Journal of Luminescence最新文献

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Structure, near-infrared broadband luminescence and long afterglow properties in CaGd2Ga4GeO12: Cr3+ garnet phosphor for multifunctional applications 多功能CaGd2Ga4GeO12: Cr3+石榴石荧光粉的结构、近红外宽带发光和长余辉特性
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-24 DOI: 10.1016/j.jlumin.2025.121489
Ying Ba, Yan Zhang, Yongzheng Fang, Jiayue Xu
{"title":"Structure, near-infrared broadband luminescence and long afterglow properties in CaGd2Ga4GeO12: Cr3+ garnet phosphor for multifunctional applications","authors":"Ying Ba,&nbsp;Yan Zhang,&nbsp;Yongzheng Fang,&nbsp;Jiayue Xu","doi":"10.1016/j.jlumin.2025.121489","DOIUrl":"10.1016/j.jlumin.2025.121489","url":null,"abstract":"<div><div>Near-infrared (NIR) long persistent phosphors (LPPs) have recently gained a lot of attention due to their significant potential in applications like information encryption, in vivo bioimaging, and military technologies. Nonetheless, the significant reduction in their brightness and duration to be a major issue. Consequently, the development of LPPs with enhanced luminescence intensity and prolonged duration is of great importance. In this study, we present a new near-infrared (NIR) luminescent phosphor particle (LPP), specifically CaGd<sub>2</sub>Ga<sub>4</sub>GeO<sub>12</sub>: Cr<sup>3+</sup> (CGGG: Cr<sup>3+</sup>). Under the irradiation of 448 nm blue light, the CGGG: Cr<sup>3+</sup> phosphors displays a larger full width at half maximum (FWHM) of 162 nm for emission. Following 5 min irradiation with 254 nm ultraviolet light, the instrument remained capable of detecting near-infrared emission signals after a 12 h interval. A detailed investigation was carried out on the crystal structure, electronic structure, thermal stability, luminescence characteristics, and afterglow behavior of this phosphor material. Moreover, an in-depth investigation into the mechanism of NIR LPPs was undertaken. Through thermoluminescence emission curve analysis, the trap distribution range in CGGG:Cr<sup>3+</sup> was also evaluated. In summary, these findings suggest that CGGG:Cr<sup>3+</sup> phosphor holds significant promise as a persistent near-infrared light-emitting material for advanced light source applications, including bio-imaging and information encryption.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121489"},"PeriodicalIF":3.6,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Broadband near-infrared emission properties of Cr3+ and Bi3+ co-doped double perovskite phosphor Cr3+和Bi3+共掺双钙钛矿荧光粉的宽带近红外发射特性
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-23 DOI: 10.1016/j.jlumin.2025.121492
Renping Cao, Xianjun Huang, Xiaochun Li, Fangrui Cheng, Jingheng Nie, Ruirui Yang, Sijie Liu, Ting Chen
{"title":"Broadband near-infrared emission properties of Cr3+ and Bi3+ co-doped double perovskite phosphor","authors":"Renping Cao,&nbsp;Xianjun Huang,&nbsp;Xiaochun Li,&nbsp;Fangrui Cheng,&nbsp;Jingheng Nie,&nbsp;Ruirui Yang,&nbsp;Sijie Liu,&nbsp;Ting Chen","doi":"10.1016/j.jlumin.2025.121492","DOIUrl":"10.1016/j.jlumin.2025.121492","url":null,"abstract":"<div><div>High-performance broadband near-infrared (NIR) emitting phosphors are receiving extensive attention because NIR light sources are used in many fields, such as biomedical imaging, food detection, night vision systems, plant growth, security surveillance, and non-invasive health monitoring. Herein, Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup> and Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup>, Bi<sup>3+</sup> phosphors with irregular size and smooth surface are prepared in air. Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup> and Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup>, Bi<sup>3+</sup> all show NIR emission peaking at ∼830 nm in the region from 650 to 1350 nm with ∼200 nm full width at half maximum (FWHM) owing to the <sup>4</sup>T<sub>2</sub>(<sup>4</sup>F) → <sup>4</sup>A<sub>2</sub> transition of Cr<sup>3+</sup>. The co-doped Bi<sup>3+</sup> can improve the luminescence intensity of Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup>, which achieves ∼2.15 times. The temperature-dependent emission spectra confirm the good thermal stability of Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup> and Li<sub>1.6</sub>Zn<sub>1.6</sub>Sn<sub>2.8</sub>O<sub>8</sub>:Cr<sup>3+</sup>, Bi<sup>3+</sup>. The luminescence property improvement of Cr<sup>3+</sup> doped luminescence materials can be referred to this paper content.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121492"},"PeriodicalIF":3.6,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlation between gamma radiation induced trap parameters and dosimetric properties of Ce-doped Ca2B2O5 phosphor ce掺杂Ca2B2O5荧光粉γ辐射诱导阱参数与剂量学性质的关系
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-23 DOI: 10.1016/j.jlumin.2025.121487
Yogeshri G. Bagekari , Kishor H. Gavhane , Preeti P. Kulkarni , Akash P. Jadhav , Sandhya B. Deshmukh , Mahesh S. Bhadane , Shailendra S. Dahiwale , Sanjay D. Dhole
{"title":"Correlation between gamma radiation induced trap parameters and dosimetric properties of Ce-doped Ca2B2O5 phosphor","authors":"Yogeshri G. Bagekari ,&nbsp;Kishor H. Gavhane ,&nbsp;Preeti P. Kulkarni ,&nbsp;Akash P. Jadhav ,&nbsp;Sandhya B. Deshmukh ,&nbsp;Mahesh S. Bhadane ,&nbsp;Shailendra S. Dahiwale ,&nbsp;Sanjay D. Dhole","doi":"10.1016/j.jlumin.2025.121487","DOIUrl":"10.1016/j.jlumin.2025.121487","url":null,"abstract":"<div><div>This study investigates the structural, morphological, photoluminescence, and thermoluminescence dosimetric properties of Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphors. The crystalline structure of the synthesized phosphor powder was determined using powder X-ray diffraction (PXRD), confirming a monoclinic structure. Scanning electron microscopy (SEM) revealed an irregular morphology with a non-uniform size distribution having an average particle size of approximately 0.75μm. Fourier transform infrared (FTIR) spectroscopy identified the presence of B–O stretching vibrations and other functional groups, which confirms the material's composition. Photoluminescence (PL) studies demonstrated intense blue luminescence, attributed to the 5d→4f transitions of Ce<sup>3+</sup> ions. Thermoluminescence (TL) glow curve optimization was conducted by varying Ce<sup>3+</sup> concentrations in Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphor samples. The optimized Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> (1.5 mol % Ce) exhibited a single TL peak at 259 °C, indicative of deeper level traps. The linear dose-response of Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>:1.5 mol % Ce<sup>3+</sup> phosphor was analyzed, revealing a linearity fit curve with a regression coefficient (R<sup>2</sup>) value of 0.98 across a dose range from 0.5 Gy to 850 Gy. Experimental TL glow curve studies using the T<sub>m</sub>–T<sub>stop</sub> and Initial Rise Method (IRM) techniques identified five distinct trapping levels, with activation energies 0.9 eV, 1 eV, 1.27 eV, 1.43 eV, and 1.6 eV. These findings suggest that Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphors have potential applications in various luminescent devices and in radiation dosimetry.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121487"},"PeriodicalIF":3.6,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-activated luminescent properties of zinc metaphosphate glasses enhanced by Tb3+ and Eu3+ doping for color tunability 掺杂Tb3+和Eu3+增强偏磷酸锌玻璃的自激活发光性能
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-23 DOI: 10.1016/j.jlumin.2025.121493
M. Hamed Misbah , Zaynab Ghubish , Emam F. El Agammy
{"title":"Self-activated luminescent properties of zinc metaphosphate glasses enhanced by Tb3+ and Eu3+ doping for color tunability","authors":"M. Hamed Misbah ,&nbsp;Zaynab Ghubish ,&nbsp;Emam F. El Agammy","doi":"10.1016/j.jlumin.2025.121493","DOIUrl":"10.1016/j.jlumin.2025.121493","url":null,"abstract":"<div><div>Self-activated zinc metaphosphate (ZnP) glasses co-doped with Eu<sub>2</sub>O<sub>3</sub> and/or Tb<sub>4</sub>O<sub>7</sub>, corresponding to the formula xEu<sub>2</sub>O<sub>3</sub>∙0.2Tb<sub>4</sub>O<sub>7</sub>∙(49.8-x)ZnO∙50P<sub>2</sub>O<sub>5</sub> (x = 0, 0.2, 0.4, 0.6 mol%), were synthesized using the melt quenching technique. X-ray diffraction (XRD) confirmed the amorphous nature of all the prepared glasses. Fourier Transform Infrared (FTIR) spectroscopy revealed the characteristic metaphosphate network structure, which remained largely unchanged upon doping with Eu<sub>2</sub>O<sub>3</sub> and/or Tb<sub>4</sub>O<sub>7</sub>. Under the UV-light illumination, ZnP glass exhibited intrinsic blue emission centered around 450 nm under UV excitation, which is attributed to intrinsic defects. Furthermore, the doped ZnP with Tb<sub>4</sub>O<sub>7</sub> or Eu<sub>2</sub>O<sub>3</sub> resulted in the characteristic green and red emissions due to the <sup>5</sup>D<sub>4</sub> → <sup>7</sup>F<sub>J</sub> transitions of Tb<sup>3+</sup> and <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>J</sub> transitions of Eu<sup>3+</sup>, respectively. In contrast, the co-doped ZnP with Eu<sub>2</sub>O<sub>3</sub> and Tb<sub>4</sub>O<sub>7</sub> resulted in yellow color emission. The UV–Visible, excitation, and photoluminescence spectra of the prepared matrices demonstrated efficient energy transfer from the self-activated ZnP host matrix to the Tb<sup>3+</sup> and Eu<sup>3+</sup> ions, as well as energy transfer from Tb<sup>3+</sup> to Eu<sup>3+</sup> ions. By adjusting the Eu<sup>3+</sup> concentration and the excitation wavelength, the emission color could be precisely tuned across the green-white-red spectrum. CIE 1931 chromaticity coordinates confirmed the color tunability, shifting from green (0.253, 0.514) towards white (0.335, 0.428) and further towards red under different excitation conditions and doping levels. These results suggest that Tb<sup>3+</sup>/Eu<sup>3+</sup> co-doped ZnP glasses are promising candidates for developing color-tunable phosphors for solid-state lighting applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"288 ","pages":"Article 121493"},"PeriodicalIF":3.6,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multiband excited bright NIR emitter via Yb3+/Cr3+ co-doped double perovskites for multimodal anti-counterfeiting and imaging Yb3+/Cr3+共掺杂双钙钛矿多波段激发明亮近红外发射极多模态防伪和成像
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-22 DOI: 10.1016/j.jlumin.2025.121488
Gaoqiang Li, Xu Chen, Meng Wang, Run Jiang, Xinzhen Ji, Dongwen Yang, Mochen Jia, Jibin Zhang, Yanbing Han, Linyuan Lian, Yongtao Tian, Xinjian Li, Zhifeng Shi
{"title":"Multiband excited bright NIR emitter via Yb3+/Cr3+ co-doped double perovskites for multimodal anti-counterfeiting and imaging","authors":"Gaoqiang Li,&nbsp;Xu Chen,&nbsp;Meng Wang,&nbsp;Run Jiang,&nbsp;Xinzhen Ji,&nbsp;Dongwen Yang,&nbsp;Mochen Jia,&nbsp;Jibin Zhang,&nbsp;Yanbing Han,&nbsp;Linyuan Lian,&nbsp;Yongtao Tian,&nbsp;Xinjian Li,&nbsp;Zhifeng Shi","doi":"10.1016/j.jlumin.2025.121488","DOIUrl":"10.1016/j.jlumin.2025.121488","url":null,"abstract":"<div><div>Near-infrared (NIR) luminescence, particularly in the 700–1100 nm range, holds great promise for applications in night vision, biomedical imaging, and anti-counterfeiting due to its deep tissue penetration, low scattering, and non-invasive nature. Yb<sup>3+</sup> ions feature a sharp NIR emission at ∼1000 nm, but their parity-forbidden 4f-4f transitions lead to weak absorption and poor excitation efficiency under ultraviolet–visible light. To overcome these limitations, we report a Cr<sup>3+</sup> co-doping strategy to enhance the NIR emission efficiency and excitation bandwidth of Yb<sup>3+</sup> in lead-free double perovskite Cs<sub>2</sub>NaScCl<sub>6</sub> microcrystals synthesized via a hydrothermal method. The introduction of Cr<sup>3+</sup> ions generates additional electronic states, reduces the band gap, and significantly broadens the excitation range from the ultraviolet to the visible region. Combined spectroscopy and theoretical calculations demonstrate the energy transfer from Cr<sup>3+</sup> to Yb<sup>3+</sup> with a high transfer efficiency of 45.51 %, leading to an 8.15-fold enhancement in NIR emission intensity compared to samples doped solely with Yb<sup>3+</sup>. The co-doped system exhibits efficient multi-band excitation and strong NIR emission, enabling its application in NIR phosphor-converted light-emitting diodes and anti-counterfeiting. This work provides a promising strategy for developing efficient, broadband-excitable NIR phosphors and advancing lead-free optoelectronic devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121488"},"PeriodicalIF":3.6,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lanthanide photonics on the path to future: from gas lighting to optical computers 走向未来的镧系光子学:从气体照明到光学计算机
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-22 DOI: 10.1016/j.jlumin.2025.121473
Jean-Claude G. Bünzli , Ka-Leung Wong
{"title":"Lanthanide photonics on the path to future: from gas lighting to optical computers","authors":"Jean-Claude G. Bünzli ,&nbsp;Ka-Leung Wong","doi":"10.1016/j.jlumin.2025.121473","DOIUrl":"10.1016/j.jlumin.2025.121473","url":null,"abstract":"<div><div>In 1891, Austrian scientist and entrepreneur Carl Auer von Welsbach filed a groundbreaking patent for a cotton mantle impregnated with cerium-doped thorium oxide, which converted the light and heat of gas lamps into a brilliant white glow. This marked the birth of lanthanide photonics and phosphor chemistry—a field that now underpins countless essential technologies, from solid-state lighting to cancer phototherapy and quantum computing information processing. This perspective explores the remarkable scientific journey of lanthanide photonics, highlighting recent breakthroughs and key developments. We begin with a historical overview before delving into fundamental advances including quantum chemical models, antenna effect and energy transfer mechanisms, the design of inorganic phosphors, the influence of electric and magnetic fields, molecular and circularly polarized luminescence, upconversion processes, and quantum bits. The final section focuses on cutting-edge applications, such as solid-state lighting, photovoltaics, mechanoluminescence, and biomedical innovations (optical imaging, cancer diagnosis, and photodynamic therapy), while briefly touching on other emerging uses. Rather than providing an exhaustive review, this article offers a concise yet broad overview of the field, spotlighting pivotal contributions from the past decade. Our goal is to capture the dynamism and interdisciplinary impact of lanthanide photonics as it continues to shape science and technology.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121473"},"PeriodicalIF":3.6,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The optical temperature sensing based on FIR of YVO4: Bi3+, Sm3+ nanophosphors 基于红外光谱的YVO4: Bi3+, Sm3+纳米荧光粉光学温度传感
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-22 DOI: 10.1016/j.jlumin.2025.121491
Xinlin Li, Qingyu Meng, Wenjun Sun
{"title":"The optical temperature sensing based on FIR of YVO4: Bi3+, Sm3+ nanophosphors","authors":"Xinlin Li,&nbsp;Qingyu Meng,&nbsp;Wenjun Sun","doi":"10.1016/j.jlumin.2025.121491","DOIUrl":"10.1016/j.jlumin.2025.121491","url":null,"abstract":"<div><div>In this study, a series of YVO<sub>4</sub>: Bi<sup>3+</sup>, Sm<sup>3+</sup> nanophosphors with varying dopant concentrations were synthesized via the hydrothermal method. A systematic study was conducted on their crystal structure, optical properties, and temperature-sensing properties. The experimental findings indicate that under 331 nm excitation, YVO<sub>4</sub>: Bi<sup>3+</sup>, Sm<sup>3+</sup> nanophosphors exhibit pronounced temperature-dependent luminescence. That is, the Bi<sup>3+</sup> luminescence has an obvious thermal quenching trend, whereas the thermal quenching of Sm<sup>3+</sup> luminescence is slower than that of Bi<sup>3+</sup>. Owing to the disparity in the thermal quenching tendency of the luminescence of these two ions, this difference becomes more pronounced as the temperature increases. Therefore, the fluorescence intensity ratio (FIR) of Sm<sup>3+</sup> and Bi<sup>3+</sup> can be used to characterize temperature and achieve a relatively high relative sensitivity (<em>S</em><sub><em>r</em></sub>). The nanophosphor synthesized in this study achieves a maximum <em>S</em><sub><em>r</em></sub> of 2.37 % K<sup>−1</sup> at 423 K (YVO<sub>4</sub>: 5 mol% Bi<sup>3+</sup>, 0.2 mol% Sm<sup>3+</sup>). Additionally, the luminescent colour of the nanophosphor changes from yellow-green to orange-red, with the rise of the temperature. This color change enables a rough estimation of the temperature. In conclusion, the YVO<sub>4</sub>: Bi<sup>3+</sup>, Sm<sup>3+</sup> nanophosphors demonstrate substantial potential for optical temperature-sensing applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121491"},"PeriodicalIF":3.6,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dy3+,Eu3+ co-doped double perovskite Ca2GdNbO6 phosphors for fluorescent thermometer Dy3+,Eu3+共掺杂双钙钛矿Ca2GdNbO6荧光温度计荧光粉
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-22 DOI: 10.1016/j.jlumin.2025.121482
Yutian Zhang, Lianjie Li, Junyu Chen, Hai Guo
{"title":"Dy3+,Eu3+ co-doped double perovskite Ca2GdNbO6 phosphors for fluorescent thermometer","authors":"Yutian Zhang,&nbsp;Lianjie Li,&nbsp;Junyu Chen,&nbsp;Hai Guo","doi":"10.1016/j.jlumin.2025.121482","DOIUrl":"10.1016/j.jlumin.2025.121482","url":null,"abstract":"<div><div>Fluorescent thermometers based on lanthanide-doped phosphors have broad application prospect because of their quickly response, highly sensitivity, non-contact mode and widely application scenarios. However, their relative sensitivity is limited by fixed thermal coupling energy level. Herein, Ca<sub>2</sub>GdNbO<sub>6</sub>:Dy<sup>3+</sup>,Eu<sup>3+</sup> samples possessing dual-emission centers were fabricated as fluorescence thermometers based non-thermal coupling energy level. When excited by 393.5 nm, the characteristic emissions from Dy<sup>3+</sup> and Eu<sup>3+</sup> in CGNO:Dy<sup>3+</sup>,Eu<sup>3+</sup> can be simultaneously detected. Furthermore, CGNO:Dy<sup>3+</sup>,Eu<sup>3+</sup> phosphors exhibit excellent temperature sensing performance in fluorescence intensity (FI) relied on Eu<sup>3+</sup> and fluorescence intensity ratio (FIR) relied on dual-emission centers. The maximum relative sensitivities (<em>S</em><sub>Rmax</sub>) reach 1.61 %K<sup>−1</sup> at 426 K for FI at 703 nm, 1.01 %K<sup>−1</sup> at 391 K for FIR of FI at 616 nm and FI at 576 nm, and 2.18 %K<sup>−1</sup> at 501 K for FIR of FI at 703 nm and FI at 576 nm, respectively. These findings demonstrate that Ca<sub>2</sub>GdNbO<sub>6</sub>:Dy<sup>3+</sup>,Eu<sup>3+</sup> samples are prime candidates for fluorescent thermometers.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121482"},"PeriodicalIF":3.6,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of afterglow measurement system using a field emission-type pulsed X-ray source 场发射型脉冲x射线源余辉测量系统的研制
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-21 DOI: 10.1016/j.jlumin.2025.121485
Hiromi Kimura , Takeshi Fujiwara , Ryoichi Suzuki , Hidetoshi Kato
{"title":"Development of afterglow measurement system using a field emission-type pulsed X-ray source","authors":"Hiromi Kimura ,&nbsp;Takeshi Fujiwara ,&nbsp;Ryoichi Suzuki ,&nbsp;Hidetoshi Kato","doi":"10.1016/j.jlumin.2025.121485","DOIUrl":"10.1016/j.jlumin.2025.121485","url":null,"abstract":"<div><div>We have developed a desktop afterglow measurement system using a coniferous carbon nano-structure-based field emission-type pulsed X-ray source. The system is composed of a pulsed X-ray generator and a detector unit, and the pulsed width of the X-ray was adjustable from a few microseconds up to continuous operation. To demonstrate the performance of this system, the afterglow properties of commercially available scintillators including Tl-doped CsI, Pr-doped Gd<sub>2</sub>O<sub>2</sub>S (sheet and ceramic forms), Bi<sub>4</sub>Ge<sub>3</sub>O<sub>12</sub>, CdWO<sub>4</sub> were evaluated. The obtained afterglow profiles were comparable to those in previous studies. Furthermore, the effect of the X-ray pulse width on the afterglow was confirmed.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121485"},"PeriodicalIF":3.6,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly efficient orange and white organic light-emitting devices based on exciplex-assisted multilayer thermally activated delayed fluorescence sensitization strategy 基于显子辅助多层热激活延迟荧光敏化策略的高效橙色和白色有机发光器件
IF 3.6 3区 物理与天体物理
Journal of Luminescence Pub Date : 2025-08-21 DOI: 10.1016/j.jlumin.2025.121484
Qianqian Gu , Xiaolin Hu , Mengmeng Zhang , Yafei Xie , Liping Yang , Jintao Wang , Ren Sheng , Ping Chen
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