Scintillation properties of CsSrX3:Eu2+ (CsSr1−yEuyX3, X = Cl, Br; 0 ≤ y ≤ 0.05) single crystals grown by the Bridgman method

Cherginets, V.L.; Rebrova, N.V.; Grippa, A.Yu.; Datsko, Yu.N.; Ponomarenko, Tamara V.; Pedash, V.Yu.; Kosinov, N. N.; Тарасов, В. А.; Zelenskaya, O. V.; Zenya, I.; Lopin, A. V.

doi:10.1016/j.matchemphys.2013.11.037

Cited by 36 publications

(21 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The scintillation decay time of the crystals increases with Eu 2+ concentration. Such behavior is also observed in other halides and it could be the result of self‐absorption of Eu 2+ .…”

Section: Resultsmentioning

confidence: 57%

“…As for the excitation spectrum of RbCa 0.995 Eu 0.005 Br 3 it is typical for Eu 2+ ‐doped halide scintillators possessing low‐symmetric crystalline lattices and include a broad band from 250 to 420 nm (figure , curve 1). The excitation and emission spectra show some overlapping, which is usually ascribed to the self‐absorption (the light in the crystal emitted by one Eu 2+ center could be absorbed and re‐emitted by another Eu 2+ center) which is typical for Eu 2+ ‐doped crystals .…”

Section: Resultsmentioning

confidence: 99%

“…There are several studies devoted to CsSr 1‐x Eu x X 3 and CsCa 1‐x Eu x X 3 (X = Cl, Br, I). The reported light yields are 18,000 ph/MeV for CsCa 0.9 Eu 0.1 Cl 3 , 28,000 ph/MeV for CsCa 0.92 Eu 0.08 Br 3 and 38,500 ph/MeV for CsCa 0.97 Eu 0.03 I 3 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Scintillation properties of crystals based on ternary bromides of calcium and alkali metals activated with europium

Rebrova

Grippa

Pushak

et al. 2017

Crystal Research and Technology

View full text Add to dashboard Cite

Single crystals of new scintillation materials ACaBr 3 :Eu 2+ (A = K, Rb) were grown using the Bridgman-Stockbarger method. The luminescence spectra of RbCa 1-x Eu x Br 3 crystals include a single band with a maximum which position shifts from 433 to 443 nm with the increase of mole fraction of Eu 2+ from 0.005 to 0.08. The decay of the scintillation pulse can be described using single component and the decay time rises towards concentration of Eu 2+ in crystals from 2.70 μs (x = 0.03) to 3.14 μs (x = 0.05). The relative light yield achieves 77 per cent vs. NaI:Tl for RbCa 0.92 Eu 0.08 Cl 3 sample and the energy resolution is 8.2%. Comparing with the K-based analogs RbCa 1-x Eu x Br 3 materials are more stable and they are considerably brighter scintillators than CsCa 1-x Eu x Br 3 .

show abstract

“…The scintillation decay time of the crystals increases with Eu 2+ concentration. Such behavior is also observed in other halides and it could be the result of self‐absorption of Eu 2+ .…”

Section: Resultsmentioning

confidence: 57%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Scintillation properties of crystals based on ternary bromides of calcium and alkali metals activated with europium

Rebrova

Grippa

Pushak

et al. 2017

Crystal Research and Technology

View full text Add to dashboard Cite

show abstract

“…Another example is the molecular compound [Eu(BH4)2(THF)2] reported by Marks et al 23 In contrast, there is only the corresponding chloride analogue CsSrCl3:Eu 2+ reported to show the respective 4f 6 5d 1 → 4f 7 emission transition at around 431 nm. 43,44 Since Rietveld analyses result in low chloride substitution for the here reported mixed anionic alkaline metal strontium borohydride chlorides the photoluminescence properties origin mainly from the borohydride ligands and, as will also argued below, the Clligands only have a negligible effect thereon. The maxima in the photoluminescence excitation spectra of these compounds are systematically redshifted from K (330 nm) over Rb (335 nm) to Cs (339 nm) and exhibit a broadened fine structure both at 4.2 K and room temperature (see Figure 4.…”

Section: Resultsmentioning

confidence: 59%

One Ion, Many Facets: Efficient, Structurally and Thermally Sensitive Luminescence of Eu²⁺ in Binary and Ternary Strontium Borohydride Chlorides

et al. 2019

View full text Add to dashboard Cite

The Eu 2+ -doped mixed alkaline metal strontium borohydride chlorides ASr(BH4)3-xClx (A = K, Rb, Cs) and Eu 2+ -doped strontium borohydride chloride Sr(BH4)2-xClx have been prepared by mechanochemical synthesis. Intense blue photoluminescence for Sr(BH4)2-xClx (λem= 457 nm) and cyan photoluminescence for the perovskite-type mixed alkaline metal strontium borohydride chlorides ASr(BH4)3-xClx (A = K, Rb, Cs) (λem = 490 nm) is already observable after short milling times. Temperature dependent luminescence measurements reveal an appreciable blue shift with increasing temperature for all ASr(BH4)3-xClx (A = K, Rb, Cs) until 500 K. This extremely large shift, caused by structural relaxation, as well as the vibrationally induced emission band broadening can serve as a sensitive response signal for temperature sensing, and this unique behavior has, to the best of our knowledge, not been reported in any Eu 2+ doped phosphor so far. Additionally, bright luminescence, high quantum efficiencies, and very low thermal quenching of these Eu 2+ -doped borohydrides show that such host materials could serve in solid state lighting applications. xClx:Eu 2+ (A = K, Rb, Cs) for the first time. All discussed ternary compounds show efficient cyan emission at room temperature as well as a strongly temperature-dependent shift of the emission energies. This unusually strong response of the luminescence properties of Eu 2+ with Chemistry of Materials 2019, 31, 8957-8968 https://doi.org/10.1021/acs.chemmater.9b03048regard to temperature changes may be interesting for potential applications in the field of thermometry. Experimental sectionSynthesis. Due to moisture and air sensitivity all compounds were handled in an argon-filled glove box. The mixed metal borohydrides ASr(BH4)3-xClx:Eu 2+ (A = K, Rb, Cs) were prepared via mechanochemical reaction of LiBH4 (Alfa Aesar, 95%), SrCl2 (Alfa Aesar, 99.995%), the corresponding alkaline borohydrides (KBH4, Alfa Aesar 98%; RbBH4 and CsBH4 prepared from Rb or Cs metal and NaBH4 in ethanol according to the procedure described in Ref 34) as well as EuH2 (2 mol% doping; synthesized via hydrogenation of europium metal in an autoclave made from hydrogen-resistant Böhler L718 alloy) in a Fritsch Pulverisette Premium Line 7 in a ZrO2 bowl with an overpressure valve. Sr(BH4)2-xClx:Eu 2+ was prepared via mechanochemical reaction of stoichiometric amounts of SrCl2, LiBH4 and 2 mol% EuH2. 10 ZrO2 balls with a diameter of 10 mm are used together with approximately 0.3 g of reactants. Caution! Overpressure may build up during milling via decomposition of the borohydrides. Reactants were milled during 19 cycles with 2 minutes of milling at 600 rpm followed by 3 minutes pauses to prevent heating of the samples. To increase crystallinity, the samples were annealed at 200 °C in fused silica ampoules for 2 days. Powder x-ray diffraction (XRD). For powder XRD analysis, a STOE STADI P diffractometer (Cu-Kα1 radiation, λ = 1.54051 Å (determined from a silicon standard)), Ge-(111)monochromator) including a DECTRIS Mythen...

show abstract

“…This also concerns optical halide single crystals widely used for different scientific and practical purposes. One of the most popular modern trends in materials science of scintillators consists in the change-over from Eu 2+ -doped single crystals of single ionic halides, e.g., BaI 2 :Eu 2+ [1], CaBr 2 :Eu 2+ [2] to more complex materials: both mixed compounds (CsBa 2 I 5 :Eu 2+ [3], CsSrCl 3 :Eu 2+ [4]) and solid solutions ({BaBr 2 + BaI 2 }:Eu 2+ [5], (CaBr 2 + CaI 2 ):Eu 2+ [6] etc. ).…”

Section: Introductionmentioning

confidence: 99%

On solubility of europium monoxide in melts of (NaBr + NaI) system at T = 973 K

Cherginets

Rebrova

Datsko

et al. 2015

The Journal of Chemical Thermodynamics

Self Cite

View full text Add to dashboard Cite

Scintillation properties of CsSrX3:Eu2+ (CsSr1−yEuyX3, X = Cl, Br; 0 ≤ y ≤ 0.05) single crystals grown by the Bridgman method

Cited by 36 publications

References 13 publications

Scintillation properties of crystals based on ternary bromides of calcium and alkali metals activated with europium

Scintillation properties of crystals based on ternary bromides of calcium and alkali metals activated with europium

One Ion, Many Facets: Efficient, Structurally and Thermally Sensitive Luminescence of Eu²⁺ in Binary and Ternary Strontium Borohydride Chlorides

On solubility of europium monoxide in melts of (NaBr + NaI) system at T = 973 K

Contact Info

Product

Resources

About

Scintillation properties of CsSrX3:Eu2+ (CsSr1−yEuyX3, X = Cl, Br; 0 ≤ y ≤ 0.05) single crystals grown by the Bridgman method

Cited by 36 publications

References 13 publications

Scintillation properties of crystals based on ternary bromides of calcium and alkali metals activated with europium

Scintillation properties of crystals based on ternary bromides of calcium and alkali metals activated with europium

One Ion, Many Facets: Efficient, Structurally and Thermally Sensitive Luminescence of Eu2+ in Binary and Ternary Strontium Borohydride Chlorides

On solubility of europium monoxide in melts of (NaBr + NaI) system at T = 973 K

Contact Info

Product

Resources

About

One Ion, Many Facets: Efficient, Structurally and Thermally Sensitive Luminescence of Eu²⁺ in Binary and Ternary Strontium Borohydride Chlorides