In:
Advanced Optical Materials, Wiley, Vol. 11, No. 19 ( 2023-10)
Abstract:
This paper reports on the light amplification of NaGdF 4 :Yb,Er,Ce@NaGdF 4 :Yb,Nd@NaGdF 4 core–shell–shell downconversion nanoparticles (CSS‐DCNPs) in the near‐infrared second biological window (NIR‐II: 1000–1700 nm) by plasmonic nanostructures. Through a precisely controlled plasmonic metallic nanostructure, fluorescence from Yb 3+ induced 1000 nm emission, Nd 3+ induced 1060 nm emission, and Er 3+ induced 1527 nm emission are enhanced 1.6‐fold, 1.7‐fold, and 2.2‐fold, respectively, under an 808 nm laser excitation for the CSS‐DCNPs coupled with a gold hole‐cap nanoarray (Au‐HCNA), while the Er 3+ induced 1527 nm emission under a 980 nm laser excitation is enhanced up to 6‐fold. To gain insight into the enhancement mechanism, the plasmonic modulation of Er 3+ induced NIR‐II emission at 1550 nm under 980 nm excitation is studied by FDTD simulation and lifetime measurements, showing the observed fluorescence enhancement can be attributed to a combination of enhanced excitation and an increased radiative decay rate.
Type of Medium:
Online Resource
ISSN:
2195-1071
,
2195-1071
DOI:
10.1002/adom.202300477
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2708158-8
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