Upconversion fluorescence enhancement of NaYF4:Yb/Re nanoparticles by coupling with SiO2 opal photonic crystals

Shi, Yihao; Zhang, Fuqing; Xu, Jizheng; Kai, Zhou; Chen, Chen; Cheng, Jian; Li, Ping

doi:10.1007/s10853-019-03492-x

Cited by 17 publications

(9 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…20,21 Also, the host materials were varied to enhance energy transfer rates between lanthanide ions and reduce surface quenching which is the major quenching channel. 22,23 Other approaches focused on strategies to locally enhance the electromagnetic field energy, 24 using lensing, 25,26 plasmon resonances, 27−32 opal-like photonic crystals, 33,34 and photonic crystal slabs, 35−38 or combinations of these effects. 38,39 Some of these field enhancement strategies were limited to small areas because of challenging synthesis and manufacturing steps.…”

mentioning

confidence: 99%

“…To enhance the upconversion efficiency of UCNPs, several approaches have been studied. UCNP architecture was optimized using different shelling procedures and arrangements − and doping concentrations. , Also, the host materials were varied to enhance energy transfer rates between lanthanide ions and reduce surface quenching which is the major quenching channel. , Other approaches focused on strategies to locally enhance the electromagnetic field energy, using lensing, , plasmon resonances, − opal-like photonic crystals, , and photonic crystal slabs, − or combinations of these effects. , Some of these field enhancement strategies were limited to small areas because of challenging synthesis and manufacturing steps. Metasurfaces or photonic crystal slabs can be produced in large dimensions and with high throughput.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Metasurface Enhanced Sensitized Photon Upconversion: Toward Highly Efficient Low Power Upconversion Applications and Nanoscale E-Field Sensors

et al. 2020

View full text Add to dashboard Cite

Large-scale nanoimprinted metasurfaces based on silicon photonic crystal slabs were produced and coated with a NaYF4:Yb3+/Er3+ upconversion nanoparticle (UCNP) layer. UCNPs on these metasurfaces yield a more than 500-fold enhanced upconversion emission compared to UCNPs on planar surfaces. It is also demonstrated how the optical response of the UCNPs can be used to estimate the local field energy in the coating layer. Optical simulations using the finite element method validate the experimental results and the calculated spatial three-dimensional field energy distribution helps us to understand the emission enhancement mechanism of the UCNPs closely attached to the metasurface. In addition, we analyzed the spectral shifts of the resonances for uncoated and coated metasurfaces and metasurfaces submerged in water to enable a prediction of the optimum layer thicknesses for different excitation wavelengths, paving the way to applications such as electromagnetic field sensors or bioassays.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Metasurface Enhanced Sensitized Photon Upconversion: Toward Highly Efficient Low Power Upconversion Applications and Nanoscale E-Field Sensors

et al. 2020

View full text Add to dashboard Cite

show abstract

“…At 200 °C, only little Ln 3+ diffusion was observed by Liu et al who also demonstrated a dependency on the dopant concentration . Better understanding of the Ln 3+ diffusion properties could be exploited by adaption of the synthesis approach to optimize luminescence quantum yield , and to favor or to suppress ion diffusion to aim at particular ion distributions depending on the desired application. − …”

Section: Introductionmentioning

confidence: 99%

Tracking the Motion of Lanthanide Ions within Core–Shell–Shell NaYF₄ Nanocrystals via Resonance Energy Transfer

et al. 2020

View full text Add to dashboard Cite

Lanthanide resonance energy transfer (LRET) was used to investigate the motion of dopant ions during the synthesis of core−shell− shell nanocrystals (NCs) that are frequently used as frequency upconversion materials. Reaction conditions (temperature, solvent) as well as lattice composition and precursors were adapted from a typical hydrothermal synthesis approach used to obtain upconversion nanoparticles (UCNPs). Instead of adding the lanthanide ions Yb 3+ /Er 3+ as the sensitizer/activator couple, Eu 3+ /Nd 3+ as the donor/acceptor were added as the LRET pair to the outer shell (Eu 3+ ) and the core (Nd 3+ ). By tailoring the thickness of the insulation shell ("middle shell"), the expected distance between the donor and the acceptor was increased beyond 2 R 0 , a distance for which no LRET is expected. The successful synthesis of core− shell−shell NCs with different thicknesses of the insulation layer was demonstrated by high-resolution transmission electron microscopy measurement. The incorporation of the Eu 3+ ions into the NaYF 4 lattice was investigated by high-resolution time-resolved luminescence measurements. Two major Eu 3+ species (bulk and surface) were found. This was supported by steady-state as well as time-resolved luminescence data. Based on the luminescence decay kinetics, the intermixing of lanthanides during synthesis of core− shell UCNPs was evaluated. The energy transfer between Eu 3+ (donor) and Nd 3+ (acceptor) ions was exploited to quantify the motion of the dopant ions. This investigation reveals the migration of Ln 3+ ions between different compartments in core−shell NCs and affects the concept of using core−shell architectures to increase the efficiency of UCNPs. In order to obtain well-separated core and shell structures with different dopants, alternative concepts are needed.

show abstract

“…In order to obtain high up-conversion efficiency at low incident intensity, near fields can locally increase the incident power for lanthanide doped nanoparticles close to a metasurface [16,17]. This has been accomplished using metasurfaces consisting of 2D anodic aluminium oxide photonic crystals [18], SiO 2 opal photonic crystals [19], and nanopillar based photonic crystals [20].…”

Section: Introductionmentioning

confidence: 99%

Double-Layer Metasurface for Enhanced Photon Up-Conversion

Manley,

Segantini,

Ahiboz

et al. 2020

Preprint

View full text Add to dashboard Cite

We present a double-layer dielectric metasurface obtained by stacking a silicon nanodisc array and a silicon photonic crystal slab with equal periodicity on top of each other. We focus on the investigation of electric near-field enhancement effects occurring at resonant excitation of the metasurface and study its optical properties numerically and experimentally. We find that the major difference in multi-layer metasurfaces when compared to conventional single-layer structures appears to be in Rayleigh-Wood anomalies: they are split into multiple different modes which are themselves spectrally broadened. As a proof of concept we cover a double-layer metasurface with a lanthanide-doped up-conversion particle layer and study its interaction with a 1550 nm photoexcitation. We observe a 2.7-fold enhancemed up-conversion photoluminescence by using the stacked metasurface instead of a planar substrate, although only around 1% of the up-conversion material is exposed to enhanced near-fields. Two mechanisms are identified explaining this behavior: First, enhanced near-fields when exciting the metasurface resonantly, and second, light trapping by total internal reflection in the particle layer when the metasurface redirects light into high-angle diffraction orders. These results pave the way for low-threshold and, in particular, broadband photon up-conversion in future solar energy and biosensing applications.

show abstract

Upconversion fluorescence enhancement of NaYF4:Yb/Re nanoparticles by coupling with SiO2 opal photonic crystals

Cited by 17 publications

References 32 publications

Metasurface Enhanced Sensitized Photon Upconversion: Toward Highly Efficient Low Power Upconversion Applications and Nanoscale E-Field Sensors

Metasurface Enhanced Sensitized Photon Upconversion: Toward Highly Efficient Low Power Upconversion Applications and Nanoscale E-Field Sensors

Tracking the Motion of Lanthanide Ions within Core–Shell–Shell NaYF₄ Nanocrystals via Resonance Energy Transfer

Double-Layer Metasurface for Enhanced Photon Up-Conversion

Contact Info

Product

Resources

About

Upconversion fluorescence enhancement of NaYF4:Yb/Re nanoparticles by coupling with SiO2 opal photonic crystals

Cited by 17 publications

References 32 publications

Metasurface Enhanced Sensitized Photon Upconversion: Toward Highly Efficient Low Power Upconversion Applications and Nanoscale E-Field Sensors

Metasurface Enhanced Sensitized Photon Upconversion: Toward Highly Efficient Low Power Upconversion Applications and Nanoscale E-Field Sensors

Tracking the Motion of Lanthanide Ions within Core–Shell–Shell NaYF4 Nanocrystals via Resonance Energy Transfer

Double-Layer Metasurface for Enhanced Photon Up-Conversion

Contact Info

Product

Resources

About

Tracking the Motion of Lanthanide Ions within Core–Shell–Shell NaYF₄ Nanocrystals via Resonance Energy Transfer