Growth and Properties of Novel Scintillator Crystals

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: 30 July 2025 | Viewed by 541

Special Issue Editors


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Guest Editor
Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Miyagi, Japan
Interests: single crystal; scintillator; piezoelectric material; thermoelectric material; crystal growth
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
New Industry Creation Hatchery Center (NICHe), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Miyagi, Japan
Interests: solid scintillation detectors; aluminum compounds; cerium; crystal growth from melt; gadolinium compounds; luminescence; lutetium compounds; photoluminescence; scintillation; scintillation counters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Scintillator single crystals have been developed for some applications using radiation detectors in medical, environmental and security fields to improve the sensitivity of radiation detection and spatial resolution. Novel radiation detectors have also been developed using scintillator single crystals. In recent years, growth methods of scintillator single crystals have been improved, and various novel scintillator crystals have been developed using these methods. In addition, the developed growth technique of bulk single crystals and shape-controlled single crystals has contributed to the mass production of scintillator single crystals and the development of novel radiation detectors. Self-organized eutectic scintillator crystals grown using unidirectional solidification and scintillator nanoparticle crystals have shown great scintillation properties.

Therefore, this Special Issue focuses on the crystal growth and scintillation properties of novel scintillator crystals, as well as on the crystal growth techniques of scintillator crystals.

Topics of interest include, but are not limited to, the following:

  • Novel scintillator crystals (oxide, fluoride, halide and others);
  • Eutectic scintillator crystals;
  • Nanoparticle scintillator crystals;
  • Shape-controlled scintillator crystals;
  • Growth techniques for bulk single crystals of scintillator materials;
  • Growth techniques for shape-controlled single crystals of scintillator materials;
  • Fabrication techniques for nanoparticle crystals of scintillator materials.

Dr. Yuui Yokota
Dr. Takahiko Horiai
Guest Editors

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Keywords

  • novel scintillator crystals
  • halide scintillator crystals
  • eutectic scintillator crystals
  • nanoparticle scintillator crystals
  • shape-controlled scintillator crystals
  • novel and modified growth method

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Published Papers (1 paper)

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Research

10 pages, 2660 KiB  
Article
Crystal Growth and Energy Transfer Study in Ce3+ and Pr3+ Co-Doped Lu2Si2O7
by Yuka Abe, Takahiko Horiai, Yuui Yokota, Masao Yoshino, Rikito Murakami, Takashi Hanada, Akihiro Yamaji, Hiroki Sato, Yuji Ohashi, Shunsuke Kurosawa, Kei Kamada and Akira Yoshikawa
Crystals 2025, 15(3), 202; https://doi.org/10.3390/cryst15030202 - 20 Feb 2025
Viewed by 354
Abstract
Ce-doped Lu2Si2O7 has a high density, high luminescence efficiency even at high temperatures, and a high effective atomic number, making it a promising candidate for use as a radiation detector in medical devices and resource exploration equipment. In [...] Read more.
Ce-doped Lu2Si2O7 has a high density, high luminescence efficiency even at high temperatures, and a high effective atomic number, making it a promising candidate for use as a radiation detector in medical devices and resource exploration equipment. In this study, we grow and characterize Pr3+ and Ce3+-doped Lu2Si2O7 single crystals by systematically varying the Ce3+ to Pr3+ ratio to further improve scintillation properties. The optical characterization results show a bidirectional energy transfer: from the Pr3+ 5d levels to the Ce3+ 5d levels and from the Ce3+ 5d levels to the Pr3+ 4f levels. Consistently with this result, the PL decay time of emission from the Pr3+ 5d–4f transition tends to become faster as the Ce3+/Pr3+ ratio increases, due to the energy transfer from the Pr3+ 5d levels to the Ce3+ 5d levels. Additionally, (Ce0.0022 Pr0.0016 Lu0.9962)2Si2O7 exhibits a high light yield comparable to Ce-doped Lu2Si2O7 and a slightly faster decay time than Ce-doped Lu2Si2O7. Full article
(This article belongs to the Special Issue Growth and Properties of Novel Scintillator Crystals)
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