Research progress of gadolinium aluminum garnet based optical materials

Liu, Guiyuan; Wang, Bo; Li, Jinkai; Cao, Bingqiang; Lu, Yizhong; Liu, Zongming

doi:10.1016/j.physb.2020.412775

Cited by 26 publications

(9 citation statements)

References 201 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results in previous published work [ 33 , 34 ] show that GdAG will decompose at 1500 °C to GAP and Al 2 O 3 , and at least 50% Tb substitution to Gd is needed to stabilize the GdAG structure, while Ga 3+ substitution to Al 3+ is helpful to expend and stabilize the lattice. However, in our case, 7% Tb 3+ can obtain a single garnet phase.…”

Section: Resultsmentioning

confidence: 89%

Wide Concentration Range of Tb3+ Doping Influence on Scintillation Properties of (Ce, Tb, Gd)3Ga2Al3O12 Crystals Grown by the Optical Floating Zone Method

Shi

Huang

et al. 2022

Materials

View full text Add to dashboard Cite

To obtain a deeper understand of the energy transfer mechanism between Ce3+ and Tb3+ ions in the aluminum garnet hosts, (Ce, Tb, Gd)3Ga2Al3O12 (GGAG:Ce, Tb) single crystals grown by the optical floating zone (OFZ) method were investigated systematically in a wide range of Tb3+ doping concentration (1–66 at.%). Among those, crystal with 7 at.% Tb reached a single garnet phase while the crystals with other Tb3+ concentrations are mixed phases of garnet and perovskite. Obvious Ce and Ga loss can be observed by an energy dispersive X-ray spectroscope (EDS) technology. The absorption bands belonging to both Ce3+ and Tb3+ ions can be observed in all crystals. Photoluminescence (PL) spectra show the presence of an efficient energy transfer from the Tb3+ to Ce3+ and the gradually quenching effect with increasing of Tb3+ concentration. GGAG: 1% Ce3+, 7% Tb3+ crystal was found to possess the highest PL intensity under excitation of 450 nm. The maximum light yield (LY) reaches 18,941 pho/MeV. The improved luminescent and scintillation characteristics indicate that the cation engineering of Tb3+ can optimize the photoconversion performance of GGAG:Ce.

show abstract

Section: Resultsmentioning

confidence: 89%

Wide Concentration Range of Tb3+ Doping Influence on Scintillation Properties of (Ce, Tb, Gd)3Ga2Al3O12 Crystals Grown by the Optical Floating Zone Method

Shi

Huang

et al. 2022

Materials

View full text Add to dashboard Cite

show abstract

“…It is worth mentioning that in addition to the application in the scintillators, it is also easier for the multicomponent garnet to achieve ultrashort pulse lasers with wavelength tunability due to the wider emission band [220][221][222][223]. Moreover, due to the higher brightness and tunable luminescence, the multicomponent garnets can also be prepared into phosphors and ceramics for high-power white LEDs by introducing different luminescent centers [224,225]. As the number of elements increases, the delineation of properties and applications of the garnet scintillators becomes less clear.…”

Section: Quaternary and Higher Garnet Ceramicsmentioning

confidence: 99%

Development and prospects of garnet ceramic scintillators: A review

et al. 2022

View full text Add to dashboard Cite

Garnet ceramic scintillators are a class of inorganic scintillation materials with excellent overall performance. The flexibility of cation substitution in different lattice positions leads to tunable and versatile properties and a wide range of applications. This paper starts with an overview of the development history of the inorganic scintillation materials, followed by a description of major preparation methods and characterization of garnet scintillation ceramics. Great progress obtained in recent years consisting in applying the band-gap and defect engineering strategies to the garnet scintillation ceramics is reviewed. Finally, the respective problems in the preparation and performance of multicomponent garnet single crystals and ceramics and the effective solutions are discussed. The garnet scintillation ceramics with the highest application potential are summarized, and the future development directions are proposed.

show abstract

“…221), which shows an extremely stable structure at room temperature [ 27 ]. However, it cannot be considered as a traditional host material because it lacks a 4f electron layer [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Eu3+-Doped (Gd, La)AlO3 Perovskite Single Crystals: Growth and Red-Emitting Luminescence

Zhang

Shi

et al. 2023

Materials

View full text Add to dashboard Cite

Eu3+-doped GdAlO3 (Eu:GAP) and Gd0.5La0.5AlO3 (Eu:GLAP) perovskite single crystals were successfully grown using the optical floating zone (OFZ) method. The microstructure, optical, photoluminescence (PL) and radioluminescence (under X-ray excitation, XEL) were investigated. Under the PL excitation of 275 nm, obvious emission bands peaking at 556 nm, 592 nm, 617 nm, 625 nm, 655 nm, and 706 nm were demonstrated, which correspond to the 5D0 → 7Fj (j = 0–4) transitions of Eu3+. The grown Eu:GAP single crystal showed a stronger PL intensity compared with that of Eu:GLAP in the red light region. After annealing at 1000 °C for 4 h in weak reductive atmosphere (Ar + 5% H2), a slight redshift and dramatic enhancement of PL and XEL intensity occurred. In addition, Eu:GLAP show a more intense XEL emission than that of Eu:GAP. Considering their different densities, these two kinds of red luminescence phosphors are proposed to be promising in a wide field of X-ray imaging, warm white, or plant lighting, respectively.

show abstract

Research progress of gadolinium aluminum garnet based optical materials

Cited by 26 publications

References 201 publications

Wide Concentration Range of Tb3+ Doping Influence on Scintillation Properties of (Ce, Tb, Gd)3Ga2Al3O12 Crystals Grown by the Optical Floating Zone Method

Wide Concentration Range of Tb3+ Doping Influence on Scintillation Properties of (Ce, Tb, Gd)3Ga2Al3O12 Crystals Grown by the Optical Floating Zone Method

Development and prospects of garnet ceramic scintillators: A review

Eu3+-Doped (Gd, La)AlO3 Perovskite Single Crystals: Growth and Red-Emitting Luminescence

Contact Info

Product

Resources

About