Structural, optical, and spectroscopic properties of Pr3+-doped calcium boroaluminate glasses

IF 6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2026-10-01 Epub Date: 2026-07-24 DOI:10.1016/j.ceramint.2026.07.325

B.G. de Lima Moura, O.C. Silva Neto, A.M.O. Lima, T.A. Lodi, A.S.S. de Camargo, A. Steimacher, M.J. Barboza

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Abstract

Calcium boroaluminate (CaBAl) glasses doped with Pr₆O₁₁ (0.25–2.0 wt%) were synthesized by melt-quenching to investigate the influence of Pr³⁺ incorporation on their structural and optical properties. XRD confirmed the fully amorphous nature of all compositions, while FTIR analysis indicated that Pr³⁺ incorporation does not significantly alter the glass network connectivity. Optical absorption revealed characteristic 4f–4f transitions of Pr³⁺ ions, with efficient excitation at 444 nm (³H₄→³P₂). Intense orange emission centered at 601 nm (¹D₂→³H₄) was observed, with maximum intensity at 1.5 wt% Pr₆O₁₁. Higher concentrations led to concentration quenching accompanied by a reduction in lifetime from 27 to 15 μs. The correlation between lifetime shortening, reduced interionic distance, and spectral overlap confirms the role of cross-relaxation and resonant energy transfer mechanisms. These results highlight Pr³⁺-doped CaBAl glasses as promising candidates for orange-emitting photonic devices. The combined structural–spectroscopic approach adopted here provides deeper insight into concentration-dependent energy transfer processes in Pr³⁺-doped borate-based glasses.

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掺Pr3+硼铝酸钙玻璃的结构、光学和光谱特性

采用熔融淬火法制备了掺Pr6O11（0.25 ~ 2.0 wt%）的硼铝酸钙（CaBAl）玻璃，研究了Pr3+掺入对其结构和光学性能的影响。XRD证实了所有成分的完全无定形性质，而FTIR分析表明Pr3+的掺入并没有显著改变玻璃网络的连通性。光学吸收显示Pr3+离子的4f-4f跃迁特征，在444 nm （3H4→3P2）处有效激发。观察到以601 nm （1D2→3H4）为中心的强烈橙色发射，最大强度为1.5 wt% Pr6O11。较高的浓度导致浓度猝灭，寿命从27 μs降至15 μs。寿命缩短、离子间距离减小和光谱重叠之间的相关性证实了交叉弛豫和共振能量转移机制的作用。这些结果突出了Pr3+掺杂的CaBAl玻璃作为橙色发射光子器件的有希望的候选者。本文采用的结合结构-光谱方法可以更深入地了解Pr3+掺杂硼酸盐基玻璃中随浓度变化的能量转移过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.