Rare-Earth Luminescent Materials

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Materials".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 508

Special Issue Editor

College of Physics, Sichuan University, Chengdu 610064, China
Interests: luminescent materials; transparent ceramics; radiation shielding and detection; optical thermometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rare-earth ions, featuring unique 4f electronic configurations, exhibit exceptional luminescent properties, including sharp emission lines, long lifetimes, and tunable emission wavelengths spanning the ultraviolet, visible, and near-infrared (NIR) spectral regions. These ions, when incorporated into various hosts, enable the design of advanced luminescent materials with tailored optical properties. Recent contributions have demonstrated the significant potential of rare-earth-doped luminescent materials in a wide range of applications, covering solid-state lighting, high-resolution displays, optical thermometry, bioimaging, and anti-counterfeiting. These materials are also increasingly explored for their role in next-generation optoelectronic devices, such as photovoltaic cells, laser systems, and advanced optical sensors.

This Special Issue, entitled “Rare-Earth Luminescent Materials”, focuses on the latest advancements in rare-earth-based luminescent materials, including, but not limited to, the fundamental mechanisms of luminescence, novel synthesis techniques, and the optimization of material properties for functional applications.

Dr. Kailei Lu
Guest Editor

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Keywords

  • rare-earth luminescence
  • phosphors
  • material synthesis
  • crystal structure
  • energy transfer processes
  • spectroscopic properties

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Published Papers (1 paper)

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Research

21 pages, 6939 KB  
Article
Facile Reversible Eu2+/Eu3+ Redox in Y2SiO5 via Spark Plasma Sintering: Dwell Time-Dependent Luminescence Tuning
by Fernando Juárez-López, Merlina Angélica Navarro-Villanueva, Rubén Cuamatzi-Meléndez, Margarita García-Hernández, María José Soto-Miranda and Angel de Jesús Morales-Ramírez
Inorganics 2025, 13(10), 325; https://doi.org/10.3390/inorganics13100325 - 30 Sep 2025
Viewed by 257
Abstract
The present study investigates the luminescent behaviour of sol–gel derived Y2SiO5 powders doped with Eu3+ ions, subjected to spark plasma sintering. The sintering process induces the partial reduction of Eu3+ to Eu2+, and the phenomenon is [...] Read more.
The present study investigates the luminescent behaviour of sol–gel derived Y2SiO5 powders doped with Eu3+ ions, subjected to spark plasma sintering. The sintering process induces the partial reduction of Eu3+ to Eu2+, and the phenomenon is strongly dependent on the holding time within the SPS chamber. The luminescent properties are tunable via the initial Eu concentration, holding time and excitation wavelength, resulting in a wide range of emission colours from red (Eu3+) at 220 nm excitation to blue (Eu2+) at 365 nm, and mixed colours at 257 nm. Moreover, the Eu3+/Eu2+ redox process is reversible. Overall, the results demonstrate that SPS conditions can be exploited to modulate the valence state of luminescent centres, which is reversible by oxidation under ambient conditions, enabling controlled modulation of the optical properties. Full article
(This article belongs to the Special Issue Rare-Earth Luminescent Materials)
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