Nikifor Rakov , Francisco Matias , Glauco S. Maciel
{"title":"Temperature sensing performance of Er3+:Yb3+ co-doped CaF2 ceramic powders using near-infrared light","authors":"Nikifor Rakov , Francisco Matias , Glauco S. Maciel","doi":"10.1016/j.jre.2024.01.005","DOIUrl":null,"url":null,"abstract":"<div><div><span>Luminescent materials<span> for application in temperature sensing have caught a lot of interest in recent years. Particularly erbium (Er</span></span><sup>3+</sup><span><span>)-doped fluoride-based materials (EFM), which are readily accessible by near-infrared (NIR) excitation to produce efficient photon conversion. It has been established that </span>ytterbium (Yb</span><sup>3+</sup>) may improve the performance of EFMs in both bulk and nanostructured forms by energy transfer channels among rare-earth ions in interstitial clusters. In this work, a comprehensive analysis of the Er<sup>3+</sup>:Yb<sup>3+</sup>:CaF<sub>2</sub><span> crystalline structure, photoluminescence, and energy transfer from Yb</span><sup>3+</sup> to Er<sup>3+</sup><span> is presented for powders prepared by combustion synthesis. The Er</span><sup>3+</sup>:Yb<sup>3+</sup>:CaF<sub>2</sub><span> powders display exceptional photon down-shift and up-conversion when exposed to NIR light (</span><em>λ</em> = 975 nm). The luminescence spectral change of the NIR emission around 1.5 μm, which corresponds to the Er<sup>3+</sup> electronic transition <sup>4</sup>I<sub>13/2</sub> → <sup>4</sup>I<sub>15/2</sub>, was investigated in a temperature range of 298–423 K for application in temperature sensing of biological systems exploring the third biological window. The luminescence intensity ratio technique was applied to the thermally coupled Stark sublevels of states <sup>4</sup>I<sub>13/2</sub> and <sup>4</sup>I<sub>15/2</sub> with the highest estimated temperature relative sensitivity being around 0.4 %/K at 298 K.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"43 2","pages":"Pages 253-261"},"PeriodicalIF":5.2000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Rare Earths","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S100207212400005X","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Luminescent materials for application in temperature sensing have caught a lot of interest in recent years. Particularly erbium (Er3+)-doped fluoride-based materials (EFM), which are readily accessible by near-infrared (NIR) excitation to produce efficient photon conversion. It has been established that ytterbium (Yb3+) may improve the performance of EFMs in both bulk and nanostructured forms by energy transfer channels among rare-earth ions in interstitial clusters. In this work, a comprehensive analysis of the Er3+:Yb3+:CaF2 crystalline structure, photoluminescence, and energy transfer from Yb3+ to Er3+ is presented for powders prepared by combustion synthesis. The Er3+:Yb3+:CaF2 powders display exceptional photon down-shift and up-conversion when exposed to NIR light (λ = 975 nm). The luminescence spectral change of the NIR emission around 1.5 μm, which corresponds to the Er3+ electronic transition 4I13/2 → 4I15/2, was investigated in a temperature range of 298–423 K for application in temperature sensing of biological systems exploring the third biological window. The luminescence intensity ratio technique was applied to the thermally coupled Stark sublevels of states 4I13/2 and 4I15/2 with the highest estimated temperature relative sensitivity being around 0.4 %/K at 298 K.
期刊介绍:
The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and complete experimental data. It represents high academic standards and new progress in the RE field. Due to the advantage of abundant RE resources of China, the research on RE develops very actively, and papers on the latest progress in this field emerge every year. It is not only an important resource in which technicians publish and obtain their latest research results on RE, but also an important way of reflecting the updated progress in RE research field.
The Journal of Rare Earths covers all research and application of RE rare earths including spectroscopy, luminescence and phosphors, rare earth catalysis, magnetism and magnetic materials, advanced rare earth materials, RE chemistry & hydrometallurgy, RE metallography & pyrometallurgy, RE new materials, RE solid state physics & solid state chemistry, rare earth applications, RE analysis & test, RE geology & ore dressing, etc.