週期性結構表面電漿對於量子點發光增益之研究

Investigation of the enhanced emission of QDs due to the surface plasmon of periodic structures

劉豐慶(Feng-Ching Liu)

指導教授 ： 陳永芳

國立臺灣大學/理學院/物理研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.10957

摘要

由於金屬表面的週期性結構照光後產生的表面電漿具有特殊的電場分布與
光學性質，並且該結構可以縮小到奈米尺度，因此在奈米光子學理有良好的前瞻
性與應用價值。此篇論文將討論金屬介電質奈米複合光柵結構對於量子點的發光
增益影響，在變入射角的光柵內部電場強度模擬中可以發現此結構具有法布里-
珀羅共振性質，透過調整光柵週期、共振腔長度，以及不同的金屬材料，我們可
以操控共振波長與表面電漿的性質，來達到更好的增益效果。

關鍵字

光柵 ； 表面電漿 ； 法布里-珀羅共振 ； 量子點

並列摘要

The periodic structure on metal surface has the nature that under illumination, it
will cause surface plasmon propagate among the structure. Surface plasmon bears a
unique electric field distribution and photonic properties, when the structure is
reduced to nanoscale. In this thesis, we will investigate the enhancement due to a
hybrid nanostructure consisting of dielectric-embedded metallic grating. It is found
that this novel structure possesses Fabry-Pe rot resonance property through a
simulation of electric field strength with varying incident angle. By adjusting the
grating period, resonance cavity length and different metals, it is possible to control
the resonance wavelength and the properties of surface plasmon to obtain a better
enhancement of the light emission arising from semiconductor quantum dots.

並列關鍵字

grating ； surface plasmon ； Fabry-Perot resonance ； quantum dots

參考文獻

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[3] Dmitri K. Gramotnev and Sergey I. Bozhevolnyi. Plasmonics beyond the