{"title":"控制退火提高溶胶-凝胶合成Gd2.37Y0.6Al5O12: Ce0.03纳米粉体的结构稳定性和发光性能","authors":"Karima Hammoum, Samir Hamrit, Allaoua Boukerika, Lydia Zaidi, Youssef Larbah, Djamel Eddine Kdib","doi":"10.1007/s10971-025-06700-0","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, we report the synthesis of cerium-doped gadolinium yttrium aluminum garnet powders with chemical formula Gd<sub>2.37</sub>Y<sub>0.6</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sub>0.03</sub> via the sol-gel method. The effect of annealing temperature on the stability of the garnet phase was thoroughly investigated. Various characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and photoluminescence spectroscopy (PL), were employed to assess these effects. XRD analysis demonstrated a marked improvement in the stability and crystallinity of the garnet phase with increasing annealing temperatures. FESEM images revealed the evolution of interconnected quasi-spherical particles, with a significant enlargement in average particle size correlating with higher annealing temperatures. PL spectra displayed a broad emission band attributable to Ce³⁺ transitions within the garnet matrix. Notably, the emission intensity exhibited a substantial enhancement with elevated annealing temperatures, which can be attributed to the increased crystallinity and a higher proportion of the garnet phase. These findings underscore the critical role of annealing temperature in optimizing the structural and luminescent properties of Gd<sub>2.37</sub>Y<sub>0.6</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sub>0.03</sub> nanopowders.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>The effect of annealing temperature on the stability of the garnet Gd<sub>2.37</sub>Y<sub>0.6</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sub>0.03</sub> and luminescence, structural, morphological properties.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 2","pages":"486 - 495"},"PeriodicalIF":2.3000,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Controlled annealing for enhanced structural stability and luminescence of sol-gel synthesized Gd2.37Y0.6Al5O12: Ce0.03 nanopowders\",\"authors\":\"Karima Hammoum, Samir Hamrit, Allaoua Boukerika, Lydia Zaidi, Youssef Larbah, Djamel Eddine Kdib\",\"doi\":\"10.1007/s10971-025-06700-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, we report the synthesis of cerium-doped gadolinium yttrium aluminum garnet powders with chemical formula Gd<sub>2.37</sub>Y<sub>0.6</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sub>0.03</sub> via the sol-gel method. The effect of annealing temperature on the stability of the garnet phase was thoroughly investigated. Various characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and photoluminescence spectroscopy (PL), were employed to assess these effects. XRD analysis demonstrated a marked improvement in the stability and crystallinity of the garnet phase with increasing annealing temperatures. FESEM images revealed the evolution of interconnected quasi-spherical particles, with a significant enlargement in average particle size correlating with higher annealing temperatures. PL spectra displayed a broad emission band attributable to Ce³⁺ transitions within the garnet matrix. Notably, the emission intensity exhibited a substantial enhancement with elevated annealing temperatures, which can be attributed to the increased crystallinity and a higher proportion of the garnet phase. These findings underscore the critical role of annealing temperature in optimizing the structural and luminescent properties of Gd<sub>2.37</sub>Y<sub>0.6</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sub>0.03</sub> nanopowders.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>The effect of annealing temperature on the stability of the garnet Gd<sub>2.37</sub>Y<sub>0.6</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sub>0.03</sub> and luminescence, structural, morphological properties.</p></div></div></figure></div></div>\",\"PeriodicalId\":664,\"journal\":{\"name\":\"Journal of Sol-Gel Science and Technology\",\"volume\":\"114 2\",\"pages\":\"486 - 495\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-02-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sol-Gel Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10971-025-06700-0\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-025-06700-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Controlled annealing for enhanced structural stability and luminescence of sol-gel synthesized Gd2.37Y0.6Al5O12: Ce0.03 nanopowders
In this study, we report the synthesis of cerium-doped gadolinium yttrium aluminum garnet powders with chemical formula Gd2.37Y0.6Al5O12:Ce0.03 via the sol-gel method. The effect of annealing temperature on the stability of the garnet phase was thoroughly investigated. Various characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and photoluminescence spectroscopy (PL), were employed to assess these effects. XRD analysis demonstrated a marked improvement in the stability and crystallinity of the garnet phase with increasing annealing temperatures. FESEM images revealed the evolution of interconnected quasi-spherical particles, with a significant enlargement in average particle size correlating with higher annealing temperatures. PL spectra displayed a broad emission band attributable to Ce³⁺ transitions within the garnet matrix. Notably, the emission intensity exhibited a substantial enhancement with elevated annealing temperatures, which can be attributed to the increased crystallinity and a higher proportion of the garnet phase. These findings underscore the critical role of annealing temperature in optimizing the structural and luminescent properties of Gd2.37Y0.6Al5O12:Ce0.03 nanopowders.
Graphical abstract
The effect of annealing temperature on the stability of the garnet Gd2.37Y0.6Al5O12:Ce0.03 and luminescence, structural, morphological properties.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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