Photoluminescence and Judd-Ofelt studies on Pr3+ activated CdO-B2O3 invert glasses: Advanced reddish solutions for crop illumination

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.446

W. Romero-Romo , A.N. Meza-Rocha , O. Soriano-Romero , R. Lozada-Morales , V. Vargas García , B. Flores Desirena , S. Carmona-Téllez

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引用次数: 0

Abstract

Synthesis and characterization of Pr³⁺-activated CdO-B₂O₃ invert glasses are reported. The glasses have a starting composition of 80 % CdO and 20 % B₂O₃. X-ray diffractograms reveal that the glasses remain amorphous in the doping range. Optical direct band gap values of 3.18 ± 0.03 eV indicate suitable transparency for Pr³⁺-related transitions. The emission spectra under 446 nm excitation show Pr³⁺ transitions centered at 487, 527, 603, 645, 706, and 729 nm, being the emission at 603 nm (³P₀ → ³H₆ + ¹D₂ → ³H₄) the most intense. Notably, the ³P₀ → ³H₆ + ¹D₂ → ³H₄ emissions overlap with the absorption of chlorophyll a, suggesting potential applications for reddish crop illumination. The highest emission intensity was observed at 0.6 mol% Pr³⁺. At higher Pr³⁺ concentrations, the emission is quenched due to an increase in the cross-relaxation rate. The Judd-Ofelt parameters, obtained via least-squares fitting from theoretical and experimental oscillator strengths for the optimal emitting invert glass sample (0.6 mol% Pr³⁺), show a trend of Ω₂ > Ω₆ > Ω₄.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.