PMMA-Au@YAG:Ce phosphor deposited on flexible substrate for white light emitting devices

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering B-advanced Functional Solid-state Materials Pub Date : 2024-11-07 DOI:10.1016/j.mseb.2024.117808

Vasilica Ţucureanu, Cosmin Romanițan, Iuliana Mihalache, Alina Matei

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引用次数: 0

Abstract

This paper investigates the possibility to obtain yttrium aluminum garnet doped with cerium ions (YAG:Ce) phosphor, improve the emissive properties by modification with metal nanoparticles, followed by embedding into the polymer matrix, and deposition of nanocomposite on a flexible substrate to produce the white light by excitation with a blue chip. YAG:Ce yellow phosphor was obtained by a modified solid-state process, followed by in-situ anchoring of gold nanoparticles (Au@YAG). To deposit the phosphor on the flexible substrate, the Au@YAG nanocomposite was embedded in a poly(methyl methacrylate) (PMMA) matrix using the ex-situ method. The quality of the phosphor particles and composites was studied using FTIR spectroscopy, X-ray diffraction, and fluorescence spectroscopy. The applicability of the developed materials and the efficiency of methods were confirmed by the photometric studies performed on the composite film to determine the chromaticity coordinates, leading to the parameters of the semiconductor device that generates cold white light.

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沉积在柔性衬底上的 PMMA-Au@YAG:Ce 荧光粉，用于白色发光器件

本文研究了获得掺杂铈离子的钇铝石榴石（YAG:Ce）荧光粉的可能性，通过使用金属纳米粒子改性来改善其发射特性，然后将其嵌入聚合物基质中，并将纳米复合材料沉积在柔性基底上，在蓝光芯片的激发下产生白光。YAG:Ce 黄色荧光粉是通过改进的固态工艺获得的，然后在原位锚定了金纳米粒子（Au@YAG）。为了将荧光粉沉积在柔性基底上，采用原位法将 Au@YAG 纳米复合材料嵌入聚甲基丙烯酸甲酯（PMMA）基质中。利用傅立叶变换红外光谱、X 射线衍射和荧光光谱研究了荧光粉颗粒和复合材料的质量。通过对复合薄膜进行光度测定研究，确定色度坐标，从而得出产生冷白光的半导体器件的参数，这证实了所开发材料的适用性和方法的效率。

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来源期刊

Materials Science and Engineering B-advanced Functional Solid-state Materials 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.