Dynamics and energy transfer of Sm2+ in KY3F10 crystals

Mitsuo Yamaga, Tatsuya Nakamura, Yohei Oda, Jon-Paul R. Wells, Thomas P. J. Han

Research output: Contribution to journalConference Contribution

Abstract

Three distinct Sm2+ centers in KY3F10 have been identified by laser selective excitation. The excited states of two of the Sm2+ centers consist of the D-5(J) (J = 0,1,2,3) multiplets and high lying 4f(5)5d states, whereas the bottom of the 4f(5)5d states for the third Sm2+ center lies just above the D-5(0) nmItiplet. Vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, corresponding to the 4f -> 5d transitions, produce cascade luminescence from the D-5(J) (J = 0,1,2,3) excited multiplets to the lowest F-7(J) (J = 0,1,2,3,4) multiplets. UV excitation also produces a broad emission band with a peak at 450 nm, which may be assigned to color centers (F center) being an electron trapped at a F- vacancy as a charge compensator for Sm2+. The temperature dependence of the Sm2+ luminescence spectra excited by VUV and UV radiation clearly demonstrates inter-configurational relaxation from the 4f(5)5d excited states to the D-5(J) (J = 0,1,2,3) multiplets and intra-configurational relaxation from the D-5(3) multiplet to the D-5(J) (J = 0,1,2) multiplets. The luminescence decay curves also show energy transfer between the two Sm2+ centers.

LanguageEnglish
PagesS241-S245
Number of pages5
JournalJournal of Ceramic Processing Research
Volume12
Issue numberspecial issue 3
Publication statusPublished - Nov 2011
EventInternational Symposium on Crystal Growth - Seoul, Korea, Republic of
Duration: 1 Jan 2010 → …

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Energy transfer
Luminescence
Excited states
Crystals
Vacuum
Color centers
Electron transitions
Ultraviolet radiation
Vacancies
Electrons
Lasers
Temperature

Keywords

  • dynamics
  • energy transfer
  • sm2
  • ky3f10
  • crystals
  • phosphor
  • dynamics of the excited states
  • samarium ions
  • rare-earth ions

Cite this

Yamaga, M., Nakamura, T., Oda, Y., Wells, J-P. R., & Han, T. P. J. (2011). Dynamics and energy transfer of Sm2+ in KY3F10 crystals. Journal of Ceramic Processing Research, 12(special issue 3), S241-S245.
Yamaga, Mitsuo ; Nakamura, Tatsuya ; Oda, Yohei ; Wells, Jon-Paul R. ; Han, Thomas P. J. / Dynamics and energy transfer of Sm2+ in KY3F10 crystals. In: Journal of Ceramic Processing Research. 2011 ; Vol. 12, No. special issue 3. pp. S241-S245.
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abstract = "Three distinct Sm2+ centers in KY3F10 have been identified by laser selective excitation. The excited states of two of the Sm2+ centers consist of the D-5(J) (J = 0,1,2,3) multiplets and high lying 4f(5)5d states, whereas the bottom of the 4f(5)5d states for the third Sm2+ center lies just above the D-5(0) nmItiplet. Vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, corresponding to the 4f -> 5d transitions, produce cascade luminescence from the D-5(J) (J = 0,1,2,3) excited multiplets to the lowest F-7(J) (J = 0,1,2,3,4) multiplets. UV excitation also produces a broad emission band with a peak at 450 nm, which may be assigned to color centers (F center) being an electron trapped at a F- vacancy as a charge compensator for Sm2+. The temperature dependence of the Sm2+ luminescence spectra excited by VUV and UV radiation clearly demonstrates inter-configurational relaxation from the 4f(5)5d excited states to the D-5(J) (J = 0,1,2,3) multiplets and intra-configurational relaxation from the D-5(3) multiplet to the D-5(J) (J = 0,1,2) multiplets. The luminescence decay curves also show energy transfer between the two Sm2+ centers.",
keywords = "dynamics, energy transfer, sm2, ky3f10 , crystals, phosphor, dynamics of the excited states, samarium ions, rare-earth ions",
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Yamaga, M, Nakamura, T, Oda, Y, Wells, J-PR & Han, TPJ 2011, 'Dynamics and energy transfer of Sm2+ in KY3F10 crystals' Journal of Ceramic Processing Research, vol. 12, no. special issue 3, pp. S241-S245.

Dynamics and energy transfer of Sm2+ in KY3F10 crystals. / Yamaga, Mitsuo; Nakamura, Tatsuya; Oda, Yohei; Wells, Jon-Paul R.; Han, Thomas P. J.

In: Journal of Ceramic Processing Research, Vol. 12, No. special issue 3, 11.2011, p. S241-S245.

Research output: Contribution to journalConference Contribution

TY - JOUR

T1 - Dynamics and energy transfer of Sm2+ in KY3F10 crystals

AU - Yamaga, Mitsuo

AU - Nakamura, Tatsuya

AU - Oda, Yohei

AU - Wells, Jon-Paul R.

AU - Han, Thomas P. J.

PY - 2011/11

Y1 - 2011/11

N2 - Three distinct Sm2+ centers in KY3F10 have been identified by laser selective excitation. The excited states of two of the Sm2+ centers consist of the D-5(J) (J = 0,1,2,3) multiplets and high lying 4f(5)5d states, whereas the bottom of the 4f(5)5d states for the third Sm2+ center lies just above the D-5(0) nmItiplet. Vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, corresponding to the 4f -> 5d transitions, produce cascade luminescence from the D-5(J) (J = 0,1,2,3) excited multiplets to the lowest F-7(J) (J = 0,1,2,3,4) multiplets. UV excitation also produces a broad emission band with a peak at 450 nm, which may be assigned to color centers (F center) being an electron trapped at a F- vacancy as a charge compensator for Sm2+. The temperature dependence of the Sm2+ luminescence spectra excited by VUV and UV radiation clearly demonstrates inter-configurational relaxation from the 4f(5)5d excited states to the D-5(J) (J = 0,1,2,3) multiplets and intra-configurational relaxation from the D-5(3) multiplet to the D-5(J) (J = 0,1,2) multiplets. The luminescence decay curves also show energy transfer between the two Sm2+ centers.

AB - Three distinct Sm2+ centers in KY3F10 have been identified by laser selective excitation. The excited states of two of the Sm2+ centers consist of the D-5(J) (J = 0,1,2,3) multiplets and high lying 4f(5)5d states, whereas the bottom of the 4f(5)5d states for the third Sm2+ center lies just above the D-5(0) nmItiplet. Vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, corresponding to the 4f -> 5d transitions, produce cascade luminescence from the D-5(J) (J = 0,1,2,3) excited multiplets to the lowest F-7(J) (J = 0,1,2,3,4) multiplets. UV excitation also produces a broad emission band with a peak at 450 nm, which may be assigned to color centers (F center) being an electron trapped at a F- vacancy as a charge compensator for Sm2+. The temperature dependence of the Sm2+ luminescence spectra excited by VUV and UV radiation clearly demonstrates inter-configurational relaxation from the 4f(5)5d excited states to the D-5(J) (J = 0,1,2,3) multiplets and intra-configurational relaxation from the D-5(3) multiplet to the D-5(J) (J = 0,1,2) multiplets. The luminescence decay curves also show energy transfer between the two Sm2+ centers.

KW - dynamics

KW - energy transfer

KW - sm2

KW - ky3f10

KW - crystals

KW - phosphor

KW - dynamics of the excited states

KW - samarium ions

KW - rare-earth ions

M3 - Conference Contribution

VL - 12

SP - S241-S245

JO - Journal of Ceramic Processing Research

T2 - Journal of Ceramic Processing Research

JF - Journal of Ceramic Processing Research

SN - 1229-9162

IS - special issue 3

ER -

Yamaga M, Nakamura T, Oda Y, Wells J-PR, Han TPJ. Dynamics and energy transfer of Sm2+ in KY3F10 crystals. Journal of Ceramic Processing Research. 2011 Nov;12(special issue 3):S241-S245.