过碱性钠铝硅酸盐玻璃的铁依赖光学性质：拉曼光致发光联合研究

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-05-15 DOI:10.1016/j.optmat.2025.117161

Michele Cassetta , Anna Safonova , Gino Mariotto , Nicola Daldosso , Shujie You , Pawan Kumar , Alberto Vomiero , Mohamed Yousri Ben Zaied , Mongi Bouaicha , Francesco Enrichi

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引用次数: 0

摘要

本文研究了铁对过碱性钠铝硅酸盐玻璃（NASF）光学性能的影响，重点研究了玻璃结构与光学性能之间的相互作用。Fe掺杂显著影响了玻璃网络，改变了其结构连通性和光学性质。拉曼光谱显示，Fe通过增加非桥氧（NBOs）来改变玻璃结构，降低网络连通性。最高FeOtot浓度为8.2 at。%，更多的聚合结构重组发生由于铁的自我补偿。光学分析表明，铁的掺入增加了光吸收，并使吸收边缘向更高波长移动。Tauc图计算表明，光学带隙从4.0 eV减小到3.2 eV，而Urbach能量表明结构无序度增加。观察到与Fe3+能级相关的光致发光（PL）激发和发射，在700 nm处有一个宽的红色发射峰，随着Fe浓度的增加而降低，这与更高的缺陷和聚类有关。详细的寿命分析表明，由于非辐射复合和淬火，长尾持续时间为毫秒级，也随着铁含量的减少而减少。

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Fe-dependent optical properties of peralkaline soda aluminosilicate glasses: a combined Raman and photoluminescence study

This study investigates the influence of iron on the optical properties of peralkaline soda aluminosilicate glasses (NASF), focusing on the interplay between glass structure and optical behavior. Fe doping significantly affects the glass network, altering both its structural connectivity and optical properties. Raman spectroscopy reveals that Fe modifies the glass structure by increasing non-bridging oxygens (NBOs), reducing network connectivity. For the highest FeO_tot concentration of 8.2 at.%, a more polymerized structural reorganization occurs due to iron self-compensation. Optical analysis shows that Fe incorporation increases the optical absorption and shifts the absorption edge to higher wavelengths. Tauc plot calculations reveal a decrease in the optical bandgap from 4.0 to 3.2 eV, while the Urbach energy indicates an increase of structural disorder. The photoluminescence (PL) excitation and emission related to Fe³⁺ energy levels is observed, with a broad red emission peak at 700 nm, decreasing with Fe concentration in relation to higher defectivity and clustering. A detailed lifetime analysis shows long lasting tails of the order of milliseconds, also decreasing with Fe content due to non-radiative recombinations and quenching.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.