TY - JOUR
T1 - Luminescence and scintillation properties of Ce3+-doped SiO2–Al2O3–BaF2–Gd2O3 glasses
AU - Chewpraditkul, Weerapong
AU - Pattanaboonmee, Nakarin
AU - Yawai, Nattasuda
AU - Chewpraditkul, Warut
AU - Lertloypanyachai, Prapon
AU - Sreebunpeng, Krittiya
AU - Yoshino, Masao
AU - Liu, Liwan
AU - Chen, Danping
N1 - Funding Information:
RL spectra of Ce:SABG glasses and BGO crystal as measured in similar conditions are displayed in Fig. 5. The Ce:SABG and BGO samples have the same size (6???6???1?mm3), so that the integrated intensity of RL spectra could give an estimate of the scintillation efficiency of Ce:SABG glasses compared to a BGO crystal and the values are summarized in Table 2. Apparently, all Ce:SABG glasses showed good scintillation efficiency higher than that of 30% of BGO obtained for our previously reported Ce-doped SiO2?B2O3?Al2O3?Gd2O3 glass [6]. High scintillation efficiency comparable to the BGO crystal obtained for a Ce:SABG10 glass in this work is higher than that of 87% of BGO reported for Ce -doped SiO2?B2O3?BaF2-Lu2O3?Gd2O3 glass [13]. The red shift of RL spectra with increasing Gd2O3 content in Ce:SABG glasses is also obtained in the same trend with the PL spectra, as mentioned above. A decrease of scintillation efficiency for higher Gd2O3 containing glasses is observed, attributing to self-absorption effect due to an enhanced overlap between the PL and PLE spectra as shown in Fig. 2, supported also by the low-energy shift of UV cut-off position (see Fig. 1).The authors acknowledge the financial support provided by King Mongkut's University of Technology Thonburi through the ?KMUTT 55th Anniversary Commemorative Fund?, the National Research Council of Thailand(NRCT no. 1948) and the National Natural Science Foundation of China (NSFC no. 51872308). M. Nikl is gratefully acknowledged for valuable discussion.
Funding Information:
The authors acknowledge the financial support provided by King Mongkut's University of Technology Thonburi through the “KMUTT 55th Anniversary Commemorative Fund”, the National Research Council of Thailand (NRCT no. 1948 ) and the National Natural Science Foundation of China (NSFC no. 51872308 ). M. Nikl is gratefully acknowledged for valuable discussion.
PY - 2019/12
Y1 - 2019/12
N2 - Ce3+-doped glasses with composition of (65-x)SiO2 − 20Al2O3 –15BaF2 -xGd2O3 (x = 5, 10, 15, 20 and 25) were synthesized under CO atmosphere by melt-quenching method. The photoluminescence (PL) emission due to Ce3+: 5d1 → 4f transition was red-shifted with increasing Gd2O3 content. The acceleration of PL decay was observed with increasing Gd2O3 content. The scintillation efficiency of about 100% of the Bi4Ge3O12 scintillator was obtained for a 10%Gd2O3 containing glass while a high light yield (LY) of 2050 photons/MeV and energy resolution of 15.8% at 662 keV γ rays was obtained for a 15%Gd2O3 containing glass. The integrating-time dependence of LY value and LY ratio (α/γ ratio) under excitation with α- and γ-rays were also measured.
AB - Ce3+-doped glasses with composition of (65-x)SiO2 − 20Al2O3 –15BaF2 -xGd2O3 (x = 5, 10, 15, 20 and 25) were synthesized under CO atmosphere by melt-quenching method. The photoluminescence (PL) emission due to Ce3+: 5d1 → 4f transition was red-shifted with increasing Gd2O3 content. The acceleration of PL decay was observed with increasing Gd2O3 content. The scintillation efficiency of about 100% of the Bi4Ge3O12 scintillator was obtained for a 10%Gd2O3 containing glass while a high light yield (LY) of 2050 photons/MeV and energy resolution of 15.8% at 662 keV γ rays was obtained for a 15%Gd2O3 containing glass. The integrating-time dependence of LY value and LY ratio (α/γ ratio) under excitation with α- and γ-rays were also measured.
KW - Ce
KW - Gd
KW - Light yield
KW - Luminescence
KW - Scintillating glass
UR - http://www.scopus.com/inward/record.url?scp=85074497981&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85074497981&partnerID=8YFLogxK
U2 - 10.1016/j.optmat.2019.109468
DO - 10.1016/j.optmat.2019.109468
M3 - Article
AN - SCOPUS:85074497981
VL - 98
JO - Optical Materials
JF - Optical Materials
SN - 0925-3467
M1 - 109468
ER -