Advances in Luminescent Materials

A special issue of Ceramics (ISSN 2571-6131).

Deadline for manuscript submissions: closed (31 July 2019) | Viewed by 3768

Special Issue Editor


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Guest Editor
Department of Mechanical and Aerospace Engineering and Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093-0411, USA
Interests: structure/properties of biological materials; impact resistance; bone models; bioinspired designs; 3D printing; luminescence; solid-state lighting

Special Issue Information

Dear Colleagues,

Luminescence in inorganic materials arises from excitation from an external energy source and from biochemical and chemical changes or reactions. This Special Issue covers theoretical and experimental aspects of the luminescence phenomena in insulators, semiconductors, disordered, and amorphous materials. Luminescent materials have wide applications: Solid-state lighting, detectors, imaging analysis, display devices, such as field emission, plasma, and electroluminescent, biomarkers, medical diagnostics and photodynamic therapy, amplifiers, lasers, security labelling, and energy conversion. Luminescent centers, energy transfer and migration, excited state dynamics, collective phenomena, and spectroscopic methods and analyses are topic areas. The challenge to develop new compounds along with novel synthesis methods to form nano- to single-crystal compositions and methods to characterize the luminescence phenomena are included. Progress on phosphors, scintillators, up-conversion materials, sensor, and imaging materials are covered.

Prof. Dr. Joanna McKittrick
Guest Editor

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Published Papers (1 paper)

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Research

11 pages, 6671 KiB  
Article
Usability of Cr-Doped Alumina in Dosimetry
by Ernests Einbergs, Aleksejs Zolotarjovs, Ivita Bite, Katrina Laganovska, Krisjanis Auzins, Krisjanis Smits and Laima Trinkler
Ceramics 2019, 2(3), 525-535; https://doi.org/10.3390/ceramics2030040 - 2 Sep 2019
Cited by 8 | Viewed by 3407
Abstract
Dosimetry is a widespread material science field dealing with detection and quantification of ionizing radiation using electronic processes in materials. One of the main aspects that determines the performance of dosimeters is the type of defects the material contains. Crystalline lattice imperfections are [...] Read more.
Dosimetry is a widespread material science field dealing with detection and quantification of ionizing radiation using electronic processes in materials. One of the main aspects that determines the performance of dosimeters is the type of defects the material contains. Crystalline lattice imperfections are formed around impurity ions, which may have a smaller or larger size, or different oxidation states compared to host ions. In this study, we show what effects Cr impurities have on the luminescent properties of alumina. Porous Al 2 O 3 : Cr microceramics synthesized using the sol-gel method showed a higher thermoluminescence response than a single crystal ruby. We have found that Cr 2 O 3 concentration of 0.2 wt% was optimal; it yielded the highest X-ray luminescence and thermostimulated luminescence readout of all studied additive concentrations added to alumina during synthesis. Our results show that Cr doped alumina could potentially be used as a promising new material for dosimetry of ionizing radiation. Full article
(This article belongs to the Special Issue Advances in Luminescent Materials)
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