Effect of air annealing on the spectral properties of Ce:Y3Al5O12 single crystals grown by the temperature gradient technique

Zeng, Xionghui; Zhao, Guangjun; Xu, Jing; Liu, Hongjun; He, Xiaoming; Pang, Huiyong; Jie, Mingyin

doi:10.1016/j.jcrysgro.2004.10.045

Cited by 36 publications

(18 citation statements)

References 16 publications

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“…Increased Pr doping practically kills the absorption in this zone and also significantly reduces the two principal induced-absorption bands. Similar bands around 300 and 370 nm observed in absorption spectra of YAG:Ce crystals grown by temperature gradient technique were attributed to the F + -and F-type colour centres, respectively [11]. Both bands were also observed in γ-irradiated Czochralski grown YAG:Ce crystals [12].…”

supporting

confidence: 66%

Luminescence and scintillation properties of Y₃Al₅O₁₂:Pr single crystal

Mihóková

Nikl

Pejchal

et al. 2007

Phys. Status Solidi (c)

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We investigated Czochralski-grown YAG:Pr single crystal as a potential novel scintillator. Optical characteristics including photoluminescence, radioluminescence, scintillation decay, radiation damage and thermoluminescence were measured. Their dependence on the dopant concentration was studied. The radiation damage results show that with increasing concentration of Pr the radiation damage reduces. Thermoluminescence above room temperature shows the dominant glow curve peak around 250• C. Comparing to YAG:Ce scintillator an advantage of YAG:Pr is its much faster scintillation decay (16-17 ns at room temperature) and an absence of slow components in the decay. Therefore YAG:Pr appears as potentially interesting scintillator material.1 Introduction Scintillation detectors are widely used in many application fields from high energy physics to medical applications and airport security inspection. Depending on the field the requirements on the scintillating material may be considerably different. However, considering characteristics of commercially available inorganic scintillators there is a strong need to find new materials providing, in particular, both high light yield and short decay time. Good candidates appear single crystal hosts doped by lanthanide ions with allowed 5d-4f dipole transition. Among those Ce-activated materials are actively studied. Allowed 5d-4f transitions of Pr 3+ and Nd 3+ might also be of interest [1], even if so far they are much less studied.Luminescence of Pr 3+ ion in suitable crystal hosts is, comparing to the Ce 3+ luminescence, high energy shifted and even faster. Pr 3+ -doped Y 3 Al 5 0 12 (YAG) crystal was investigated in the past as a potential solid-state laser material [2]. Some luminescence and scintillation properties were studied later [3]. Recently high quality single crystals showed surprisingly high light yield [4]. However, the emission at room temperature (RT) is partially quenched [5] which lowers its figure of merit for scintillator application. Scintillation properties of Pr-doped Lu 3 Al 5 0 12 were studied in [6,7] and comparative study of absorption, luminescence and scintillation properties of several Pr-doped materials was performed in [8].In the present work we investigated Czochralski-grown YAG:Pr single crystal as a potential novel scintillator. We studied a set of samples with various concentrations of Pr together with the undoped crystal used as a reference. Optical characteristics including photoluminescence, radioluminescence, radiation damage and thermally stimulated luminescence were measured. Their dependence on the dopant concentration were followed.

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confidence: 66%

Luminescence and scintillation properties of Y₃Al₅O₁₂:Pr single crystal

Mihóková

Nikl

Pejchal

et al. 2007

Phys. Status Solidi (c)

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“…The weak absorption band at 305 nm is also observed in the absorption spectra. The 305 nm band in YAG:Ce crystals has been studied by Zeng et al [23] and others [26][27][28] in detail. They reported that it was attributed to F-type color centers (these O 2À vacancies can trap one electron or two electrons and became F-type centers (F, F þ , etc.…”

Section: Absorption Spectra Of Luyag:cementioning

confidence: 97%

“…Compared with Ce 3 þ -doped YAG [22][23], the absorption positions associated with the 4f-5d transition shifted to shorter wavelengths and the relative intensity of the emission of the antisite defect is reduced remarkably. The reduction of the antisite defect emission reveals that introducing Lu ions into YAG can reduce the antisite defect.…”

Section: Introductionmentioning

confidence: 93%

Crystal growth and optical properties of LuYAG:Ce single crystal

Jiang

Xia

et al. 2012

Journal of Crystal Growth

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“…Zeng et al [20] studied the 370 nm band in Ce:YAG crystals by means of photoluminescence and thermal annealing and attributed this band to F-type color center. Our experimental results further indicate that the 370 nm band may be associated with F + -type color center.…”

Section: Article In Pressmentioning

confidence: 99%

Color centers and charge state change in Ce:YAG crystals grown by temperature gradient techniques

Dong

Zhou

et al. 2006

Journal of Crystal Growth

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Effect of air annealing on the spectral properties of Ce:Y3Al5O12 single crystals grown by the temperature gradient technique

Cited by 36 publications

References 16 publications

Luminescence and scintillation properties of Y₃Al₅O₁₂:Pr single crystal

Luminescence and scintillation properties of Y₃Al₅O₁₂:Pr single crystal

Crystal growth and optical properties of LuYAG:Ce single crystal

Color centers and charge state change in Ce:YAG crystals grown by temperature gradient techniques

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Effect of air annealing on the spectral properties of Ce:Y3Al5O12 single crystals grown by the temperature gradient technique

Cited by 36 publications

References 16 publications

Luminescence and scintillation properties of Y3Al5O12:Pr single crystal

Luminescence and scintillation properties of Y3Al5O12:Pr single crystal

Crystal growth and optical properties of LuYAG:Ce single crystal

Color centers and charge state change in Ce:YAG crystals grown by temperature gradient techniques

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Luminescence and scintillation properties of Y₃Al₅O₁₂:Pr single crystal

Luminescence and scintillation properties of Y₃Al₅O₁₂:Pr single crystal