Optical properties and thermal sensitivity of AgInS2 and AgInS2/ZnS quantum dots embedded in barium sulphate and calcium carbonate matrices

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

Optical Materials Pub Date : 2024-11-19 DOI:10.1016/j.optmat.2024.116441

Yuliana Yosypenko , Vasyl Mykhailovych , Vladyslav Yosypenko , Aurelian Rotaru , Yuriy Khalavka

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Abstract

Quantum dots of AgInS₂ and AgInS₂ doped with ZnS were embedded in microscale spherical BaSO₄ and CaCO₃ matrices by co-precipitation approach. Energy dispersive X-ray analysis (EDX) confirmed the homogeneous distribution of quantum dots within the matrices. The effect of encapsulation on the optical properties of quantum dots (QDs) and the dependence of photoluminescence (PL) spectra on temperature were investigated. The similar appearance of the spectra and the same position of the emission maximum for the composites with BaSO₄ and CaCO₃ indicate that the nature of the matrix does not significantly affect the spectral characteristics of quantum dots. While the application of composites based on CaCO₃ at high temperatures is limited due to the degradation, composites with BaSO₄ demonstrate high stability and thermal sensitivity (1.89 ± 0.0012 %/K). Therefore, the composites we studied are well-suited for light conversion and optical temperature sensing applications.

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嵌入硫酸钡和碳酸钙基质的 AgInS2 和 AgInS2/ZnS 量子点的光学特性和热灵敏度

通过共沉淀法将 AgInS2 和 AgInS2 掺杂 ZnS 的量子点嵌入微尺度球形 BaSO4 和 CaCO3 基质中。能量色散 X 射线分析（EDX）证实了量子点在基质中的均匀分布。研究了封装对量子点（QDs）光学特性的影响以及光致发光（PL）光谱对温度的依赖性。含有 BaSO4 和 CaCO3 的复合材料具有相似的光谱外观和相同的发射最大值位置，这表明基质的性质不会显著影响量子点的光谱特性。基于 CaCO3 的复合材料在高温下的应用因降解而受到限制，而基于 BaSO4 的复合材料则表现出较高的稳定性和热灵敏度（1.89 ± 0.0012 %/K）。因此，我们研究的复合材料非常适合光转换和光学温度传感应用。

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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.