EPR and optical studies of erbium-doped β-PbF2 single-crystals and nanocrystals in transparent glass–ceramics

文献情報

出版日 2007-08-30

DOI 10.1039/B706735F

インパクトファクター 3.676

著者

Géraldine Dantelle, Michel Mortier, Daniel Vivien

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要旨

β-PbF2 single-crystals and nanocrystals in transparent glass–ceramics doped with ErF3 have been synthesized and studied with two complementary techniques: electron paramagnetic resonance (EPR) and optical spectroscopy (absorption, selective excitation, fluorescence). A comparative study shows that, in both single-crystals and glass–ceramics, Er3+ ions occupy the same types of sites, leading to similar optical properties. An EPR investigation demonstrates that, in these materials, part of the Er3+ ions occupy cubic symmetry sites. For these ions, we determine the crystal field splitting of the ground state 4I15/2 and the symmetry of its sublevels. We also provide evidence for the presence of another type of Er3+ ions, not detectable by EPR but evidenced by optical spectroscopy. We clearly show that this Er3+, which gives rise to up-conversion luminescence, corresponds to clusters associating Er3+ and F− ions. In the single-crystals, the proportion of these two types of erbium ions is estimated. It strongly depends on the doping rate of the β-PbF2 crystals.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

EPR and optical studies of erbium-doped β-PbF2 single-crystals and nanocrystals in transparent glass–ceramics

文献情報

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