Surface-plasmon-assisted modal gain enhancement in Au-hybrid CdSe/ZnS nanocrystal quantum dots

被引：14

作者：

Kim, Jihoon ^{[1
]}

Lee, Jaebeom ^{[2
]}

Kyhm, Kwangseuk ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Phys Educ & Phys, RCDAMP, Pusan 609735, South Korea

[2] Pusan Natl Univ, Coll Nanosci & Technol, Miryang 627706, South Korea

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 21期

关键词：

biexcitons; cadmium compounds; gold; II-VI semiconductors; nanostructured materials; photoluminescence; semiconductor quantum dots; surface plasmons; wide band gap semiconductors; zinc compounds; OPTICAL GAIN;

D O I：

10.1063/1.3664114

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Surface-plasmon-assisted modal gain enhancement was investigated in Au-hybrid CdSe/ZnS nanocrystal quantum dots. A fivefold enhancement of the modal gain was observed at room temperature in the presence of a Au film by using modal gain contour map analysis, and the photoluminescence intensity and size-selective photoluminescence excitation intensity increased significantly. The enhanced modal gain was attributed to the multiexciton states of neutral and charged biexciton and triexciton. (C) 2011 American Institute of Physics. [doi:10.1063/1.3664114]

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页数：3

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