Emerging Trends in Rare-Earth Doped Material for Photonics

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: 20 August 2026 | Viewed by 515

Special Issue Editor


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Guest Editor
Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Interests: optical materials; laser materials and devices; nanomaterials; optical glass; optical fiber; rare-earth-doped materials

Special Issue Information

Dear Colleagues,

Rare-earth-doped materials are pivotal in advancing photonic technologies, offering unparalleled performance in lasers, amplifiers, sensors, and lighting systems. The following Special Issue, edited by Prof. Jiangbo She et al., will highlight groundbreaking research on the synthesis, characterization, and application of rare-earth-doped materials in photonics. Topics of interest include, but are not limited to, the following: 

  • Novel synthesis techniques for rare-earth-doped crystals, glasses, and nanomaterials;
  • Energy-efficient phosphors for LED and display technologies;
  • Rare-earth-doped fiber amplifiers and lasers for telecommunications and medical applications;
  • Ultrafast spectroscopy and dynamics of rare-earth ions in photonic matrices;
  • Emerging applications in quantum technologies, biosensing, and environmental monitoring;
  • Machine learning-guided design of rare-earth materials for tailored photonic properties.

For this Special Issue, we welcome original research articles, reviews, and perspectives that explore both fundamental advances and practical innovations. Submissions addressing scalability, sustainability, and the integration of rare-earth materials into next-generation photonic systems are strongly encouraged. 

Dr. Jiangbo She
Guest Editor

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Keywords

  • optical amplifiers
  • luminescent phosphors
  • photonic lasers
  • ultrafast spectroscopy
  • perovskite materials

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Published Papers (1 paper)

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Research

14 pages, 1662 KB  
Article
Characterization of Nanocrystals of Eu-Doped GaN Powders Obtained via Pyrolysis, Followed by Their Nitridation
by Erick Gastellóu, Rafael García, Ana M. Herrera, Antonio Ramos, Godofredo García, Gustavo A. Hirata, José A. Luna, Roberto C. Carrillo, Jorge A. Rodríguez, Roman Romano, Yani D. Ramírez, Francisco Brown and Antonio Coyopol
Photonics 2025, 12(10), 982; https://doi.org/10.3390/photonics12100982 - 2 Oct 2025
Viewed by 266
Abstract
Nanocrystals of Eu-doped GaN powders are produced via pyrolysis of a viscous compound made from europium and gallium nitrates. Furthermore, carbohydrazide is used as a fuel and toluene as a solvent; subsequently, a crucial nitridation process is carried out at 1000 °C for [...] Read more.
Nanocrystals of Eu-doped GaN powders are produced via pyrolysis of a viscous compound made from europium and gallium nitrates. Furthermore, carbohydrazide is used as a fuel and toluene as a solvent; subsequently, a crucial nitridation process is carried out at 1000 °C for one hour. A slight shift of 0.04 degrees toward larger angles was observed for the X-ray diffraction patterns in the Eu-doped GaN powders regarding the undoped GaN powders, while Raman scattering also displayed a slight shift of 10.03 cm−1 toward lower frequencies regarding the undoped GaN powders for the vibration mode, E2(H), in both cases indicating the incorporation of europium atoms into the GaN crystal lattice. A scanning electron microscope micrograph demonstrated a surface morphology for the Eu-doped GaN with a shape similar to elongated platelets with a size of 3.77 µm in length. Energy-dispersive spectroscopy and X-ray photoelectron spectroscopy studies demonstrated the europium elemental contribution in the GaN. The X-ray photoelectron spectroscopy spectrum for gallium demonstrated the binding energies for Ga 2P3/2, Ga 2P1/2, and Eu 3d5/2, which could indicate the incorporation of europium into the GaN and the bonding between gallium and europium atoms. The transmission electron microscope micrograph showed the presence of nanocrystals with an average size of 9.03 nm in length. The photoluminescence spectrum showed the main Eu3+ transition at 2.02 eV (611.69 nm) for europium emission energy, corresponding to the 5D07F2 transition of the f shell, which is known as a laser transition. Full article
(This article belongs to the Special Issue Emerging Trends in Rare-Earth Doped Material for Photonics)
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