Tb-doped YPO4 phosphors: Polyacrylamide gel synthesis and optical properties

Yang, Jinyu; Luo, Lin; Chen, Zhuo; Chen, Xueyu; Tang, Xiao-yu

doi:10.1016/j.jallcom.2016.08.065

Cited by 18 publications

(5 citation statements)

References 36 publications

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“…The τ for Tb 3+ at the A site (Tb La ) excited at 230 nm was 0.4 ms for the 5 D 3 – 7 F 6 transition and 1.6 ms for the 5 D 4 – 7 F 5 transition. This difference in the decay time between the blue-violet and the green luminescence has been reported in the literature . When Tb 3+ at the B site (Tb Sc ) was excited at 313 nm, the PL peak derived from the 5 D 4 – 7 F 5 transition is split into two at 545 and 554 nm as shown in Figure b.…”

supporting

confidence: 69%

Luminescence and Location of Gd³⁺ or Tb³⁺ Ions in Perovskite-Type LaScO₃

et al. 2018

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The luminescence properties of Gd or Tb ions at La and Sc sites were investigated in LaScO with a distorted perovskite-type structure (ABO). Although the luminescence of lanthanide ions located at B sites is not common and has not been examined in detail, Gd or Tb luminescence from B sites and A sites is clearly observed in Gd- or Tb-doped LaScO. The differences in the luminescence characteristics concern peak positions, peak shapes, and decay time, which are all influenced by the crystal field and the site symmetry. The UV luminescence of Gd at B sites shows a red shift compared to Gd at A sites, and the green luminescence of Tb at B sites contrasts with the blue-violet and green luminescence of Tb at A sites. The decay time of the luminescence from B sites is systematically longer than that from A sites in both the Gd and Tb cases.

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supporting

confidence: 69%

Luminescence and Location of Gd³⁺ or Tb³⁺ Ions in Perovskite-Type LaScO₃

et al. 2018

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“…Figure a,b shows IR spectra at 400–1300 cm –1 of the Er 3+ :GdPO 4 and Er 3+ :YPO 4 crystals, respectively. The absorption band at 1000–1110 cm –1 is attributed to the antisymmetric stretching vibration υ 3 of the PO 4 tetrahedron, and the band at 520–650 cm –1 is attributed to the antisymmetric bending vibration υ 4 of the PO 4 tetrahedron. − Compared with the Er 3+ :YPO 4 crystal, more absorption bands observed in the Er 3+ :GdPO 4 crystal may be caused by its lower symmetry. The absorption bands that peaked at 968 and 493 cm –1 , which are only observed in the Er 3+ :GdPO 4 crystal, are ascribed to the symmetric stretching vibration υ 1 and bending vibration υ 2 of the PO 4 tetrahedron, respectively. , Furthermore, compared with that (about 1250 cm –1 ) of the Er 3+ -doped PG, the maximum phonon energies of the Er 3+ :GdPO 4 (1105 cm –1 ) and Er 3+ :YPO 4 (1066 cm –1 ) crystals are smaller.…”

Section: Resultsmentioning

confidence: 99%

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Han,

Lin,

Huang

et al. 2024

Crystal Growth & Design

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Using the top-seeded flux method, monoclinic Er 3+ :GdPO 4 and tetragonal Er 3+ :YPO 4 crystals were grown. Polarized spectral properties of these two crystals with different structures were investigated at room temperature and compared. Peak absorption cross sections of the Er 3+ :GdPO 4 crystal for E//Y polarization and Er 3+ :YPO 4 crystal for π polarization are 1.02 × 10 −20 cm 2 at 1525 nm and 4.11 × 10 −20 cm 2 at 1506 nm, respectively. Peak emission cross sections of the Er 3+ :GdPO 4 crystal for E//Y polarization and Er 3+ :YPO 4 crystal for π polarization are 0.88 × 10 −20 cm 2 at 1525 nm and 2.28 × 10 −20 cm 2 at 1506 nm, respectively. For the 4 I 13/2 multiplet of the Er 3+ :GdPO 4 and Er 3+ :YPO 4 crystals, the fluorescence lifetimes are 5.32 and 4.49 ms, and the fluorescence quantum efficiencies are 81 and 95%, respectively. The full widths at half-maximum of the gain spectra of the Er 3+ :GdPO 4 crystal for E//Z polarization and Er 3+ :YPO 4 crystal for π polarization are 60 and 8 nm, respectively, when the inversion parameter is 0.5. Experimental results indicate that the Er 3+ :YPO 4 crystal is a good gain medium of the highly efficient, high-power, and low-threshold 1.55 μm laser, while the Er 3+ :GdPO 4 crystal is a promising gain medium used in broadband tunable and ultrashort pulse 1.55 μm lasers.

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“…Amorphous and crystalline materials doped with rare earth (RE) or transition metal ions have been developed in recent years as luminescent materials (phosphors) for use in a variety of disciplines including research and everyday applications. The phosphor materials have been known for designing and developing revolutionary photonic devices, optical detectors, solid-state lasers, solid-state lighting, and fluorescent displays, 1–3 and in the field of energy-efficient technology for the use of crystalline phosphors. These materials offer two basic advantages.…”

Section: Introductionmentioning

confidence: 99%

Origin of the active luminescence from Sm³⁺-activated borate phosphors: a correlational study of trap states and decay kinetics

et al. 2023

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Tb-doped YPO4 phosphors: Polyacrylamide gel synthesis and optical properties

Cited by 18 publications

References 36 publications

Luminescence and Location of Gd³⁺ or Tb³⁺ Ions in Perovskite-Type LaScO₃

Luminescence and Location of Gd³⁺ or Tb³⁺ Ions in Perovskite-Type LaScO₃

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Origin of the active luminescence from Sm³⁺-activated borate phosphors: a correlational study of trap states and decay kinetics

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Tb-doped YPO4 phosphors: Polyacrylamide gel synthesis and optical properties

Cited by 18 publications

References 36 publications

Luminescence and Location of Gd3+ or Tb3+ Ions in Perovskite-Type LaScO3

Luminescence and Location of Gd3+ or Tb3+ Ions in Perovskite-Type LaScO3

Growth and Spectroscopic Comparison of Monoclinic Er3+:GdPO4 and Tetragonal Er3+:YPO4 Crystals for 1.55 μm Laser Application

Origin of the active luminescence from Sm3+-activated borate phosphors: a correlational study of trap states and decay kinetics

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Luminescence and Location of Gd³⁺ or Tb³⁺ Ions in Perovskite-Type LaScO₃

Luminescence and Location of Gd³⁺ or Tb³⁺ Ions in Perovskite-Type LaScO₃

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Origin of the active luminescence from Sm³⁺-activated borate phosphors: a correlational study of trap states and decay kinetics