TY - JOUR
T1 - Composition engineering in cerium-doped (Lu,Gd)3(Ga,Al) 5O12 single-crystal scintillators
AU - Kamada, Kei
AU - Endo, Takanori
AU - Tsutumi, Kousuke
AU - Yanagida, Takayuki
AU - Fujimoto, Yutaka
AU - Fukabori, Akihiro
AU - Yoshikawa, Akira
AU - Pejchal, Jan
AU - Nikl, Martin
PY - 2011/10/5
Y1 - 2011/10/5
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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U2 - 10.1021/cg200694a
DO - 10.1021/cg200694a
M3 - Article
AN - SCOPUS:80053468595
VL - 11
SP - 4484
EP - 4490
JO - Crystal Growth and Design
JF - Crystal Growth and Design
SN - 1528-7483
IS - 10
ER -