Effects of Sc3+ admixture on luminescence and scintillation properties of
Ce3+-doped Lu2Y(Al5-xScx)O12 (x = 1, 1.5, 2) garnet single-crystalline films
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Warut Chewpraditkul, Kriangkrai Wantong, Weerapong Chewpraditkul, Nakarin Pattanaboonmee, Romana Kucerkova, Alena Beitlerova, Martin Nikl, Dita Strachotova, Miroslav Kucera
ผู้เผยแพร่: Elsevier
ปีที่เผยแพร่ (ค.ศ.): 2023
Volume number: 145
หน้าแรก: 114417
นอก: 0925-3467
eISSN: 1873-1252
URL: https://www.sciencedirect.com/science/article/abs/pii/S0925346723009898?via%3Dihub
ภาษา: English-United States (EN-US)
บทคัดย่อ
Effects of Sc3+ admixture on luminescence and scintillation properties were studied in Ce3+ - doped Lu2Y(Al5-
xScx)O12 (x = 1, 1.5, 2) garnet single-crystalline films grown by the isothermal liquid phase epitaxy technique.
The Ce3+ photoluminescence (PL) was slightly blue shifted with increasing Sc content due to a decrease in crystal
field splitting of the Ce3+ 5d levels. In addition, the thermal activation energy of PL quenching, estimated from
the temperature dependence of PL decay times, decreased with increasing Sc content. Lu2YAl4ScO12:Ce exhibited
the highest light yield (LY) value of 420 photons/MeV at 5.5 MeV α particles along with a fast scintillation decay
time constant (τe) of 17.4 ns. At room temperature, the decrease of LY value with increasing Sc content could be
attributed to the thermal ionization process.
คำสำคัญ
Luminescence, Scintillation