Up-conversion multiwave (White) luminescence in the visible spectral range under excitation by IR laser diodes in the active BaY2F8:Yb3+,Pr3+ medium

“…The CR process is one of the reasons for the concentration quenching mechanism, which is intentionally used for tuning the output color UC and also to construct a photon avalanche process. [35][36][37] E. Photon avalanche Photon avalanche is the most complex among all UC processes. It is illustrated in Fig.…”

Section: Cross Relaxationmentioning

confidence: 99%

“…So, fluoride host materials, mainly alkaline rare earth tetrafluoride (AREF 4 ), are the most popular hosts for UC emission. [33][34][35][36][37][38] Ledoux et al 38 have recently given quite a complete overview of fluoride host characteristics and advantages for efficient UC luminescence.…”

Section: Fluoride Based Hostmentioning

confidence: 99%

Future prospects of fluoride based upconversion nanoparticles for emerging applications in biomedical and energy harvesting

Tiwari

Maurya

Yadav

et al. 2018

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Rare earth doped/codoped phosphors have been extensively studied for different types of applications based on their intense luminescence features. For this, researchers have tried to choose the inorganic host matrices having both a low phonon cut-off frequency and a high refractive index. Many articles have been published on oxide based phosphor materials, but due to their high cut-off phonon frequency, use of these materials is restricted for optical based applications. This is why additional research has been carried out on fluoride based host materials because of their low phonon frequencies, low composition degradation, and high quantum efficiency. In this paper, the authors review the rare earth fluoride based host nano-and micromaterials for different applications and discuss possible mechanisms.

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“…Beyond simple RET, interactions between multiple excitons can result in the creation of a single, high-energy excitation. Such upconversions are referred to as Energy Transfer Upconversion (ETU) 3 if the intensified exciton is created on one of the original sites and Energy Pooling (EP) if it emerges on a third nanostructure [4][5][6][7] . These processes, for instance, allow the infrared spectrum to be drawn upon to carry out higher energy tasks in photovoltaics [8][9][10] , biofuel production 11 and medical applications [12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Electric dipole coupling in optical cavities and its implications for energy transfer, up-conversion, and pooling

LaCount

Lusk

2016

Phys. Rev. A

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Resonant energy transfer, energy transfer upconversion, and energy pooling are considered within optical cavities to elucidate the relationship between exciton dynamics and donor/acceptor separation distance. This is accomplished using perturbation theory to derive analytic expressions for the electric dipole coupling tensors of perfect planar and rectangular channel reflectors-directly related to a number of important energy transfer processes. In the near field, the separation dependence along the cavity axis is not influenced by the cavity and is essentially the same as for three-dimensional, free space. This is in sharp contrast to the reduced sensitivity to separation found in idealized low-dimensional settings. The cavity dynamics only correspond to their reduced dimensional counterparts in the far field where such excitonic processes are not typically of interest. There is an intermediate regime, though, where sufficiently small cavities cause a substantial decrease in separation sensitivity that results in one component of the dipole-dipole coupling tensor being much larger than those of free space.1 arXiv:1602.09048v3 [quant-ph]

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Up-conversion multiwave (White) luminescence in the visible spectral range under excitation by IR laser diodes in the active BaY2F8:Yb3+,Pr3+ medium

Cited by 13 publications

References 6 publications

Upconversion Nanoparticles: Design, Nanochemistry, and Applications in Theranostics

Upconversion Nanoparticles: Design, Nanochemistry, and Applications in Theranostics

Future prospects of fluoride based upconversion nanoparticles for emerging applications in biomedical and energy harvesting

Electric dipole coupling in optical cavities and its implications for energy transfer, up-conversion, and pooling

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