Photoluminescence coupled to electric and magnetic surface lattice resonance in periodic arrays of zirconia nanoparticles

Higashino, Makoto; Murai, Shinji; Lo, TienYang; Tomita, Shuhei; Tanaka, Katsuhisa

doi:10.1039/d2tc01119k

Cited by 7 publications

(3 citation statements)

References 43 publications

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“…We also observed the out-coupling enhancement by the nanoparticle array along the (−1, 0) SLR mode that appears as a sharp and dispersive line starting from λ = 650 nm at θ = 10°and red-shifts as θ increases. The emission out-coupling by SLR 40,41 and the separated evaluation of in-and out-coupling had been discussed in previous publications. 51 A horizontal band of "emission" was also detected at 580 nm, which is the exact wavelength of the incident beam and the excited SLR.…”

Section: ■ Resultsmentioning

confidence: 99%

“…Previous works have shown that SLR is capable of significantly enhancing the light–matter interaction of fluorescent dye molecules and can enhance both the in-coupling efficiency and the directional out-coupling of the fluorescent emission. − The enhancement in the in-coupling efficiency is due to the confinement of the EM field in the vicinity of the nanoparticle array, and hence, the localized and enhanced field strength would induce a stronger absorption by the fluorescent molecules. ,− On the other hand, the angle-dependent fluorescence enhancement is enabled by first enhancing the emission rate of the fluorescent molecules through the increased local density of state near the nanoparticle array, also known as the Purcell effect, and then, the enhanced emission is radiatively out-coupled to specific angles through diffraction with the nanoparticle array. − …”

Section: Introductionmentioning

confidence: 99%

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Resonant Critical Coupling of Surface Lattice Resonances with a Fluorescent Absorptive Thin Film

Tse,

Murai,

Tanaka

2023

J. Phys. Chem. C

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Surface lattice resonance supported on nanoparticle arrays is a promising candidate for enhancing fluorescent effects in both absorption and emission. The optical enhancement provided by surface lattice resonance is primarily through light confinement beyond the diffraction limit, where the nanoparticle arrays can enhance light–matter interaction for increased absorption as well as provide more local density of states for enhanced spontaneous emission. In this work, we optimize the in-coupling efficiency of the fluorescent molecules by finding the conditions to maximize the absorption, also known as the critical coupling condition. We studied the transmission characteristics and the fluorescent emission of a TiO2 nanoparticle array embedded in an index-matching layer with a fluorescent dye at various concentrations. A modified coupled-mode theory that describes the nanoparticle array was then derived and verified by numerical simulations. With the analytical model, we analyzed the experimental measurements and discovered the condition to critically couple light into the fluorescent dye, which is demonstrated as the strongest emission. This study presents a useful guide for designing efficient energy transfer from the excitation beam to the emitters, which maximizes the external conversion efficiency.

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Section: ■ Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resonant Critical Coupling of Surface Lattice Resonances with a Fluorescent Absorptive Thin Film

Tse,

Murai,

Tanaka

2023

J. Phys. Chem. C

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“…[4] [5] Many dielectrics such as Si and TiO 2 are also absorptive in the UV due to their direct bandgap smaller than the UV energy. [6] The transparent and high refractive index material, such ZrO 2 [7] and HfO 2 [8] is required in the UV region.…”

Section: Introductionmentioning

confidence: 99%

Dielectric lattices working in ultraviolet region

Murai,

Tomita,

Tanaka

2023

UV and Higher Energy Photonics: From Materials to Applications 2023

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We made a HfO 2 nanoantenna from HfO 2 thin films by using a combination of nanoimprint lithography and reactive ion etching. The nanoantenna comprising hexagonal lattice of HfO 2 nanodisks sustains electric and magnetic surface lattice resonances (SLRs) in the UV region, originating from radiative coupling between the local electric and magnetic dipoles via in-plane diffraction or Rayleigh anomaly. We also crystallized the HfO 2 nanoantenna by annealing. In spite of the crystallization, the refractive index did not change notably and thus the spectral shape of the SLR changed only slightly.

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Plasmon-enhanced downshifting and downconversion: Fundamentals and applications in photovoltaics

Joshi,

Rasskazov

2024

Reviews in Physics

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Photoluminescence coupled to electric and magnetic surface lattice resonance in periodic arrays of zirconia nanoparticles

Abstract: Zirconia is transparent from near-ultraviolet through the entire visible region, and here we utilize the periodic arrays of zirconia nanoparticle to excite electric and magnetic SLRs in the visible.

Cited by 7 publications

References 43 publications

Resonant Critical Coupling of Surface Lattice Resonances with a Fluorescent Absorptive Thin Film

Resonant Critical Coupling of Surface Lattice Resonances with a Fluorescent Absorptive Thin Film

Dielectric lattices working in ultraviolet region

Plasmon-enhanced downshifting and downconversion: Fundamentals and applications in photovoltaics

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