Precise control of photoluminescence enhancement and quenching of semiconductor quantum dots using localized surface plasmons in metal nanoparticles

被引：20

作者：

Kim, DaeGwi ^{[1
]}

Yokota, Hiroki ^{[1
]}

Taniguchi, Taichi ^{[1
]}

Nakayama, Masaaki ^{[1
]}

机构：

[1] Osaka City Univ, Grad Sch Engn, Dept Appl Phys, Osaka 5588585, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 15期

关键词：

GOLD NANOPARTICLES; ENERGY-TRANSFER; SOLAR-CELLS; LUMINESCENCE; FLUORESCENCE; NANOCRYSTALLITES; METAMATERIALS; DEPENDENCE; EMISSION;

D O I：

10.1063/1.4826188

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photoluminescence (PL) enhancement and quenching using localized surface plasmons in metal nanoparticles (NPs) are important factors to control optical properties of semiconductor quantum dots (QDs). However, the PL enhancement and quenching have not been simultaneously observed in previous works, which lead to the situation that the mechanisms for controlling the enhancement and quenching are still controversial. In this work, we have investigated the PL properties in bilayer structures consisting of Au NPs and CdSe QDs in order to realize the precise control of the PL enhancement and quenching of the QDs. It was demonstrated that both the separation distance between Au NPs and CdSe QDs and the surface density of Au NPs in the bilayer structure are key factors for controlling the balance between the PL enhancement and quenching. The experimental results were quantitatively analyzed, taking account of the energy transfer from CdSe QDs to Au NPs and local electric field effects due to Au NPs. (C) 2013 AIP Publishing LLC.

引用

页数：5

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