

Saboktakin, Marjan ^{[1
]}

Ye, Xingchen ^{[2
]}

Chettiar, Uday K. ^{[1
]}

Engheta, Nader ^{[1
,3
,4
]}

Murray, Christopher B. ^{[2
,4
]}

Kagan, Cherie R. ^{[1
,2
,4
]}

机构：

[1] Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

[3] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[4] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

来源：

ACS NANO | 2013年 / 7卷 / 08期

关键词：

upconversion; nanophosphor; nanohole array; plasmonically enhanced luminescence; lanthanide; squeegee method; FLUORESCENCE ENHANCEMENT; OPTICAL-TRANSMISSION; METAL-FILMS; NANOPARTICLES; NANOCRYSTALS; NAYF4-YB; ER; LIGHT;

D O I：

10.1021/nn402598e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Arrays of subwavelength holes (nanoholes) in Au films were,computationally designed, fabricated, and used as templates to localize and enhance the luminescence of upconversion nanophosphors (UCNPs)-hexagonal phase NaYF4 doped with Yb3+ and Er3+. The dimensions of nanohole Au arrays were designed to accept only a single UCNP upon particle filling and with a periodicity to be resonant with the excitation wavelength of the upconversion: Frequency-dependent luminescence enhancements of up to 35-fold and a concomitant shortening of the UCNP luminescence rise time were observed, consistent with simulations of plasmonic enhancement of the UCNP absorption.

引用

页码：7186 / 7192

页数：7

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