来源：ACS PublicationsAmong rare-earth ions, Dy3+ uniquely enables intrinsic white-light emission and is therefore considered a promising activator for solid-state lighting. However, its parity-forbidden 4f–4f transitions lead to intrinsically weak absorption and limited emission intensity. Ce3+ was identified as an efficient sensitizer in the host LiSrY2(BO3)3 (LSYB) to enhance Dy3+ emission through energy transfer. A series of Ce3+-singly doped, Dy3+-singly doped, and Ce3+/Dy3+ codoped phosphors were successfully synthesized via a high-temperature solid-state reaction. Under 347 nm excitation, ...
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2026
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来源：ACS PublicationsThe heteroanionic rare-earth germanide oxide Sm26.25Ge22.75O5 was obtained by arc melting. The crystal structure determined by single-crystal X-ray diffraction (space group P4/nmm, a = 14.9838(2), c = 10.5353(1) Å) features [Sm6O] octahedra and capped [Sm8Ge] prisms that are condensed to Sm30Ge4O5 superclusters. These clusters form an interpenetrating framework with polyanionic Ge chains. Chemical bonding analysis reveals the substantial role of oxygen in stabilizing the structure: in the hypothetical oxygen-free compound, significant electron localization appears at th...
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2026
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来源：ACS PublicationsUnderstanding and modeling energy transfer mechanisms in rare-earth-doped nanomaterials are essential for advancing luminescent technologies used in bioimaging, optical thermometry, and solid-state lasers. In this work, we investigate the photoluminescence dynamics of Yb3+ and Er3+ ions in Y2O3 nanoparticles over a wide concentration range (0.5–17%), using both direct and up-conversion excitation. Luminescence decays of green, red, and near-infrared transitions were measured and analyzed using a single rate equation model incorporating radiative and non-radiative processes, ...
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2026
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来源：ACS PublicationsCuprous oxide semiconductors have been growing in research interest because of their promising optical and catalytic properties for solar energy conversion. While much recent research has focused on binary and ternary cuprous oxides, the more structurally complex quaternary and higher systems remain significantly less explored. Crystal growth in the cuprous rare-earth (RE) molybdate system has been investigated by using high-temperature and arc-melting synthesis techniques. Prior studies show the formation of two closely related compounds in these systems, occurring as eithe...
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2026
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