Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography

被引：24

作者：

Mochizuki, Yugo ^{[1
]}

Fujii, Minoru ^{[1
]}

Hayashi, Shinji ^{[1
]}

Tsuruoka, Takaaki ^{[2
]}

Akamatsu, Kensuke ^{[2
]}

机构：

[1] Kobe Univ, Grad Sch Engn, Dept Elect & Elect Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

[2] Konan Univ, Chuo Ku, Kobe, Hyogo 6500047, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 106卷 / 01期

关键词：

elemental semiconductors; gold; nanolithography; nanostructured materials; photoluminescence; silicon; silicon compounds; silver; thin films; QUANTUM-DOT LUMINESCENCE; SI NANOCRYSTALS; POROUS SILICON; OPTICAL-PROPERTIES; EFFICIENCY; EMISSION;

D O I：

10.1063/1.3159030

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of metal nanostructures prepared by nanosphere lithography on photoluminescence (PL) properties of silicon nanocrystals (Si-ncs) is studied. By placing Ag nanotriangles or Au nanovoids on SiO(2) films containing Si-ncs, the PL intensity is enhanced. For the sample having Ag nanotriangles, the largest PL enhancement is obtained when the excitation wavelength coincides with the absorption band of Ag nanotriangles. This suggests that the enhancement of the incident field by surface plasmon polariton (SPP) excitation is responsible for the PL enhancement. On the other hand, for the sample having Au nanovoids, the PL enhancement is mainly made by the enhancement of effective radiative decay rate of Si-ncs by efficient excitation and scattering of SPPs.

引用

页数：5

共 27 条

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