https://scholars.lib.ntu.edu.tw/handle/123456789/396506
標題: | Localized surface plasmon-enhanced photoluminescence of amorphous silicon quantum dots through plasmonic subwavelength crossed metallic gratings | 作者: | Tsai, T.-H. Lin, M.-Y. Hsiao, L.-J. HOANG-YAN LIN WING-KIT CHOI |
公開日期: | 2016 | 卷: | 55 | 期: | 4 | 來源出版物: | Japanese Journal of Applied Physics | 摘要: | We investigate experimentally the enhancing effect of plasmonic subwavelength crossed Ag gratings on photoluminescence (PL) from the amorphous silicon quantum dots (a-Si QDs) embedded in a central silicon-rich SiOx film of the Ag/SiOx:a-Si QDs/Ag sandwich nanostructures. The use of the crossed Ag grating structure as the top layer in the sandwich nanostructures results in a 2-fold increase in the PL peak intensity and a 1.34-fold increase in the integrated emission intensity compared with the use of a one-dimensional (1D) Ag grating top layer, and a 1.53-fold peak intensity increase compared with that of a SiOx:a-Si QDs/Ag structure without a Ag top layer. These significant PL enhancements can be attributed to the high light-extraction efficiency of the polarization-independent crossed metallic grating structure, the strong out-coupling of localized surface plasmons (LSPs), and the strong a-Si QD-LSP coupling. © 2016 The Japan Society of Applied Physics. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84963701887&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/396506 |
ISSN: | 00214922 | DOI: | 10.7567/JJAP.55.04EH15 | SDG/關鍵字: | Amorphous films; Diffraction gratings; Nanocrystals; Nanostructures; Photoluminescence; Plasmons; Semiconductor quantum dots; Silicon; Silicon oxides; Silver; Surface plasmon resonance; Enhancing effect; Grating structures; Integrated emissions; Localized surface plasmon; Metallic gratings; Polarization independent; Silicon quantum dots; Sub-wavelength; Amorphous silicon |
顯示於: | 光電工程學研究所 |
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