Photoluminescence enhancement of quantum dots on Ag nanoneedles

被引：23

作者：

Ahmed, Syed Rahin ^{[1
,3
]}

Cha, Hee Ryoung ^{[1
]}

Park, Jung Youn ^{[2
]}

Park, Enoch Y. ^{[3
]}

Lee, Dongyun ^{[1
]}

Lee, Jaebeom ^{[1
]}

机构：

[1] Pusan Natl Univ, Coll Nanosci & Nanotechnol, Dept Nano Fus Technol, Miryang 627706, South Korea

[2] Natl Fisheries Res & Dev Inst, Pusan 619705, South Korea

[3] Shizuoka Univ, Grad Sch Sci & Technol, Suruga Ku, Shizuoka 4228529, Japan

来源：

NANOSCALE RESEARCH LETTERS | 2012年 / 7卷

基金：

新加坡国家研究基金会;

关键词：

Ag nanoneedle film; Nanostructure; Fluorescence; Quantum dots; Plasmon-induced enhancement; Surface roughness; CDTE NANOWIRES; PLASMON; FLUORESCENCE; NANOPARTICLES; ARRAYS;

D O I：

10.1186/1556-276X-7-438

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Noble metal nanostructure allows us to tune optical and electrical properties, which has high utility for real-world application. We studied surface plasmon-induced emission of semiconductor quantum dots (QDs) on engineered metallic nanostructures. Highly passive organic ZnS-capped CdSe QDs were spin-coated on poly-(methyl methacrylate)-covered Ag films, which brought QDs near the metallic surface. We obtained the enhanced electromagnetic field and reduced fluorescence lifetimes from CdSe/ZnS QDs due to the strong coupling of emitter wave function with the Ag plasmon resonance. Observed changes include a six-fold increase in the fluorescence intensity and striking reduction in fluorescence lifetimes of CdSe/ZnS QDs on rough Ag nanoneedle compared to the case of smooth surfaces. The advantages of using those nanocomposites are expected for high-efficiency light-emitting diodes, platform fabrication of biological and environmental monitoring, and high-contrast imaging.

引用

页数：7

共 27 条

[1] Exciton-Plasmon Interactions in Metal-Semiconductor Nanostructures [J].

Achermann, Marc .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (19) :2837-2843

[2] High-Throughput Nanofabrication of Infrared Plasmonic Nanoantenna Arrays for Vibrational Nanospectroscopy [J].

Aksu, Serap ;

Yanik, Ahmet A. ;

Adato, Ronen ;

Artar, Alp ;

Huang, Min ;

Altug, Hatice .

NANO LETTERS, 2010, 10 (07) :2511-2518

[3] Light-emitting devices - Turning the tables on surface plasmons [J].

Barnes, WL .

NATURE MATERIALS, 2004, 3 (09) :588-589

[4] Concave Plasmonic Particles: Broad-Band Geometrical Tunability in the Near-Infrared [J].

Berkovitch, Nikolai ;

Ginzburg, Pavel ;

Orenstein, Meir .

NANO LETTERS, 2010, 10 (04) :1405-1408

[5]

Bujak L, 2009, ACTA PHYS POL A, V116, pS22

[6] Synthesis and characterization of truncated triangular silver nanoplates [J].

Chen, SH ;

Carroll, DL .

NANO LETTERS, 2002, 2 (09) :1003-1007

[7]

Drexhage K., 1974, Progress in Optics, V12, P163

[8] Surface Plasmon Mediated Strong Exciton-Photon Coupling in Semiconductor Nanocrystals [J].

Gomez, D. E. ;

Vernon, K. C. ;

Mulvaney, P. ;

Davis, T. J. .

NANO LETTERS, 2010, 10 (01) :274-278

[9] Exciton-plasmon interaction and hybrid excitons in semiconductor-metal nanoparticle assemblies [J].

Govorov, Alexander O. ;

Bryant, Garnett W. ;

Zhang, Wei ;

Skeini, Timur ;

Lee, Jaebeom ;

Kotov, Nicholas A. ;

Slocik, Joseph M. ;

Naik, Rajesh R. .

NANO LETTERS, 2006, 6 (05) :984-994

[10] Surface-plasmon-coupled emission of quantum dots [J].

Gryczynski, I ;

Malicka, J ;

Jiang, W ;

Fischer, H ;

Chan, WCW ;

Gryczynski, Z ;

Grudzinski, W ;

Lakowicz, JR .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (03) :1088-1093

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