Optical Materials: X最新文献

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Impurity-enhanced core valence luminescence via Zn-doping in cesium magnesium chlorides 通过在铯镁氯化物中掺杂锌实现杂质增强型核价发光
Optical Materials: X Pub Date : 2024-08-31 DOI: 10.1016/j.omx.2024.100349
Daniel Rutstrom , Luis Stand , Maciej Kapusta , Dylan Windsor , Haixuan Xu , Charles L. Melcher , Mariya Zhuravleva
{"title":"Impurity-enhanced core valence luminescence via Zn-doping in cesium magnesium chlorides","authors":"Daniel Rutstrom ,&nbsp;Luis Stand ,&nbsp;Maciej Kapusta ,&nbsp;Dylan Windsor ,&nbsp;Haixuan Xu ,&nbsp;Charles L. Melcher ,&nbsp;Mariya Zhuravleva","doi":"10.1016/j.omx.2024.100349","DOIUrl":"10.1016/j.omx.2024.100349","url":null,"abstract":"<div><p>Scintillators with faster timing capabilities are currently in high demand for use in radiation detection systems in the fields of nuclear and medical physics. The limited number of suitable materials that meet the performance criteria of next generation detection systems presents an opportunity for discovery of new fast scintillator materials. In this work, the effects of doping several ultrafast core-valence luminescent (CVL) scintillators with divalent Zn is explored. Three compounds are investigated – CsMgCl<sub>3</sub>, Cs<sub>2</sub>MgCl<sub>4</sub>, and Cs<sub>3</sub>MgCl<sub>5</sub> – and single crystals of each doped with 5 mol% Zn are grown via the Bridgman method. Additionally, mixing across the full range of concentrations (from 0 % to 100 % Zn) is explored in the Cs<sub>2</sub>Mg<sub>1-x</sub>Zn<sub>x</sub>Cl<sub>4</sub> and Cs<sub>3</sub>Mg<sub>1-x</sub>Zn<sub>x</sub>Cl<sub>5</sub> systems. For low concentrations of Zn, light yields of all three compounds are enhanced (by up to ∼60 %) compared to the pure crystals, achieving what we believe to be the brightest known CVL, CsMgCl<sub>3</sub>:Zn 5 % (3400 ± 170 ph/MeV light yield). More importantly, Zn doping does not affect the ultrafast timing properties, with each composition maintaining a single-component decay time around 1–3 ns. A sub-100 ps coincidence time resolution (CTR) is also achieved with CsMgCl<sub>3</sub>:Zn 5 %. The results of this work reveal a new avenue towards obtaining brighter CVL materials, which could open up possibilities for more advanced ultrafast scintillators to be discovered moving forward.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100349"},"PeriodicalIF":0.0,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000615/pdfft?md5=37508c1b6f9b347cedabc0a9e4f2b669&pid=1-s2.0-S2590147824000615-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical properties of nitride-rich SiNx and its use in CMOS-compatible near-UV Bragg filter fabrication 富氮化物氮化硅的光学特性及其在 CMOS 兼容型近紫外布拉格滤波器制造中的应用
Optical Materials: X Pub Date : 2024-08-24 DOI: 10.1016/j.omx.2024.100348
Reinoud F. Wolffenbuttel , Declan Winship , Yutao Qin , Yogesh Gianchandani , David Bilby , Jaco H. Visser
{"title":"Optical properties of nitride-rich SiNx and its use in CMOS-compatible near-UV Bragg filter fabrication","authors":"Reinoud F. Wolffenbuttel ,&nbsp;Declan Winship ,&nbsp;Yutao Qin ,&nbsp;Yogesh Gianchandani ,&nbsp;David Bilby ,&nbsp;Jaco H. Visser","doi":"10.1016/j.omx.2024.100348","DOIUrl":"10.1016/j.omx.2024.100348","url":null,"abstract":"<div><p>Nitride-rich silicon-nitride (SiN<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>) is being explored for its potential as a suitable optical material for use in microsystems operating in the near-UV spectral range. Although silicon-rich SiN<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span> is widely accepted as a CMOS-compatible dielectric and micromechanical material, its optical absorption limits application to the visible to near-IR spectral range. However, this work shows that a balance can be achieved between a sufficiently high index of refraction (<span><math><mrow><mi>n</mi><mo>&gt;</mo></mrow></math></span> 2) and an acceptable optical loss (<span><math><mrow><mi>k</mi><mo>&lt;</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math></span>) in nitride-rich SiN<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span> of appropriate composition (<span><math><mrow><mi>x</mi><mo>∼</mo><mn>1</mn><mo>.</mo><mn>45</mn></mrow></math></span>). Bragg reflectors with a design wavelength at <span><math><msub><mrow><mi>λ</mi></mrow><mrow><mi>o</mi></mrow></msub></math></span>= 330 nm are used for validation. PECVD is used for sample preparation and experiments confirm that the spectral range available for use of SiN<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>-based optical microsystems extends to wavelengths as low as 300 nm.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100348"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000603/pdfft?md5=f0d523109d06f0fd5d517373bc4f7ca5&pid=1-s2.0-S2590147824000603-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring optical properties and humidity sensing response of multilayered Tb(Sal)3Phen and Eu(DBM)3Phen complex nanofibres 定制多层 Tb(Sal)3Phen 和 Eu(DBM)3Phen 复合物纳米纤维的光学特性和湿度传感响应
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100340
Pooja , Ketan Pancholi , Yashashchandra Dwivedi
{"title":"Tailoring optical properties and humidity sensing response of multilayered Tb(Sal)3Phen and Eu(DBM)3Phen complex nanofibres","authors":"Pooja ,&nbsp;Ketan Pancholi ,&nbsp;Yashashchandra Dwivedi","doi":"10.1016/j.omx.2024.100340","DOIUrl":"10.1016/j.omx.2024.100340","url":null,"abstract":"<div><p>In this work, we investigate the opto-humidity sensing and colour tuning in polyvinyl alcohol (PVA) polymeric electrospun nanofibres dispersed with Tb(Sal)<sub>3</sub>Phen (TSP) and Eu(DBM)<sub>3</sub>Phen (EDP) complexes. Fourier transform infrared spectroscopy, scanning electron microscopy, and photoluminescence analysis were used to thoroughly analyse the structural, morphological, and spectroscopic features of the synthesised nanofibres in single and stacked multilayer nanofibres. A spectroscopic analysis was performed on all configuration schemes. Under UV excitations, the synthesised TSP complex and EDP complex inhibited nanofibres yield green and red emission corresponding to <sup>5</sup>D<sub>4</sub>→<sup>7</sup>F<sub>j</sub> (j = 4, 5, 6) and <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>j</sub> (j = 0, 1, 2, 3) transitions attributed to Tb<sup>3+</sup> and Eu<sup>3+</sup> ions, respectively. The EDP nanofibres presented better UV radiation absorption than TSP, which was attributed to higher absorptivity of DBM than Sal. Additionally, the photoluminescence intensity ratio of characteristic emission peaks i.e. 544 nm (<sup>5</sup>D<sub>4</sub>→<sup>7</sup>F<sub>5</sub>)/615 nm (<sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>2</sub>) is function of humidity exposure and excitation wavelength. The stacked multilayer nanofibres exhibit good response and recovery times, 35 and 52 s, negligible hysteresis, and cyclic stability.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100340"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000524/pdfft?md5=0bc856afaacc55cdb1420283af2fb669&pid=1-s2.0-S2590147824000524-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141630219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The dual luminescence of M2MgTeO6 (M= Sr, Ba) double perovskites M2MgTeO6(M= Sr,Ba)双过氧化物的双重发光特性
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100337
E. Cavalli , F. Mezzadri , M.M. Natile
{"title":"The dual luminescence of M2MgTeO6 (M= Sr, Ba) double perovskites","authors":"E. Cavalli ,&nbsp;F. Mezzadri ,&nbsp;M.M. Natile","doi":"10.1016/j.omx.2024.100337","DOIUrl":"https://doi.org/10.1016/j.omx.2024.100337","url":null,"abstract":"<div><p>Sr<sub>2</sub>MgTeO<sub>6</sub> (SMT) and Ba<sub>2</sub>MgTeO<sub>6</sub> (BMT) ceramics with the double perovskite structure have been synthesized by solid-state route and by thermal decomposition of nitrate solution precursor. Both compounds possess interesting and unexpected emission properties in the visible and NIR regions, never reported before for this type of materials. These properties have been measured in different experimental conditions in order to characterize their nature. The literature information on tellurium containing luminescent materials is not rich and the data are somewhat contradictory: nevertheless, they agree in assigning the emission properties to Te<sup>4+</sup> in octahedral coordination, whereas the Te<sup>6+</sup> ion is considered not luminescent. The presence of Te<sup>4+</sup> ions has then been verified by XPS measurements. On the basis of the experimental evidences, the visible luminescence has been assigned to a transition between the electronic levels of the Te<sup>4+</sup> ion. The origin of the NIR emission appears more difficult to assess: among the explored hypotheses, the most convincing one, at the present level of the information, involves the possible interactions between the Te<sup>4+</sup> and Te<sup>6+</sup> ions with consequent formation of an optically active charge transfer state, as already observed for other ns<sup>2</sup>-type ions (Bi<sup>3+</sup>, Sb<sup>3+</sup>).</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100337"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000494/pdfft?md5=1101d43af504905d68adf91d6a193c0e&pid=1-s2.0-S2590147824000494-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141596724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New explanation for oxidation-induced Cr4+ formation in garnets 石榴石中氧化诱导 Cr4+ 形成的新解释
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100342
M. Chaika , K. Elzbieciak-Piecka , O. Vovk , L. Marciniak
{"title":"New explanation for oxidation-induced Cr4+ formation in garnets","authors":"M. Chaika ,&nbsp;K. Elzbieciak-Piecka ,&nbsp;O. Vovk ,&nbsp;L. Marciniak","doi":"10.1016/j.omx.2024.100342","DOIUrl":"10.1016/j.omx.2024.100342","url":null,"abstract":"<div><p>The demand for self-Q-switched lasers caused a growing interest in Cr<sup>4+</sup>:YAG materials. However, the main problem of Cr<sup>4+</sup>:YAG is an insufficient concentration of Cr<sup>4+</sup> ions. This problem is complicated by the absence of the adequate model describing formation of Cr<sup>4+</sup> ions. Analysis of the temperature dependence of Cr<sup>3+</sup> luminescence in the Cr-doped YAG ceramics after different thermal treatments allows understanding the mechanism of Cr<sup>3+</sup>-Cr<sup>4+</sup> valence transformation. Two types of Cr<sup>3+</sup> centers with different spectroscopic properties were revealed in the Cr,Ca-doped YAG ceramics, namely, single Cr<sup>3+</sup> ions, and Cr<sup>3+</sup>/ <span><math><mrow><mo>[</mo><mrow><msubsup><mtext>Ca</mtext><mi>C</mi><mo>′</mo></msubsup><mo>…</mo><msubsup><mi>V</mi><mi>O</mi><mo>·</mo></msubsup></mrow><mo>]</mo></mrow></math></span> couples. Using the obtained spectroscopic data, a model of formation of Cr<sup>4+</sup> ions in YAG lattice was proposed.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100342"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000548/pdfft?md5=3c9a7ae63d7fa17074f627e252bf4efd&pid=1-s2.0-S2590147824000548-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141951374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of swift heavy ions irradiation on optical and luminescence properties of Y3Al5O12 single crystals 快速重离子辐照对 Y3Al5O12 单晶的光学和发光特性的影响
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100341
V. Pankratova , J. Butikova , A. Kotlov , A.I. Popov , V. Pankratov
{"title":"Influence of swift heavy ions irradiation on optical and luminescence properties of Y3Al5O12 single crystals","authors":"V. Pankratova ,&nbsp;J. Butikova ,&nbsp;A. Kotlov ,&nbsp;A.I. Popov ,&nbsp;V. Pankratov","doi":"10.1016/j.omx.2024.100341","DOIUrl":"10.1016/j.omx.2024.100341","url":null,"abstract":"<div><p>Optical and luminescence properties of Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> (YAG) single crystals preliminary irradiated by swift heavy ions were studied. Swift heavy Xe ions with fluences ranging from 6·10<sup>10</sup> to 2·10<sup>12</sup> ions/cm<sup>2</sup> were utilized for the irradiation of nominally undoped YAG single crystals. A stable strong induced absorption observed in the 200–600 nm spectral range correlates with the irradiation fluence. It is suggested that several centers are responsible for this induced absorption in YAG single crystals and their possible origin (F-type centers) is proposed and discussed. The swift heavy ions irradiation strongly modifies the luminescence properties of YAG, namely, the excitonic emission at liquid helium temperature is drastically suppressed in heavily irradiated crystals.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100341"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000536/pdfft?md5=40d7203da9ddb58508b48342cff27d3c&pid=1-s2.0-S2590147824000536-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141622198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Luminescence properties of Tb3+-activated K2O–La2O3–Ga2O3 glasses Tb3+ 激活的 K2O-La2O3-Ga2O3 玻璃的发光特性
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100344
Naoki Kawano , Kenji Shinozaki , Daisuke Nakauchi , Takumi Kato , Yuma Takebuchi , Hiroyuki Fukushima , Takayuki Yanagida
{"title":"Luminescence properties of Tb3+-activated K2O–La2O3–Ga2O3 glasses","authors":"Naoki Kawano ,&nbsp;Kenji Shinozaki ,&nbsp;Daisuke Nakauchi ,&nbsp;Takumi Kato ,&nbsp;Yuma Takebuchi ,&nbsp;Hiroyuki Fukushima ,&nbsp;Takayuki Yanagida","doi":"10.1016/j.omx.2024.100344","DOIUrl":"10.1016/j.omx.2024.100344","url":null,"abstract":"<div><p>Photoluminescence, scintillation, and thermoluminescence characteristics of the Tb<sup>3+</sup>-activated gallate glasses (20K<sub>2</sub>O–(11-x/2)La<sub>2</sub>O<sub>3</sub>–69Ga<sub>2</sub>O<sub>3</sub>–x/2Tb<sub>4</sub>O<sub>7</sub>, x = 0.1–1.0) were investigated. The Tb<sup>3+</sup>-activated gallate glasses exhibited photoluminescence with some peaks at approximately 490, 540, 595, and 625 nm that were attributable to the 4f→4f transition of Tb<sup>3+</sup>. These peaks also appeared under X-ray radiation, and the x = 1.0 gallate glass showed the highest intensity. Moreover, a broad thermoluminescence glow peak appeared at 90 °C, and the thermoluminescence peak intensity decreased with increasing the Tb concentration. A complimentary relation between the scintillation and thermoluminescence intensity was observed.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100344"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000561/pdfft?md5=3f9c180a8e48e9bd872da6d395d19f60&pid=1-s2.0-S2590147824000561-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preface: Phosphor materials for solid state lighting 前言固态照明用荧光粉材料
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100326
{"title":"Preface: Phosphor materials for solid state lighting","authors":"","doi":"10.1016/j.omx.2024.100326","DOIUrl":"10.1016/j.omx.2024.100326","url":null,"abstract":"","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100326"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259014782400038X/pdfft?md5=02b29b09fee12a3f3df5e92de024991a&pid=1-s2.0-S259014782400038X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141051031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of the outer-sphere cations on the photophysical and magnetic properties of rare earth complexes with 2,2,2-trichloro-N-(diphenylphosphoryl)acetamide 外层阳离子对 2,2,2-三氯-N-(二苯基磷酰)乙酰胺稀土络合物光物理和磁性的影响
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100332
Łukasz Michnik , Albano N. Carneiro Neto , Viktor A. Trush , Maria Korabik , Oscar L. Malta , Volodymyr M. Amirkhanov , Paula Gawryszewska
{"title":"The effect of the outer-sphere cations on the photophysical and magnetic properties of rare earth complexes with 2,2,2-trichloro-N-(diphenylphosphoryl)acetamide","authors":"Łukasz Michnik ,&nbsp;Albano N. Carneiro Neto ,&nbsp;Viktor A. Trush ,&nbsp;Maria Korabik ,&nbsp;Oscar L. Malta ,&nbsp;Volodymyr M. Amirkhanov ,&nbsp;Paula Gawryszewska","doi":"10.1016/j.omx.2024.100332","DOIUrl":"https://doi.org/10.1016/j.omx.2024.100332","url":null,"abstract":"<div><p>Two series of rare earth coordination compounds have been synthesized (<strong>Na[RE(L</strong><sub><strong>4</strong></sub><strong>)]</strong> (labeled as <strong>1RE</strong>) and <strong>PPh</strong><sub><strong>4</strong></sub><strong>[RE(L</strong><sub><strong>4</strong></sub><strong>)]</strong> (labeled as <strong>2RE)</strong><strong>,</strong> where RE = Y<sup>3</sup><sup>+</sup>, Eu<sup>3+</sup>, Tb<sup>3+</sup>, L = 2,2,2-trichloro-N-(diphenylphosphoryl)acetamide) to determine the possibility of modifying their photophysical and magnetical properties by changing the counterion. The crystal structure of <strong>1RE</strong> was determined based on the single-crystal X-ray diffraction and the crystal structure of <strong>2RE</strong> was determined based on quantum chemistry computational procedures. Characterization of the physicochemical properties of the compounds was carried out using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), <sup>1</sup>H and <sup>31</sup>P NMR spectroscopy as well as FT-IR, absorption and luminescence spectroscopy in the temperature range of 300 - 77 K. The rate constants of radiative (A<sub>rad</sub>) and non-radiative (A<sub>nrad</sub>) transitions, intrinsic (<span><math><mrow><msubsup><mi>Q</mi><mi>Ln</mi><mi>Ln</mi></msubsup></mrow></math></span>) and overall (<span><math><msubsup><mi>Q</mi><mrow><mi>L</mi><mi>n</mi></mrow><mi>L</mi></msubsup></math></span>) emission quantum yields, sensitization efficiency (η<sub>sens</sub>), the experimental and theoretical intensity parameters (Ω<sub>λ</sub>), the forward (<span><math><mrow><msup><mi>W</mi><mi>S</mi></msup></mrow></math></span>, <span><math><mrow><msup><mi>W</mi><mi>T</mi></msup></mrow></math></span>) and backward (<span><math><mrow><msubsup><mi>W</mi><mi>b</mi><mi>S</mi></msubsup></mrow></math></span>, <span><math><mrow><msubsup><mi>W</mi><mi>b</mi><mi>T</mi></msubsup></mrow></math></span>) intramolecular energy transfer (IET) rates were determined. Magnetic properties of Tb<sup>3+</sup> compounds were studied in a constant field of 0.5 T in the temperature range of 1.8–300 K. Dynamic AC magnetic susceptibility measurements were carried out as a function of temperature and frequency for <strong>1</strong><strong>Tb</strong> and <strong>2</strong><strong>Tb</strong>. Only in the case of <strong>2</strong><strong>Tb</strong>, in the presence of an external DC field, a slight temperature dependence of in-phase χ′ and out-of-phase χ'' susceptibility was recorded. Based on experimental and theoretical results, the significant effect of counterion on the photophysical and magnetic properties of RE chelates has been demonstrated and clarified, providing valuable guidance for the design of bifunctional electromagnetic radiation converters.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"23 ","pages":"Article 100332"},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000445/pdfft?md5=e48cfced280f1e014d3b600574bb7afc&pid=1-s2.0-S2590147824000445-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermoluminescence studies of a Gothic church in Świebodzin from Silesia in Poland 波兰西里西亚圣维博津哥特式教堂的热释光研究
Optical Materials: X Pub Date : 2024-07-01 DOI: 10.1016/j.omx.2024.100308
Andrzej Legendziewicz , Janina Legendziewicz
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