Surface-plasmon-enhanced photoluminescence of CdS nanoparticles with Au/SiO₂ nanocomposites

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• 作者：Dae-Ryong Jung ; Jongmin Kim ; Changwoo Nahm ; Seunghoon Nam ; Jae Ik Kim ; Byungwoo Park ; ^{byungwoo@snu.ac.kr}
• 关键词：A. Nanostructures ; A. Semiconductors ; D. Luminescence
• 刊名：Materials Research Bulletin
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：47
• 期：2
• 页码：453-457
• 全文大小：1512 K

文摘

To examine the effect of metal nanostructures on the photoluminescence of CdS nanoparticles, Au/SiO₂ nanocomposites were prepared with back-reflection geometry. The contribution from the prolonged optical-path lengths was excluded, and the luminescence enhancement was attributed only to surface-plasmon resonance. The optimum nanostructures for the PL enhancement were examined, and correlated with the wavelength of the surface-plasmon peak of the Au/SiO₂ nanocomposites and the PL emission peak of CdS nanoparticles.