Red–green–blue upconversion luminescence and energy transfer in Yb3+/Er3+/Tm3+ doped YP5O14 ultraphosphates

Hassairi, M.; Dammak, M.; Zambón, Daniel; Chadeyron, G.; Mahiou, Rachid

doi:10.1016/j.jlumin.2016.09.054

Cited by 31 publications

(8 citation statements)

References 38 publications

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“…Rare-earth-activated systems have been demonstrated to be the pillar of photonic technologies enabling a broad spectrum of crucial applications in strategic social and economic priorities [1][2][3][4][5]. Systems based on rare-earth-doped upconverters are largely employed in bioimaging, drug delivery, laser, lighting, photon management, environmental sensing, and nanothermometry [6][7][8][9][10][11][12][13][14][15]. Upconversion (UC) mechanism is a process of energy transfer from a sensitizer in a proper host matrix, which is excited under lowenergy radiation (usually near infrared, NIR), to an emitter that emits higher energy photons than the excitation ones.…”

Section: Introductionmentioning

confidence: 99%

Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions

Halubek-Gluchowska

Szymański

Tran³

et al. 2021

Materials

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Looking for upconverting biocompatible nanoparticles, we have prepared by the sol–gel method, silica–calcia glass nanopowders doped with different concentration of Tm3+ and Yb3+ ions (Tm3+ from 0.15 mol% up to 0.5 mol% and Yb3+ from 1 mol% up to 4 mol%) and characterized their structure, morphology, and optical properties. X-ray diffraction patterns indicated an amorphous phase of the silica-based glass with partial crystallization of samples with a higher content of lanthanides ions. Transmission electron microscopy images showed that the average size of particles decreased with increasing lanthanides content. The upconversion (UC) emission spectra and fluorescence lifetimes were registered under near infrared excitation (980 nm) at room temperature to study the energy transfer between Yb3+ and Tm3+ at various active ions concentrations. Characteristic emission bands of Tm3+ ions in the range of 350 nm to 850 nm were observed. To understand the mechanism of Yb3+–Tm3+ UC energy transfer in the SiO2–CaO powders, the kinetics of luminescence decays were studied.

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Section: Introductionmentioning

confidence: 99%

Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions

Halubek-Gluchowska

Szymański

Tran³

et al. 2021

Materials

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“…Furthermore, the intensities of both the green and red emissions decreased progressively with increasing Tm 3+ as a result of decreases in the population of the Er 3+ 2 H 11/2 , 4 S 3/2 , and 4 F 9/2 states, either by transfer of energy to Tm 3+ or by increasing nonradiative relaxation between the Tm 3+ 1 G 4 and 2 F 2,3 states. [42] The energy transfer mechanisms between Er 3+ and Tm 3+ are summarized in Figure 11, and correspond to the following transitions [43] Er 3+ ( 4 S 3∕2…”

Section: Mechanisms For Variations In Emission Intensitiesmentioning

confidence: 99%

Upconversion Emission in Tm/Er/Yb Co‐Doped Yttria Stabilized Zirconia Single Crystals

Pan

et al. 2022

Crystal Research and Technology

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Blue, green, and red emissions through upconversion and energy transfer processes are investigated as a function of the Tm3+ concentration in Tm/Er/Yb triply doped yttria stabilized zirconia (YSZ) crystals upon excitation at 980 nm. YSZ doped with 0.075–0.250 mol% Tm2O3, 1.50 mol% Er2O3, and 2.00 mol% Yb2O3 are prepared by the optical floating zone method, and confirmed to be in the cubic phase by X‐ray diffraction. The blue emission corresponds to the Tm3+ 1G4→3H6 transition, and is produced through a three‐photon process, whereas the green and red light are emitted through two‐photon processes from the Er3+ 2H11/2→4I15/2 and 4S3/2→4I15/2 transitions for green and the Er3+ 4F9/2→4I15/2 transition for red. However, interactions between the different lanthanide ions is a factor in determining the overall color of these triply doped crystals, and this is not simply a summation of the results from the singly doped systems, so this mechanism of energy transfer is discussed in detail. The CIE color chromaticity coordinates for the present samples under excitation at 980 nm approach (0.39, 0.55), which is in the yellow‐green region.

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“…In particular, this phenomenon can be effectively exploited for drug delivery, bio-detection, fluorescence imaging, etc. [14]- [19].…”

Section: Related Work and Motivationmentioning

confidence: 99%

A Molecular Optical Channel Model Based on Phonon-Assisted Energy Transfer Phenomenon

Loscrì

Unluturk

Vegni

2018

IEEE Trans. Commun.

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Recent progress in the field of nanotechnology is enabling communication between nanodevices to be considered also for in-vivo applications. In particular, nanodevices enabling light-controlled process have started to attract a lot of interest in the research community, due to potential applications like healthcare wearable devices, intra-body applications and optogenetics, whose main objective is to stimulate neurons by the means of the light signals.Leveraging on these premises, we consider upconversion phenomenon, namely the ability of specific nanoparticles to convert low energy radiations (e.g., near-infrared radiations) into higher energy radiation (e.g., visible light) via a non-linear process. Energy transfer as viable communication mean has been already considered based on Förster-Resonance-Energy Transfer. In this paper, we focus on Phonon-Assisted Energy Transfer, and we analyze the requirements and conditions for generating optical signals from a genuine signal processing point of view. More specifically, based on information theory approach, we derive the conditions to minimize the error probability. We show that the dopant concentration (i.e., concentration of elements drugging a pure material in order to change its features) mostly influences the correct generation of the light signal. The performed analysis is based on experimental results taken from [1], [2].

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Red–green–blue upconversion luminescence and energy transfer in Yb3+/Er3+/Tm3+ doped YP5O14 ultraphosphates

Cited by 31 publications

References 38 publications

Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions

Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions

Upconversion Emission in Tm/Er/Yb Co‐Doped Yttria Stabilized Zirconia Single Crystals

A Molecular Optical Channel Model Based on Phonon-Assisted Energy Transfer Phenomenon

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