Energy transfer in CaF<sub>2</sub>Gd, Mn crystals

Bozhevol’nov, V. E.; Ivanov, L. N.; Козлов, В. К.; Voronov, Yu. V.; Timofeev, Yu. P.; Karelin, V. V.

doi:10.1002/pssb.2220780207

Cited by 17 publications

(2 citation statements)

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“…Mn 2 enters substitutionally for Ca 2 , which has an eightfold coordination environment. The room-temperature (RT) excitation spectrum of the Mn 2 emission in CaF 2 has been reported and studied by several workers [2,3]. They assigned the observed excitation bands to transitions from the Mn 2 ground state 6 A 1g S to different excited levels in a cubic environment.…”

Section: Introductionmentioning

confidence: 99%

Optical Spectroscopy of Mn2+ Ions in CaF2

Lira

Méndez

Dagdug

1999

phys. stat. sol. (b)

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Section: Introductionmentioning

confidence: 99%

Optical Spectroscopy of Mn2+ Ions in CaF2

Lira

Méndez

Dagdug

1999

phys. stat. sol. (b)

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“…(3) have investigated the transfer of energy from Gd 8+ to Tb 3+ in borate glass. Bozhevolnov et al (4) give evidence of energy transfer from Gd g+ to Mn 2+ in CaF2. In all these cases the excitation spectra of the activator (A) luminescence show up excitation lines of Gd z+.…”

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confidence: 99%

The Intermediate Role of Gd3+ in the Energy Transfer from a Sensitizer to an Activator (Especially Tb3+)

Hair

Konijnendijk

1980

J. Electrochem. Soc.

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Energy transfer from a sensitizer to an activator via Gd3+ ions is discussed. This is done for the Bi3+ → Dy3+ and Sb3+ → Dy3+ transfer in GdPO4 , and for the Bi3+ → Tb3+ transfer in GdB3O6 . The phosphor Gd0.98Bi0.01Tb0.01B3O6 shows Tb3+ luminescence with a quantum efficiency of 80% for excitation of Bi3+. After excitation of Bi3+, energy transfer takes place to Gd3+ ions. Then the energy may migrate from one Gd3+ to another until energy transfer from Gd3+ to Tb3+ occurs. Compared to the energy transfer in other sensitized Tb3+ phosphors, this process has a high efficiency at relatively low activator concentrations. The energy transfer from Bi3+ to Gd3+ and between Gd3+ions mutually has been investigated for Gd0.99−xLaxBi0.01B3O6 . For x<0.4 energy transfer between Gd3+ ions is observed. The quantum efficiency of the Gd3+ luminescence for Bi3+ excitation of Gd0.59La0.4Bi0.01B3O6 amounts to 75% and decreases for increasing Gd concentrations.

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Manganese Centers in Low Temperature X‐Irradiated CaF₂:Mn

Alcalá

Alonso

Lalinde

et al. 1980

Physica Status Solidi (b)

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The changes i n the optical absorption and emission properties of CaF,:Mn after 15 and 80 K X-irradiation are measured. A new absorption band is created at 450 nm. The same band appears in the excitation spectrum corresponding to Mn2+ emission. Optical and thermal bleaching experiments combined with emission measurements indicate that the 450 n m band is due t o Mn+ created b y X-irradiation. The new band is tentatively assigned t o the %(3d54s) + 7P(3d54p) electronic transition of Mnf in CaF?.On a mesur6 les modifications de l'absorption optique e t de 1'6mission du CaF,:Mn a p r h l'avoir irradi6 avee rayons S A 15 et 80 K. Une nouvelle bande d'absorption situ6e 450 nm est Cree.La m$me bande est dans le spectre d'excitation de l'emision du Mn2+. Experiences de blanchiment optique e t thermique combinhes avec mesures de 1'6mission indiquent que la bande placCe h, 450nm est associee au Mn+ cr6e par l'irradiation. Nous sommes bien tent& d'assigner la nouvelle bande a la transition electronique 'S(3d54s) -+ 7P(3d54p) du Mn+ en CaF,.

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Energy transfer in CaF₂Gd, Mn crystals

Cited by 17 publications

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Optical Spectroscopy of Mn2+ Ions in CaF2

Optical Spectroscopy of Mn2+ Ions in CaF2

The Intermediate Role of Gd3+ in the Energy Transfer from a Sensitizer to an Activator (Especially Tb3+)

Manganese Centers in Low Temperature X‐Irradiated CaF₂:Mn

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Energy transfer in CaF2Gd, Mn crystals

Cited by 17 publications

References 0 publications

Optical Spectroscopy of Mn2+ Ions in CaF2

Optical Spectroscopy of Mn2+ Ions in CaF2

The Intermediate Role of Gd3+ in the Energy Transfer from a Sensitizer to an Activator (Especially Tb3+)

Manganese Centers in Low Temperature X‐Irradiated CaF2:Mn

Contact Info

Product

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Energy transfer in CaF₂Gd, Mn crystals

Manganese Centers in Low Temperature X‐Irradiated CaF₂:Mn