Inﬂuence of La2O3 on the structural and luminescence properties in Er3+/Ho3+ co-doped TeO2-BaF2-ZnF2 glass

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.2024.12.479

Yumeng Ban , Zelin He , Fengjie Qin, Dechun Zhou, Yuxuan Cong, Tong Wu, Yuxiao Wu

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引用次数: 0

Abstract

In this study, Er³⁺/Ho³⁺ co-doped fluorotellurite glass (TeO₂-BaF₂-ZnF₂) were prepared by high-temperature melting method. With the introduction of the network modifier La₂O₃, the optical active center (Er³⁺/Ho³⁺) was improved, leading to the enhancement of 2.7 μm emission. Raman spectra and DSC curve were utilized to evaluate the structural of glass and thermal stability of the glass. La³⁺ ions increase the thermal stability (ΔT = 147 °C) of the glass, accelerates the transition from [TeO₄] to [TeO₃₊₁]/[TeO₃] in the glass. Under 808 nm excitation, the maximum fluorescence intensity of 2.7 μm at the La₂O₃ concentration of 6 mol%. La³⁺ ions lead to a more compact network structure. Meanwhile, the luminescent center coordination environment is improved, thus reducing the energy loss of ion resonance. The fluorescence intensity of 2.7 μm is enhanced. In addition, a large emission cross-section (8.29 × 10⁻²¹ cm⁻²) and gain coefficient (7.43 cm⁻¹) were obtained. The forward energy transfer coefficient C_D-A (Er³⁺:⁴I_13/2→Ho³⁺:⁵I₇) in the glass is 2.39 × 10⁻⁴⁰ cm⁶/s. The results show that the introduction of La₂O₃ improves the luminescence efficiency of this system of glass in the ∼2.7 μm band. Er³⁺/Ho³⁺ co-doped fluorotellurite glass (TeO₂-BaF₂-ZnF₂) glass modified by La₂O₃ is an ideal gain medium material for mid-infrared fiber lasers.

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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.