Optimization of synthesis techniques and characterization of AgBr0.7I0.3 – TlBr0.46I0.54 optical ceramics and single crystals

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-09-04 DOI:10.1016/j.optmat.2025.117479

Alexander Lvov, Anastasia Yuzhakova, Vladislav Kostrov, Polina Pestereva, Sofya Barykina, Aleksey Ishchenko, Dmitrii Salimgareev, Liya Zhukova

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引用次数: 0

Abstract

Single crystals and optical ceramics based on the AgBr_0.7I_0.3 – TlBr_0.46I_0.54 system exhibit not only high optical transparency but also promising luminescent properties. To synthesize these materials, a comprehensive study of their physicochemical transformations, synthesis technology, and optical properties was conducted. Phase diagram analysis revealed the possibility of growing single crystals with compositions of 0–3 mol. % and 94–100 mol. % AgBr_0.7I_0.3 in TlBr_0.46I_0.54, while ceramic synthesis was feasible in the range of 3–11 mol. % and 72–94 mol. % AgBr_0.7I_0.3 in TlBr_0.46I_0.54. The optimal synthesis conditions were determined and verified using XRD and SEM analyses. By optimizing acid concentrations and compositions, high-purity raw materials were obtained, enabling the successful synthesis of a series of single crystals and ceramics. The resulting materials demonstrated a broad transmission range (0.44–41.7 μm) without absorption bands, along with high transparency. All samples exhibited luminescence in the visible to near-IR range. The most intense emission was observed in ceramic samples lightly doped with 3 mol. % and 7 mol. % AgBr_0.7I_0.3 in TlBr_0.46I_0.54, corresponding to the rhombic phase. The developed materials show potential for applications as optical and luminescent solids.

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AgBr0.7I0.3 - TlBr0.46I0.54光学陶瓷及单晶合成工艺优化及表征

基于AgBr0.7I0.3 - TlBr0.46I0.54体系的单晶和光学陶瓷不仅具有较高的光学透明度，而且具有良好的发光性能。为了合成这些材料，对它们的物理化学转化、合成技术和光学性质进行了全面的研究。相图分析表明，在TlBr0.46I0.54中可以生长0-3 mol. %和94-100 mol. % AgBr0.7I0.3的单晶，而在TlBr0.46I0.54中可以在3-11 mol. %和72-94 mol. % AgBr0.7I0.3范围内合成陶瓷。通过XRD和SEM分析，确定了最佳合成条件。通过优化酸的浓度和组成，获得了高纯度的原料，成功地合成了一系列单晶和陶瓷。该材料具有较宽的透射范围（0.44 ~ 41.7 μm），无吸收带，透明度高。所有样品都在可见光到近红外范围内发光。在TlBr0.46I0.54中，轻掺3mol . %和7mol . % AgBr0.7I0.3的陶瓷样品的发射强度最大，对应于菱形相。所开发的材料显示出作为光学和发光固体的应用潜力。

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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.