Journal of Luminescence最新文献_第6页

Europium complex with β-diketone and diphenylphosphinate ligands: Investigating its X-ray excited optical luminescent properties

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-24 DOI: 10.1016/j.jlumin.2025.121207

Douglas Scarabello , Alessandro B.S. Garcia , Rodolpho A.N. Silva , Vagner A. Moralles , Luis F.B. Bim , Ana M. Pires , Marian R. Davolos , Marco A. Cebim

{"title":"Europium complex with β-diketone and diphenylphosphinate ligands: Investigating its X-ray excited optical luminescent properties","authors":"Douglas Scarabello , Alessandro B.S. Garcia , Rodolpho A.N. Silva , Vagner A. Moralles , Luis F.B. Bim , Ana M. Pires , Marian R. Davolos , Marco A. Cebim","doi":"10.1016/j.jlumin.2025.121207","DOIUrl":"10.1016/j.jlumin.2025.121207","url":null,"abstract":"<div><div>Diphenylphosphinate ligand can effectively replace water molecules in coordination compounds with trivalent rare earth cations. This study investigates the synthesis and characterization of coordination compounds containing trivalent rare earth cations using β-diketones and diphenylphosphinate as ligands. The synthesized compounds yielded crystalline materials with distinct luminescent properties. Europium complexes exhibited intense red emission, underscoring their potential applications in displays and lighting. FT-IR spectroscopy confirmed the coordination of ligands to rare earth cations, while UV–Vis diffuse reflectance analysis provided insights into their electronic transitions. Analysis of excited state lifetimes and theoretical Anrad values suggested minimal presence or absence of deactivating groups like water molecules and Csp3-H bonds in the synthesized materials. The scintillation properties of these compounds were evaluated, indicating their suitability for scintillators and X-ray-induced photodynamic therapy. The [Eu-dpp] fragment efficiently absorbs X-rays and emits visible radiation, generating singlet oxygen (1O2) for therapeutic applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121207"},"PeriodicalIF":3.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714946","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

A NIR-to-NIR Ca2ZrSi4O12:Yb3+ phosphor security fiber with high thermal stability for anti-counterfeiting applications

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-23 DOI: 10.1016/j.jlumin.2025.121203

Tae Wook Kang , Kyungdo Back , Young Ji Park , Seon Tae Kim , Byungseo Bae , Sun Woog Kim

{"title":"A NIR-to-NIR Ca2ZrSi4O12:Yb3+ phosphor security fiber with high thermal stability for anti-counterfeiting applications","authors":"Tae Wook Kang , Kyungdo Back , Young Ji Park , Seon Tae Kim , Byungseo Bae , Sun Woog Kim","doi":"10.1016/j.jlumin.2025.121203","DOIUrl":"10.1016/j.jlumin.2025.121203","url":null,"abstract":"<div><div>Near-infrared (NIR) excitation to NIR emission (NIR-to-NIR) can be applied in diverse fields, specifically anti-counterfeiting technologies, owing to its security feature. In this study, Yb3+-doped Ca2ZrSi4O12 was synthesized as a novel NIR-to-NIR phosphor via a conventional solid-state reaction. The synthesized Ca2ZrSi4O12:Yb3+ phosphor exhibited a monoclinic structure, as the primary phase, and an angular morphology with an average particle size of 5–10 μm. It showed three excitation bands in the ultraviolet and infrared regions due to the charge-transfer and 2F7/2 → 2F5/2 transitions of the Yb3+ ions. The emission spectra obtained under 915 nm NIR excitation displayed a strong NIR emission band in the 950–1050 nm range, which correspond to the 2F5/2 → 2F7/2 transition of Yb3+ ions. The Ca2ZrSi4O12:Yb3+ phosphor exhibited excellent thermal stability, maintaining 84.5 % of its initial emission intensity at 375 °C, and showed minimal thermal degradation upon subsequent cooling. Finally, a masterbatch comprising the Ca2ZrSi4O12:Yb3+ phosphor as an additive was manufactured for anti-counterfeiting applications, and its NIR-to-NIR emission characteristics were confirmed. Thus, Ca2ZrSi4O12:Yb3+ phosphors are promising for sophisticated anticounterfeiting technologies.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121203"},"PeriodicalIF":3.3,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726126","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

Unveiling the influence mechanisms of halogen ion exchange reaction kinetic on the stability of the perovskite CsPbBrx(Cl or I)3-x nanocrystals

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-22 DOI: 10.1016/j.jlumin.2025.121204

Miao Zhang , Lei Gu , Jingyun Zhang , Qingmei Su , Jiaheng Yang , Gaowei Chen , Chunyang Liu , Yingjun Yang , Gaohui Du , Bingshe Xu , Hongyue Wang

{"title":"Unveiling the influence mechanisms of halogen ion exchange reaction kinetic on the stability of the perovskite CsPbBrx(Cl or I)3-x nanocrystals","authors":"Miao Zhang , Lei Gu , Jingyun Zhang , Qingmei Su , Jiaheng Yang , Gaowei Chen , Chunyang Liu , Yingjun Yang , Gaohui Du , Bingshe Xu , Hongyue Wang","doi":"10.1016/j.jlumin.2025.121204","DOIUrl":"10.1016/j.jlumin.2025.121204","url":null,"abstract":"<div><div>The electronic structure of lead-halide perovskite nanocrystals (NCs) could be tailored to enable the tunable photoluminescence (PL) in the window from ultraviolet–visible–near infrared by halogen ion exchange reaction, which has been considered as the most effective and convenient post-treatment method for manipulating the chemical composition of the perovskite. However, the perovskite NCs with such post-treatment of ion exchange are generally not stable, and the mechanism of how the exchange reaction kinetic influences the stability of perovskite NCs has not been well demonstrated. In this work, we show that the Cl diffusion limited process in CsPbBr3 NCs is dependent on the Cl concentration in the solution, the Br/Cl ion exchange reaction is relatively gentle and ordered, which give rises a stable blue CsPbBrxCl3-x NCs. The competition between rapid alloy process and halogen segregation occurs in the CsPbBrxI3-x red NCs, the halogen segregation is responsible of the NCs degradation showing quenched PL emission after reaction. This work presents a view of interrelationship between reaction kinetic of halogen exchange and the stability of the perovskite NCs, which facilitates to understand and further improve the stability of perovskite and its optoelectronic devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121204"},"PeriodicalIF":3.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686978","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

Achieving three-mode optical thermometry via Sr3La(VO4)3:Eu3+ phosphors

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-22 DOI: 10.1016/j.jlumin.2025.121205

HangYu Fu, JunYu Chen, YuTian Zhang, Hai Guo

{"title":"Achieving three-mode optical thermometry via Sr3La(VO4)3:Eu3+ phosphors","authors":"HangYu Fu, JunYu Chen, YuTian Zhang, Hai Guo","doi":"10.1016/j.jlumin.2025.121205","DOIUrl":"10.1016/j.jlumin.2025.121205","url":null,"abstract":"<div><div>Multi-mode optical thermometry is recently regarded as a promising technique for accurate temperature measurement. In this work, a series of Sr3La1−x(VO4)3:xEu3+ (x = 0–0.10) samples was successfully prepared. Owing to the energy transfer between VO43− groups and Eu3+ ions, Sr3La1−x(VO4)3:xEu3+ phosphors emit emissions from VO43− and Eu3+ synchronously upon excitation with 350 nm light. And the luminescent intensities of VO43− and Eu3+ have different decreasing tendencies as temperature increases. Therefore, fluorescence intensity, fluorescence intensity ratio, and coordinates of Commission Internationale de L'Eclairage modes of Sr3La1−x(VO4)3:xEu3+ thermometry were designed. Notably, their maximum relative sensitivities (SR) reach as high as 2.93 %K−1 @ 320 K, 2.65 %K−1 @ 303 K, and 0.37 %K−1 @ 357 K, respectively. Moreover, SR values of fluorescence intensity and fluorescence intensity ratio modes maintain higher than 1.55 %K−1 and 1.25 %K−1 at temperature range of 303–483 K. Our findings show that Sr3La1−x(VO4)3:xEu3+ phosphors have promising applications for accurate temperature measurement.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121205"},"PeriodicalIF":3.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714939","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 effect of Cr content on the activation energy of order-disorder transition in Mg-Al spinel

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-22 DOI: 10.1016/j.jlumin.2025.121201

Chengsi Wang , Xin-Yi Chen , Jiling Zhou , Jingcheng Pei , Andy H. Shen

{"title":"The effect of Cr content on the activation energy of order-disorder transition in Mg-Al spinel","authors":"Chengsi Wang , Xin-Yi Chen , Jiling Zhou , Jingcheng Pei , Andy H. Shen","doi":"10.1016/j.jlumin.2025.121201","DOIUrl":"10.1016/j.jlumin.2025.121201","url":null,"abstract":"<div><div>The order-disorder transition (ODT) in spinel is a critical physical characteristic that significantly affects its properties and applications. Although activation energy—a key thermodynamic parameter of ODT—is reported to be influenced by Cr content, the relationship between these two factors remains unclear. In this work, six natural Mg-Al spinel samples with varying Cr contents were studied. Each sample was cut into eight slices and heated to seven different temperatures (550–850 °C), creating a stepwise increase in the degree of disorder. Photoluminescence (PL) spectra were subsequently collected at liquid nitrogen temperature. The intensity of the N peaks in the zero-phonon line range and the N4 peak increased with increasing Cr content. By integrating parameters extracted from these spectra into a thermodynamic model based on the Arrhenius relationship, we calculated the ODT activation energies for all the samples and established a quantitative relationship between activation energy and Cr content. As a result, we clarify the negative correlation between ODT activation energy and Cr content in Mg-Al spinel, which may be attributed to local structural distortion caused by the presence of Cr-pairs. This study provides a method to correct the influence of Cr content on ODT thermodynamic models, thereby enhancing the viability of spinel as geothermometers and deepening the scientific understanding of how elemental composition affects the thermal stability of spinel.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121201"},"PeriodicalIF":3.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686976","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

Fluorescence property and multifaceted applications of an aggregation-induced emission organic small molecule multifunctional material

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-21 DOI: 10.1016/j.jlumin.2025.121202

Yue Tang , Jinghua Zhang , Qijuan Xiong , Guoliang Xie , Shi Jin , Jun Zheng , Ruilin Rong , Qing Liu , Shangrong Zhang , Dongliang Tao , Feng Jin

{"title":"Fluorescence property and multifaceted applications of an aggregation-induced emission organic small molecule multifunctional material","authors":"Yue Tang , Jinghua Zhang , Qijuan Xiong , Guoliang Xie , Shi Jin , Jun Zheng , Ruilin Rong , Qing Liu , Shangrong Zhang , Dongliang Tao , Feng Jin","doi":"10.1016/j.jlumin.2025.121202","DOIUrl":"10.1016/j.jlumin.2025.121202","url":null,"abstract":"<div><div>Compared with traditional fluorescent materials exhibiting aggregation-caused quenching (ACQ), small organic molecules with aggregation-induced emission (AIE) characteristics demonstrate significant advantages in biomedical detection due to their special structures and optical properties. However, the single functionality of fluorescent materials can no longer meet the demands of multiple applications. The development of multifunctional materials is expected to become a major research focus. In this paper, a D-π-A organic small molecule (E)-9-Butyl-3-(2-(pyridin-4-yl)vinyl)-9H-carbazole (PC) was designed and synthesized through the Wittig reaction. In the molecule, modified carbazole group served as the electron donor (D) and pyridine as the electron acceptor (A). The results of X-ray single crystal diffraction, spectral measurements and theoretical calculations demonstrate that PC exhibits excellent aggregation-induced emission properties, attributed to its J-aggregation stacking model. Furthermore, PC was found to exhibit acid-stimulated fluorescence response properties, which expands its potential applications in encrypted information transmission, fluorescent ink, and cell imaging, thereby injecting new vitality into the field of multifunctional materials.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121202"},"PeriodicalIF":3.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696824","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

Racah parameters and Tanabe−Sugano energy-level diagram: Effects of the different host-lattice cation species on the crystal-field strength parameters

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-20 DOI: 10.1016/j.jlumin.2025.121194

Sadao Adachi

{"title":"Racah parameters and Tanabe−Sugano energy-level diagram: Effects of the different host-lattice cation species on the crystal-field strength parameters","authors":"Sadao Adachi","doi":"10.1016/j.jlumin.2025.121194","DOIUrl":"10.1016/j.jlumin.2025.121194","url":null,"abstract":"<div><div>The Racah parameters in conjunction with the Tanabe−Sugano (T−S) energy-level diagram are widely used as a means of explaining the effects of electron−electron repulsion within the metal complexes in coordination chemistry. For the determination of the Racah parameters (B, C) and crystal-field splitting parameter (Dq), the three excited-state zero-phonon line (ZPL) energies, E(2Eg)ZPL, E(4T2g)ZPL, and E(4T1g,a)ZPL, are required. However, it is very difficult to accurately determine such excited-state ZPL energies from optical spectra. Although a revised model [J. Lumin. 218 (2020) 116,829] was proposed to overcome this by properly assuming the Racah parameter ratio of r = C/B and demonstrated its effectiveness, no detailed discussion has been paid to its validation. The present study focuses on this problem and analyzes some representative data of the Mn4+ and Cr3+-activated phosphors, such as K2−IV−F6:Mn4+ and Na3−IV−F6:Cr3+ with IV = Si, Ge, and Sn. The effects of different r values on the 3d3−ligand characteristics are discussed in detail. The non-dimensional Racah parameter β1 is introduced to examine in more detail the acceptability and superiority of the revised models. Our proposed model reveals the ever-unknown relationships between the Racah parameters and T−S diagram that are important for deeply understanding the various 3d3-ion-activated phosphor properties and their potential applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121194"},"PeriodicalIF":3.3,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714945","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

UV LED-pumped Er3+-doped YOF ceramic powder: Optical thermometry based on the green fluorescence 紫外 LED 泵浦的 Er3+ 掺杂 YOF 陶瓷粉末：基于绿色荧光的光学温度测量法

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-19 DOI: 10.1016/j.jlumin.2025.121198

Nikifor Rakov , Francisco Matias , Glauco S. Maciel

{"title":"UV LED-pumped Er3+-doped YOF ceramic powder: Optical thermometry based on the green fluorescence","authors":"Nikifor Rakov , Francisco Matias , Glauco S. Maciel","doi":"10.1016/j.jlumin.2025.121198","DOIUrl":"10.1016/j.jlumin.2025.121198","url":null,"abstract":"<div><div>Rare-earth based phosphor materials have been studied for photonics applications such as amplification, lighting, and sensing. Among others, erbium (Er3+) doped yttrium oxyfluoride (YOF) is particularly interesting because it combines the multitude of emission lines from Er3+ covering the UV–Vis-IR spectral region with the robust chemical and mechanical properties of YOF material. In this work, Er3+-doped YOF ceramic powders were synthesized via a combustion reaction method and their structural and optical properties were investigated for optical thermometry. Photon down-conversion (DC) mechanism was stimulated by a UV LED emitting at 365 nm. The temperature changes of the DC spectrum in the green region, which corresponds to 4f-4f transitions 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 of Er3+, were investigated using the fluorescence intensity ratio (FIR) approach in air and in water. The experiments were performed in the temperature range of 283–343 K with the highest absolute sensitivity value of 0.24 % K−1 at 343 K and the highest relative sensitivity value of 1.92 % K−1 at 283 K being found. The highest temperature sensitivities were obtained when the FIR approach explored the thermally coupled Stark components from (2H11/2,4S3/2) → 4I15/2 transitions.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121198"},"PeriodicalIF":3.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686998","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

Temperature-induced localized exciton dynamics in inorganic CsPbX3 (X=I, Br, Cl) perovskite nanocrystals

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-19 DOI: 10.1016/j.jlumin.2025.121199

Biswajit Dey , Md. Sherajul Islam , Umama Pervin , Abdullah Al Mamun Mazumder , Takayuki Makino , Jeongwon Park

{"title":"Temperature-induced localized exciton dynamics in inorganic CsPbX3 (X=I, Br, Cl) perovskite nanocrystals","authors":"Biswajit Dey , Md. Sherajul Islam , Umama Pervin , Abdullah Al Mamun Mazumder , Takayuki Makino , Jeongwon Park","doi":"10.1016/j.jlumin.2025.121199","DOIUrl":"10.1016/j.jlumin.2025.121199","url":null,"abstract":"<div><div>The exceptional luminescent properties of inorganic halide perovskites have recently garnered significant attention. This study comprehensively investigates the temperature dependence of the anomalous behavior of localized excitons in inorganic CsPbX3 (X = I, Br, and Cl) perovskite nanocrystals (NCs). A quantitative model has been developed to determine the photoluminescence (PL) peak energy and PL linewidth through a broad temperature range (from 10 K to 300 K) using Monte Carlo simulation of exciton relaxation and hopping processes. Incorporating temperature-induced bandgap expansion allows for a quantitative fit of our computational model to the experimental findings. The PL peak energies of all CsPbX3 NCs exhibit a blue shift due to the localization of excitons in higher energy states at elevated temperatures. On moving from X = I to Br to Cl, the rate of bandgap expansion decreases with temperature, which indicates that the ionic bond between cation and anion becomes stronger, resulting in less shifting in PL peak energy. The PL linewidth is significantly influenced by thermal disorder, resulting in a noticeable increase in the full-width half maximum (FWHM) as the temperature rises. Additionally, it has been observed that excitons in deeper localized states are minimal in CsPbBr3 and CsPbCl3. This study is important in understanding and optimizing the performance, tuning the emission characteristics, and improving the reliability of cesium halide perovskite-based devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121199"},"PeriodicalIF":3.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686975","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

A narrow-band green-emitting LaMgAl11O19:Ce3+, Mn2+ phosphor: Structure, energy transfer and luminescence

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-03-18 DOI: 10.1016/j.jlumin.2025.121191

Wenlong Ma , Wen Hao , Long Zhao , Die Xu , Shuxing Li , Xiaojun Wang

{"title":"A narrow-band green-emitting LaMgAl11O19:Ce3+, Mn2+ phosphor: Structure, energy transfer and luminescence","authors":"Wenlong Ma , Wen Hao , Long Zhao , Die Xu , Shuxing Li , Xiaojun Wang","doi":"10.1016/j.jlumin.2025.121191","DOIUrl":"10.1016/j.jlumin.2025.121191","url":null,"abstract":"<div><div>A narrow-band green-emitting LaMgAl11O19: Mn2+, Ce3+ phosphor was synthesized through high-temperature solid-state reaction. The phase, luminescent properties, and energy transfer mechanism from Ce3+ to Mn2+ in LaMgAl11O19 were systematically investigated. The results reveal that Ce3+ ions serve as effective sensitizers for Mn2+ in LaMgAl11O19, leading to enhanced green emission at 525 nm, upon 320 nm excitation. The energy transfer from Ce3+ to Mn2+ is found to occur via dipole-dipole interactions, with a calculated critical transfer distance of 14.24 Å. The quantum efficiency of the optimized sample reaches 74.3 %, and the phosphor exhibits excellent thermal stability, retaining 92 % of its luminescence intensity at 150 °C. These results indicate the LaMgAl11O19: Mn2+, Ce3+phosphors exhibit high potential for wide color gamut white light-emitting diode (wLED) backlighting applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121191"},"PeriodicalIF":3.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687000","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