Composition engineering in cerium-doped (Lu,Gd)3(Ga,Al) 5O12 single-crystal scintillators

Kei Kamada; Takanori Endo; Kousuke Tsutumi; Takayuki Yanagida; Yutaka Fujimoto; Akihiro Fukabori; Akira Yoshikawa; Jan Pejchal; Martin Nikl

doi:10.1021/cg200694a

Composition engineering in cerium-doped (Lu,Gd)₃(Ga,Al) ₅O₁₂ single-crystal scintillators

Kei Kamada, Takanori Endo, Kousuke Tsutumi, Takayuki Yanagida, Yutaka Fujimoto, Akihiro Fukabori, Akira Yoshikawa, Jan Pejchal, Martin Nikl

Research output: Contribution to journal › Article › peer-review

391 Citations (Scopus)

Abstract

The Ce-doped (Lu_yGd_1-x)₃(Ga _y,Al_1-y)₅O₁₂ single crystals were grown by the micropulling down method. Their structure and chemical composition were checked by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) techniques. Optical, luminescent, and scintillation characteristics were measured by the methods of time-resolved luminescence spectroscopy, including the light yield and scintillation decay. Balanced Gd and Ga admixture into the Lu₃Al₅O₁₂ structure provided an excellent scintillator where the effect of shallow traps was suppressed, the spectrally corrected light yield value exceeded 40 000 photons/MeV, and scintillation decay was dominated by a 53 ns decay time value which is close to that of Ce ³⁺ photoluminescence decay. This study provides an excellent example of a combinatorial approach where targeted single-crystal compositions are obtained by a flexible, time saving, and cost-effective crystal growth technique.

Original language	English
Pages (from-to)	4484-4490
Number of pages	7
Journal	Crystal Growth and Design
Volume	11
Issue number	10
DOIs	https://doi.org/10.1021/cg200694a
Publication status	Published - 2011 Oct 5

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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Composition engineering in cerium-doped (Lu,Gd)₃(Ga,Al) ₅O₁₂ single-crystal scintillators. / Kamada, Kei; Endo, Takanori; Tsutumi, Kousuke; Yanagida, Takayuki; Fujimoto, Yutaka; Fukabori, Akihiro; Yoshikawa, Akira; Pejchal, Jan; Nikl, Martin.

In: Crystal Growth and Design, Vol. 11, No. 10, 05.10.2011, p. 4484-4490.

Research output: Contribution to journal › Article › peer-review

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abstract = "The Ce-doped (LuyGd1-x)3(Ga y,Al1-y)5O12 single crystals were grown by the micropulling down method. Their structure and chemical composition were checked by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) techniques. Optical, luminescent, and scintillation characteristics were measured by the methods of time-resolved luminescence spectroscopy, including the light yield and scintillation decay. Balanced Gd and Ga admixture into the Lu3Al5O12 structure provided an excellent scintillator where the effect of shallow traps was suppressed, the spectrally corrected light yield value exceeded 40 000 photons/MeV, and scintillation decay was dominated by a 53 ns decay time value which is close to that of Ce 3+ photoluminescence decay. This study provides an excellent example of a combinatorial approach where targeted single-crystal compositions are obtained by a flexible, time saving, and cost-effective crystal growth technique.",

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AU - Yanagida, Takayuki

AU - Fujimoto, Yutaka

AU - Fukabori, Akihiro

AU - Yoshikawa, Akira

AU - Pejchal, Jan

AU - Nikl, Martin

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N2 - The Ce-doped (LuyGd1-x)3(Ga y,Al1-y)5O12 single crystals were grown by the micropulling down method. Their structure and chemical composition were checked by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) techniques. Optical, luminescent, and scintillation characteristics were measured by the methods of time-resolved luminescence spectroscopy, including the light yield and scintillation decay. Balanced Gd and Ga admixture into the Lu3Al5O12 structure provided an excellent scintillator where the effect of shallow traps was suppressed, the spectrally corrected light yield value exceeded 40 000 photons/MeV, and scintillation decay was dominated by a 53 ns decay time value which is close to that of Ce 3+ photoluminescence decay. This study provides an excellent example of a combinatorial approach where targeted single-crystal compositions are obtained by a flexible, time saving, and cost-effective crystal growth technique.

AB - The Ce-doped (LuyGd1-x)3(Ga y,Al1-y)5O12 single crystals were grown by the micropulling down method. Their structure and chemical composition were checked by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) techniques. Optical, luminescent, and scintillation characteristics were measured by the methods of time-resolved luminescence spectroscopy, including the light yield and scintillation decay. Balanced Gd and Ga admixture into the Lu3Al5O12 structure provided an excellent scintillator where the effect of shallow traps was suppressed, the spectrally corrected light yield value exceeded 40 000 photons/MeV, and scintillation decay was dominated by a 53 ns decay time value which is close to that of Ce 3+ photoluminescence decay. This study provides an excellent example of a combinatorial approach where targeted single-crystal compositions are obtained by a flexible, time saving, and cost-effective crystal growth technique.

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Composition engineering in cerium-doped (Lu,Gd)₃(Ga,Al) ₅O₁₂ single-crystal scintillators

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