Synergistic effect induces self crystallization of CsPbBr3 quantum dots in borosilicate glass matrix by LiF

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-10-05 DOI:10.1016/j.ceramint.2024.10.043

Bojie Ding , Xinhao Cai , Shenglin Ma , Ruiting Liang , Imran Khan , Jianbei Qiu , Yue Liu , Anjun Huang , Zhiguo Song , Yangke Cun , Cherkasova Tatiana , Zhengwen Yang

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引用次数: 0

Abstract

Cesium lead halide perovskite (CsPbX₃) quantum dots (QDs) are recognized as viable substitutes for conventional fluorescent powder color converters, which can improve the color gamut and reproducibility of liquid crystal displays (LCDs). Encapsulating QDs in glass can effectively solve the water oxygen stability of QDs, but the glass matrix impedes the nucleation of QDs and the precipitation of QDs requires secondary heating. In our research, we successfully accomplished the self-crystallization of CsPbBr₃ QDs facilitated by LiF within a B₂O₃-SiO₂-ZnO borosilicate glass matrix. The results indicate that the self crystallization of CsPbBr₃ QDs induced by LiF in borosilicate glass matrix has a synergistic effect. The Li ⁺ ions can break the glass network structure and facilitate ionic migration and transport, while F⁻ ions have good electronegativity due to ion aggregation, and can strongly attract Cs⁺ and Pb²⁺ ions with larger atomic radii, thereby promoting the rapid nucleation and growth of CsPbBr₃ QDs, ultimately synthesizing QDs with uniform particle size, narrow half peak width, good optical properties, and thermal stability.

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LiF 在硼硅玻璃基质中诱导 CsPbBr3 量子点自结晶的协同效应

卤化铅铯过氧化物（CsPbX3）量子点（QDs）被认为是传统荧光粉色彩转换器的可行替代品，可以改善液晶显示器（LCD）的色域和再现性。将 QDs 封装在玻璃中可以有效解决 QDs 的水氧稳定性问题，但玻璃基质会阻碍 QDs 的成核，且 QDs 的沉淀需要二次加热。在我们的研究中，我们成功地在 B2O3-SiO2-ZnO 硼硅酸盐玻璃基质中实现了 LiF 促进的 CsPbBr3 QDs 自结晶。结果表明，硼硅酸盐玻璃基质中 LiF 诱导的 CsPbBr3 QDs 自结晶具有协同效应。Li + 离子能打破玻璃网络结构，促进离子迁移和传输，而 F- 离子因离子聚集而具有良好的电负性，能强烈吸引原子半径较大的 Cs+ 和 Pb2+ 离子，从而促进 CsPbBr3 QDs 的快速成核和生长，最终合成粒径均匀、半峰宽窄、光学性能和热稳定性良好的 QDs。

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.