S&M Young Researcher Paper Award 2020
Recipients: Ding Jiao, Zao Ni, Jiachou Wang, and Xinxin Li [Winner's comments]
Paper: High Fill Factor Array of Piezoelectric Micromachined
Ultrasonic Transducers with Large Quality Factor

S&M Young Researcher Paper Award 2021
Award Criteria
Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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Comparative Study of Optical and Scintillation Properties of Tm-doped La2Si2O7 and Lu2Si2O7 Single Crystals

Prom Kantuptim, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida

(Received October 13, 2021; Accepted November 30, 2021)

Keywords: lanthanum pyrosilicate, lutetium pyrosilicate, thulium, photoluminescence, pulse height

Lanthanum and lutetium pyrosilicate (La2Si2O7 and Lu2Si2O7, respectively) single crystals with a Tm doping concentration of 2.0% were successfully synthesized by the floating-zone method. X-ray diffraction patterns showed a single phase in each compound without the impurity phase. Both their photoluminescence (PL) and scintillation properties were systematically determined in this study, including PL emission, PL decay time, X-ray-induced scintillation spectra, X-ray-induced scintillation decay time, afterglow level, and pulse height spectra. The emission from Tm3+ 4f-4f transition was observed on both samples as shown by PL emission as well as X-ray-induced scintillation spectra. Under 137Cs 662 keV γ-ray irradiation, their scintillation light yields were 2,340 ph/MeV for Tm-doped Lu2Si2O7 and 1,440 ph/MeV for Tm-doped La2Si2O7.

Corresponding author: Prom Kantuptim




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