Tuning sputtered gold thickness to enhance absorption and emission in core-shell type erbium doped upconversion nanoparticles

R. V. Manurung, C. T. Wu, S. Chattopadhyay

研究成果: Conference article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Upconversion nanoparticles (UCNPs) converts near-infrared excitation to visible emission with advantages e.g. photostable, non-blinking, and background-free probes for bioimaging and biosensor. However, low quantum yield and low efficiency (∼1%) as drawback need to be enhanced. A plasmonic gold nano-structured surface was designed and fabricated to couple with the 980 nm radiation and produce plasmonic enhancement of the upconversion luminescence. The synthesis of the UCNPs was done by thermal decomposition and SiO2 coating prepared by the reverse microemulsion process. Here, we report a novel tunable plasmon-enhanced fluorescence by modulating the thickness and surface roughness of gold island film on Si. The localized surface plasmon resonance (LSPR) at 980 nm was obtained, matched with the native excitation of UCNPs resulting in maximum enhancement of 10-fold of green emission band at 540 nm for the Er-doped UCNPs.

原文English
文章編號012003
期刊Journal of Physics: Conference Series
985
發行號1
DOIs
出版狀態Published - 19 3月 2018
事件3rd International Symposium on Frontier of Applied Physics, ISFAP 2017 - Jakarta, Indonesia
持續時間: 23 10月 201724 10月 2017

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