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Materials for Luminescent Detectors and Transformers of Ionizing Radiation (Second Volume)

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1540

Special Issue Editors


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Guest Editor
Institute of Physics, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland
Interests: scintillators; development of luminescent materials in the single crystalline and crystals forms; energy transfer proceses in scintillators; defects and dopant as emission and trapping centers in dielectrics
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Guest Editor
Department of Production Engineering Management, University of Bydgoszcz, Unii Lubelskiej 4c, 85059 Bydgoszcz, Poland
Interests: CVD diamond; thin nano- and microcrystalline films; diamond single crystals; optical spectroscopy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to invite you to publish your latest results in this Special Issue of Materials, "Materials for Luminescent Detectors and Transformers of Ionizing Radiation".

Significant achievements have been made in recent years in the synthesis of new luminescent compounds in different crystalline forms. As a result, engineers and designers have easy access to these materials to create ionizing radiation detectors for use in different branches of industry and science. These new materials offer solutions that can improve the performance of respective devices and enable completely new approaches to challenging problems, especially in medical diagnostics.

This Special Issue of Materials will be a forum for the presentation of the latest developments in basic and applied research in the fields of radioluminescence, the processes of energy transfer and storage in solids, the physics and chemistry of luminescent phosphor and scintillation materials, and their related applications.

Prof. Dr. Yuriy Zorenko
Prof. Dr. Kazimierz Fabisiak
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • luminescent materials
  • radiation detectors and transformers of ionizing radiation
  • crystals
  • film
  • nanophosphors and nanocomposites

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Published Papers (1 paper)

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Research

12 pages, 5202 KiB  
Article
Ce3+ Doped Al2O3-YAG Eutectic as an Efficient Light Converter for White LEDs
by Anna Shakhno, Tetiana Zorenko, Sandra Witkiewicz-Łukaszek, Mieczysław Cieszko, Zbigniew Szczepański, Oleh Vovk, Sergii Nizhankovskyi, Yuriy Siryk and Yuriy Zorenko
Materials 2023, 16(7), 2701; https://doi.org/10.3390/ma16072701 - 28 Mar 2023
Cited by 2 | Viewed by 1274
Abstract
Ce3+ doped Al2O3-YAG eutectics were successfully grown by the horizontal directional crystallization method. The crystallization rate of eutectic growth was changed in the 1–7.5 mm/h range at a growth temperature of 1835 ℃. The microstructure of eutectic samples [...] Read more.
Ce3+ doped Al2O3-YAG eutectics were successfully grown by the horizontal directional crystallization method. The crystallization rate of eutectic growth was changed in the 1–7.5 mm/h range at a growth temperature of 1835 ℃. The microstructure of eutectic samples was investigated using scanning electron microscopy and X-ray microtomography. The intrinsic morphology of eutectic represents the stripe-like channel structure with a random distribution of the garnet Y3Al5O12 (YAG) and Al2O3 (sapphire) phases. The content of these phases in the stripes changes in the 52.9–55.3% and 46.1–47.1% ratios, respectively, depending on the growth rate of the crystallization of the eutectic samples. The luminescent properties of the eutectic demonstrated the dominant Ce3+ luminescence in the garnet phase. The luminescence of the Ce3+ ions in Al2O3 has also been observed and the effective energy transfer processes between Ce3+ ions in the Al2O3 and YAG garnet phases were revealed under high-energy excitation and excitation in the UV Ce3+ absorption bands of sapphire. The phosphor conversion properties and the color characteristics (Al2O3-YAG):Ce eutectic with different thicknesses were investigated under excitation by a blue LED. We have also tested the prototypes of white LEDs, prepared using a blue 450 nm LED chip and (Al2O3-YAG):Ce eutectic photoconverters with 0.15 to 1 mm thicknesses. The results of the tests are promising and can be used for the creation of photoconverters for high-power white LEDs. Full article
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