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

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Article number012003
JournalJournal of Physics: Conference Series
Volume985
Issue number1
DOIs
StatePublished - 19 Mar 2018
Event3rd International Symposium on Frontier of Applied Physics, ISFAP 2017 - Jakarta, Indonesia
Duration: 23 Oct 201724 Oct 2017

Fingerprint

Dive into the research topics of 'Tuning sputtered gold thickness to enhance absorption and emission in core-shell type erbium doped upconversion nanoparticles'. Together they form a unique fingerprint.

Cite this