An effect of Zr4+ co-doping of YAP:Ce scintillator

Nikl, M.; Mareš, J.; Chval, J.; Mihóková, E.; Solovieva, N.; Martini, M.; Vedda, A.; Blažek, K.; Malý, P.; Nejezchleb, Karel; Fabeni, P.; Pazzi, G.P.; Babin, V.; Kalder, K.; Krasnikov, А.; Zazubovich, S.; D’Ambrosio, C.

doi:10.1016/s0168-9002(02)00711-8

Cited by 46 publications

(25 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1a, see also Ref. [8]). This doublet structure is caused by the spin -orbit splitting of the 4f 1 ground state of Ce 3+ ion into two, 2 F 5/2 and 2 F 7/2 , levels.…”

Section: Yalo 3 :Ce Crystalsmentioning

confidence: 84%

“…[5], [9], [17], and references therein). Electron traps are most probably related to the oxygen vacancies [8,9]. According to Ref.…”

Section: Discussionmentioning

confidence: 99%

“…[8], [9] Table 1. Crystals were visibly clear and of perfect optical quality with the exception of YAP:Ce15000, Zr400 and LuYAP:Ce8000, Zr1000, which showed a tint of gray color and/or possible inclusions in the crystal volume.…”

Section: Methodsmentioning

confidence: 99%

“…Radiation defects were also studied in YAP:Ce and LuYAP:Ce, but only in the crystals irradiated with the nonselective ionizing radiation. For YAP:Ce, the influence of Zr on defects creation efficiency was studied [8].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Luminescence and defects creation in Ce³⁺‐doped YAlO₃ and Lu_0.3Y_0.7AlO₃ crystals

Blažek

Krasnikov

Nejezchleb

et al. 2005

Physica Status Solidi (b)

View full text Add to dashboard Cite

Luminescence, energy transfer and defects creation processes were studied for the Ce 3+ -doped YAlO 3 and Lu x Y 1-x AlO 3 (x = 0.3) crystals in the temperature range 4.2 -300 K under selective photoexcitation in the energy range 3.5 -11.5 eV. For the first time, defects creation spectra were measured and analyzed. Influence of the charge and ionic radii of co-doping ions on the luminescence and defects creation efficiency was considered. The origin of the defects created and possible mechanisms of their formation were discussed.

show abstract

“…1a, see also Ref. [8]). This doublet structure is caused by the spin -orbit splitting of the 4f 1 ground state of Ce 3+ ion into two, 2 F 5/2 and 2 F 7/2 , levels.…”

Section: Yalo 3 :Ce Crystalsmentioning

confidence: 84%

“…[5], [9], [17], and references therein). Electron traps are most probably related to the oxygen vacancies [8,9]. According to Ref.…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Luminescence and defects creation in Ce³⁺‐doped YAlO₃ and Lu_0.3Y_0.7AlO₃ crystals

Blažek

Krasnikov

Nejezchleb

et al. 2005

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

“…It has also been shown that presence of the Ce 4+ or O -hole absorption significantly decreases the scintillation light yield and increase the slow component in YAP:Ce 3+ scintillation kinetics [4,6]. In order to decrease the concentration of oxygen vacancies, codoping by tetravalent ions such as Zr 4+ was successfully realized in YAP:Ce [7]. It results in decrease of thermoluminescence (TSL) glow peak intensity above room temperature (RT) with increasing of Zr concentration.…”

Section: +mentioning

confidence: 99%

Crystal growth and scintillating properties of (Pr,Si)‐doped YAlO₃

Zhuravleva¹,

Novoselov

Mihóková

et al. 2007

Cryst. Res. Technol.

View full text Add to dashboard Cite

This paper deals with Pr-doped and Pr, Si-codoped YAlO 3 single crystal growth by the micro-pulling-down method and investigation of their spectroscopic and scintillating properties. The Pr 3+ 5d-4f radioluminescence intensity is more than 10 times higher than that of Bi 4 Ge 3 O 12 standard sample, but the Si-codoping decreases it. Absorption spectra of as-grown and air-annealed Si,Pr-codoped YAlO 3 samples show along with an onset of 4f-5d transition round 230 nm the induced absorption band at 400 nm which possibly related to a hole center absorption (Pr 4+ or O -). Thermoluminescence measurements above the room temperature were performed in order to monitor deep electron traps. Strong concentration dependence of thermoluminescence was observed for Pr:YAlO 3 glow curves.

show abstract

Defect structure of ZrO₂‐doped rare earth perovskite scintillators

Stanek

Levy

McClellan

et al. 2005

Physica Status Solidi (b)

View full text Add to dashboard Cite

The efficiency of scintillator materials is decreased by processes associated with electrons or holes trapped at point defects. It therefore follows that minimizing the concentration of the defects responsible for trapped electrons/holes will in‐ crease the scintillator efficiency. It has been proposed that annealing or doping oxide scintillators with aliovalent ions can change the concentration of point defects (M. Nikl, phys. stat. sol. (a) 178, 595 (2000) [1]). Here, we predict the defect structures corresponding to ZrO2 doping in a series of rare earth aluminate (REAlO3) perovskites. From these calculations, we predict the mechanism leading to the decrease in oxygen vacancy concentration (the predominant electron trap in REAlO3). We propose this mechanism to be an example of “defect engineering”, where a particularly egregious defect is traded for a less deleterious defect. These results can be used to further optimize such scintillator materials. A perfect REAlO3 orthorhombic perovskite unit cell (a), compared to the same unit cell with the defects associated with ZrO2 doping, namely $ {\rm Zr}^\bullet _{\rm RE} $, $ {\rm Zr}^\bullet _{\rm Al} $ and $ {\rm O}'' _{\rm i} $ (b). (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

An effect of Zr4+ co-doping of YAP:Ce scintillator

Cited by 46 publications

References 12 publications

Luminescence and defects creation in Ce³⁺‐doped YAlO₃ and Lu_0.3Y_0.7AlO₃ crystals

Luminescence and defects creation in Ce³⁺‐doped YAlO₃ and Lu_0.3Y_0.7AlO₃ crystals

Crystal growth and scintillating properties of (Pr,Si)‐doped YAlO₃

Defect structure of ZrO₂‐doped rare earth perovskite scintillators

Contact Info

Product

Resources

About

An effect of Zr4+ co-doping of YAP:Ce scintillator

Cited by 46 publications

References 12 publications

Luminescence and defects creation in Ce3+‐doped YAlO3 and Lu0.3Y0.7AlO3 crystals

Luminescence and defects creation in Ce3+‐doped YAlO3 and Lu0.3Y0.7AlO3 crystals

Crystal growth and scintillating properties of (Pr,Si)‐doped YAlO3

Defect structure of ZrO2‐doped rare earth perovskite scintillators

Contact Info

Product

Resources

About

Luminescence and defects creation in Ce³⁺‐doped YAlO₃ and Lu_0.3Y_0.7AlO₃ crystals

Luminescence and defects creation in Ce³⁺‐doped YAlO₃ and Lu_0.3Y_0.7AlO₃ crystals

Crystal growth and scintillating properties of (Pr,Si)‐doped YAlO₃

Defect structure of ZrO₂‐doped rare earth perovskite scintillators