Radiative and radiationless processes of Er3+ in MnF2

Flaherty, John M.; Bartolo, Baldassare Di

doi:10.1016/0022-2313(73)90035-5

Cited by 46 publications

(18 citation statements)

References 9 publications

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“…4 In Figure 16, the emission from the F 912 and 4 1 excited states have been aligned to determine if five bands ll./2 can be detected :in both, which agree, and may be due to transitions to the five ground state levels. From other work it is expected thc9:t the total extent of the spectrum will be about 750 cm-l (46). This is also the extent of the spectra shown in Figure 6.…”

supporting

confidence: 50%

“…An excellent review of the unirradiated perturbed manganese emission has been given by Imbusch (43 Thus the purpose of this study is to investigate the radiative, 3+ radiationless, and energy transfer properties of RbMnF 3 :Er • Radiationless relaxation is discussed ·in terms of the phenomenological model of and compared with the values obtained ·from Flaherty and Di Bartolo's model (46). In addition, the properties 3+ of irradiated RbMnF 3 :Er are also investigated.…”

Section: + 2+mentioning

confidence: 99%

“…As the temperature increases. t decreases consistent max with the increase in the nonradiative rate pAB" Flaherty and Di Bartolo (46) also have developed an expression for the nonradiative rate between two levels A and B using only lifeti•s and integrated intensities of these levels at two different …”

Section: Construction Of a Configurational Coordinate Diagrammentioning

confidence: 99%

“…In Figure 18 low temperature excitation spectrum is shown for 2+ 4 3+ Mn and the F 912 Er emissions (see Figure 15). This type of decay is often called "fluorescent rise type" of decay (46). Since ther~ exists the possibility that electron irradiation produced defects can perturb the Erl+ ions, an emission spectrum for the 4 F 912 Er 3 + a.ission was taken.…”

mentioning

confidence: 99%

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Optical properties of RbMnF3:Er3+

Iverson

Sibley

1980

Phys. Rev. B

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supporting

confidence: 50%

Section: + 2+mentioning

confidence: 99%

Section: Construction Of a Configurational Coordinate Diagrammentioning

confidence: 99%

mentioning

confidence: 99%

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Optical properties of RbMnF3:Er3+

Iverson

Sibley

1980

Phys. Rev. B

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“…Introduction. -Energy transfer has been studied extensively in RbMnF 3 and MnF 2 [1][2][3][4][5][6]. Recent investigations of energy transfer between the Mn 2+ sublattice and Er 3+ ions in both RbMnF 3 and MnF 2 have shown that energy transfer from Mn 2+ ions to Er 3+ ions occurs between 15 K and 70 K and that above 110 K the nonradiative transitions strongly quench the Er 3+ radiative emission.…”

mentioning

confidence: 99%

Energy transfer in unirradiated and irradiated RbMnF₃ and RbMnF₃ : Er

Sibley

Iverson

1980

J. Phys. Colloques

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Le transfert d'énergie joue un rôle majeur dans la plupart des processus d'up-conversion et dans certains lasers. Les impuretés et aussi les défauts induits par la radiation sont tous deux capables de modifier le transfert d'énergie dans les matières de façon soit constructive soit destructive, selon le système. Dans cette étude nous présentons, sur les propriétés optiques de RbMnF 3 et de RbMnF 3 :Er, des données prises par des mesures d'absorption, d'émission, d'excitation et de durée de vie. Dans une matière non irradiée les propriétés optiques peuvent être décrites par les paramètres de champ cristallin et par l'emploi des analyses de Struck et Fonger et de Flaherty et DiBartolo.-Dans le cas des matières irradiées, les énormes changements de grandeur oscillante pour les ions Mn 2+ situés à côté d'interstitiels induits par la radiation ou de centres F, peuvent modifier fortement le processus du transfert d'énergie. Abstract.-Energy transfer plays a major role in most up-conversion processes and in some lasers. Both impurities and radiation-induced defects can affect the energy transfer in materials either constructively or destructively, depending on the system. In this study we present data on the optical properties of RbMnF 3 and RbMnF 3 : Er from measurements of the absorption, emission, excitation and lifetimes. In unirradiated material the optical properties can be described by crystal field parameters and by the use of the analysis of Struck and Fonger, and Flaherty and DiBartolo. In the case of irradiated materials, the huge oscillator strength changes for Mn 2+ ions located next to radiation-induced interstitials or F centres can strongly affect the energy transfer process.

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Mn²⁺ Dopant‐Controlled Synthesis of NaYF₄:Yb/Er Upconversion Nanoparticles for in vivo Imaging and Drug Delivery

et al. 2012

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Pure dark red emission (650-670 nm) of NaYF(4):Yb/Er upconversion nanoparticles (UCNPs) is achieved by manganese ions (Mn(2+)) doping. In addition, the Mn(2+)-doping can also control the crystalline phase and size of the resulting UCNPs simultaneously. Drug delivery studies suggest the promise of these UCNPs as drug carriers for intracellular drug delivery and eventually as a multifunctional nanoplatform for simultaneous diagnosis and therapy.

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Radiative and radiationless processes of Er3+ in MnF2

Cited by 46 publications

References 9 publications

Optical properties of RbMnF3:Er3+

Optical properties of RbMnF3:Er3+

Energy transfer in unirradiated and irradiated RbMnF₃ and RbMnF₃ : Er

Mn²⁺ Dopant‐Controlled Synthesis of NaYF₄:Yb/Er Upconversion Nanoparticles for in vivo Imaging and Drug Delivery

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Radiative and radiationless processes of Er3+ in MnF2

Cited by 46 publications

References 9 publications

Optical properties of RbMnF3:Er3+

Optical properties of RbMnF3:Er3+

Energy transfer in unirradiated and irradiated RbMnF3 and RbMnF3 : Er

Mn2+ Dopant‐Controlled Synthesis of NaYF4:Yb/Er Upconversion Nanoparticles for in vivo Imaging and Drug Delivery

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Product

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Energy transfer in unirradiated and irradiated RbMnF₃ and RbMnF₃ : Er

Mn²⁺ Dopant‐Controlled Synthesis of NaYF₄:Yb/Er Upconversion Nanoparticles for in vivo Imaging and Drug Delivery