Journal of LuminescencePub Date : 2026-04-01Epub Date: 2026-01-03DOI: 10.1016/j.jlumin.2026.121736
Yuhong Xie , Yiying Wang , Yourong Zhao , Jiali Yang , Yangchun Fan , Hongda Li , Daojiang Gao , Zhanglei Ning
{"title":"Electrostatic self-assembled rhodamine B functionalized terbium-based MOFs for highly sensitive detection of sulfide ions","authors":"Yuhong Xie , Yiying Wang , Yourong Zhao , Jiali Yang , Yangchun Fan , Hongda Li , Daojiang Gao , Zhanglei Ning","doi":"10.1016/j.jlumin.2026.121736","DOIUrl":"10.1016/j.jlumin.2026.121736","url":null,"abstract":"<div><div>In this study, a dual-emission ratiometric fluorescent materials, rhodamine B-functionalized terbium-based metal-organic frameworks (RhB@Tb-MOFs), were synthesized through an ultrasonic immersion approach. The resulting RhB@Tb-MOFs demonstrate a distinct red-green dual emission, generating an easily distinguishable orange-red luminescence with excellent stability across a wide pH range and aqueous environments. This novel probe demonstrates excellent selectivity along with outstanding anti-interference capability, achieving a detection limit as low as 0.219 μM for S<sup>2−</sup>. Moreover, the sensing mechanism was studied in detail, which is attributed to a dynamic quenching mechanism. This study highlights a versatile and generalizable approach for enhancing luminescence-based sensing performance through the encapsulation of fluorescent dyes in Ln-MOFs, presenting significant potential for environmental monitoring and bioanalytical applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121736"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940591","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2026-01-03DOI: 10.1016/j.jlumin.2026.121734
Siyuan Fu , Hong Ming , Haorui Zhu , Kaiyu Huang , Hanqi Yao , Zhen Chen , Xiaofeng Liu , Huidan Zeng
{"title":"Organic-inorganic hybrid perovskite as a self-sacrificing template towards high-quality Cs4PbBr6 green emitters","authors":"Siyuan Fu , Hong Ming , Haorui Zhu , Kaiyu Huang , Hanqi Yao , Zhen Chen , Xiaofeng Liu , Huidan Zeng","doi":"10.1016/j.jlumin.2026.121734","DOIUrl":"10.1016/j.jlumin.2026.121734","url":null,"abstract":"<div><div>Driven by the urgent need for narrow-band green emitters to address the color gamut deficiency in current white light-emitting diodes (WLEDs), in this work we develop a novel precursor-mediated strategy for the controlled synthesis of high-efficiency Cs<sub>4</sub>PbBr<sub>6</sub> perovskite crystals. Unlike conventional methods that often yield mixed phases, we utilize a judiciously designed organic-inorganic hybrid perovskite crystal, (HDA)Cs<sub>2</sub>Pb<sub>3</sub>Br<sub>10</sub> (HDA = 1,6-hexanediamine), as a self-sacrificing template for the synthsis of high purity Cs<sub>4</sub>PbBr<sub>6</sub> crystals. By precisely adjusting the solvent composition (HBr/DMF(N,N-Dimethylformamide) ratio) during the dissolution-recrystallization process, selective and controllable phase conversion of the hybrid perovskite to Cs<sub>4</sub>PbBr<sub>6</sub> or CsPbBr<sub>3</sub> was achieved. Specifically, the resulting high-quality Cs<sub>4</sub>PbBr<sub>6</sub> crystals exhibit a high photoluminescence quantum yield (PLQY) of up to 94 %. The phase transition mechanism systematically investigated through combined spectroscopic methods unravels that the transformation into all-inorganic perovskites benefits from the stripping of the HDA<sup>2+</sup> organic interlayer by the DMF solvent, while the formation of high-quality Cs<sub>4</sub>PbBr<sub>6</sub> crystals is attributed to the Pb-deficient environment provided by HBr and DMABr (Dimethylammonium bromide). Furthermore, a prototype WLED device fabricated with the obtained Cs<sub>4</sub>PbBr<sub>6</sub> crystals and commercial K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> phosphor demonstrated a high luminous efficiency of 98.04 lm/W and an extensive color gamut covering 136 % of National Television System Committee (NTSC) and 101.6 % of Rec.2020 (derived from the photoluminescence spectra after passing RGB optical filters). These results highlight the potential of the Cs<sub>4</sub>PbBr<sub>6</sub> crystals for application in advanced wide-color-gamut displays.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121734"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940592","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2026-01-08DOI: 10.1016/j.jlumin.2026.121735
Erdem Uzun , Zehra Özdemir , Esra Özturk
{"title":"Thermoluminescence properties of some aluminate based persistent luminescence phosphors","authors":"Erdem Uzun , Zehra Özdemir , Esra Özturk","doi":"10.1016/j.jlumin.2026.121735","DOIUrl":"10.1016/j.jlumin.2026.121735","url":null,"abstract":"<div><div>Thermoluminescence properties of aluminate based persistent luminescence phosphors such as Sr<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>3+</sup>,Ho<sup>3+</sup>, Sr<sub>2.99</sub>Ba<sub>0.01</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>3+</sup>,Ho<sup>3+</sup>, Sr<sub>2.99</sub>Mg<sub>0.01</sub>Al<sub>2</sub>O<sub>6</sub>:Eu<sup>3+</sup>,Ho<sup>3+</sup>, Ba<sub>3</sub>Al<sub>8</sub>O<sub>15</sub>:Eu<sup>3+</sup>,Dy<sup>3+</sup>, Ca<sub>3</sub>Al<sub>8</sub>O<sub>15</sub>:Eu<sup>3+</sup>,Dy<sup>3+</sup>, and Mg<sub>3</sub>Al<sub>8</sub>O<sub>15</sub>:Eu<sup>3+</sup>,Dy<sup>3+</sup> were investigated. Natural thermoluminescence emission, reusability, the effects of alpha-beta irradiation on the glow curve, and fading properties were analysed. Peak position, variable dose and glow curve fitting methods were applied to the phosphors and fundamental trapping parameters were calculated. Phosphors were irradiated up to the saturation dose level, and the concentrations of electron traps were measured experimentally. An energy-band configuration containing 7 active electron traps, corresponding to the 7 TL peaks observed experimentally, has been proposed to explain the theoretical TL glow curve in the materials. The phosphors show a natural thermoluminescence emission; however, this disappears following a heating treatment. The glow curves of the phosphors have seven distinct glow peaks and many low and high-temperature satellite maximums. It was observed that the individual TL peaks originate from the Eu-doped alumina, and Sr, Ba, Ca, Dy and Ho impurities did not change the individual peak temperatures of the matrix material or produce a new glow peak. However, the peak intensities are highly sensitive to the presence of dopants. It has been observed that alpha radiation affects relatively shallow electron traps more strongly, resulting in the TL glow peaks appearing at lower temperatures. The phosphors show both normal and abnormal fading characteristics during both short-term and long-term storage.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121735"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978929","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2026-01-07DOI: 10.1016/j.jlumin.2026.121751
Mahmoud A. Khalifa , Mahmoud Abdelfatah , Mohamed A. Habib , Abdelhamid El-Shaer
{"title":"Revealing defects in Cu2O microstructures: Temperature-dependent photoluminescence insights from pH-tuned facet engineering Cu2O","authors":"Mahmoud A. Khalifa , Mahmoud Abdelfatah , Mohamed A. Habib , Abdelhamid El-Shaer","doi":"10.1016/j.jlumin.2026.121751","DOIUrl":"10.1016/j.jlumin.2026.121751","url":null,"abstract":"<div><div>Temperature-dependent photoluminescence (TDPL) provides powerful insight into the optical features of semiconductors. In this work, we investigate the impact of solution pH (9–13) on structural, morphological, and photoluminescence (PL) properties of Cu<sub>2</sub>O micrograins, with a particular focus on how these PL changes are obvious at low temperatures (14 K–290 K). X-ray diffraction and scanning electron microscopy results reveal a pH-induced transition in preferred orientation from (200) to (111) facets, accompanied with morphological evolution from small to large micrograins. TDPL measurements uncover distinct recombination mechanisms; besides the near-band excitonic transitions of Cu<sub>2</sub>O, two strong emission bands related to relaxed excitons at oxygen and copper vacancies are noticed. At 14 K, the pH 9 sample displays a broad PL emission centered at 748 nm, attributed to oxygen vacancies. In contrast, the pH 13 sample displays two distinct peaks at 680 nm and 849 nm, corresponding to oxygen and copper vacancies, respectively. These defect-related emissions are absent in the room-temperature PL spectra. Furthermore, the activation energies (E<sub>a</sub>) of these vacancies, determined using the Arrhenius model, are 29.9 meV for oxygen vacancies in the pH 9 sample, and 19.2 meV (oxygen vacancies) and 39.4 meV (copper vacancies) for the pH 13 sample. These results of correlation thermal PL behavior with structural modulation highlight an effective strategy for tuning the defects in Cu<sub>2</sub>O and underscore the value of TDPL in resolving emission pathways relevant to tunable optoelectronic applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121751"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940590","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2025-12-31DOI: 10.1016/j.jlumin.2025.121733
Arindam Halder
{"title":"583 nm laser using Dy-doped silica fibre: Study of fibre fabrication, absorption and emission spectra, yellow laser, photodarkening and related spectral changes","authors":"Arindam Halder","doi":"10.1016/j.jlumin.2025.121733","DOIUrl":"10.1016/j.jlumin.2025.121733","url":null,"abstract":"<div><div>We present a cladding-pumped (at 445 nm) Dysprosium (Dy)-doped germano-alumino-silicate fibre (DGAF) laser operating at 583 nm, producing 148 mW of output power with 3.24 % slope efficiency. The DGAFs with 125 μm cladding, 8–10 μm core, and ∼0.13 NA were fabricated in-house using modified chemical vapour deposition process with solution doping technique (MCVD-SD). The fabrication steps, Dy<sup>3+</sup> absorption and emission spectra, emission lime times; laser cavity design, laser performances, and photodarkening effect (PD) for DGAFs were discussed. The impact of PD on the 583 nm laser output, laser threshold and efficiency were studied. The influence of different glass modifiers like as magnesium (Mg), yttrium (Y), cerium (Ce), on the PD behavior of the 583 nm laser in DGAFs was investigated. A significant change in background attenuation at 630 nm was observed between pristine and post-PD conditions, ranging from below 50 dB/km to above 100 dB/km. This change was attributed to PD which is believed to be the primary factor affecting the generation a good-quality yellow laser using Dy doped silica fibre. This research will be beneficial for the development of future yellow lasers using Dy-doped silica fibre.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121733"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145877042","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2026-01-05DOI: 10.1016/j.jlumin.2026.121747
Tomasz Uchacz , Paweł Szlachcic , Marcin Andrzejak , Joanna Zams , Piotr Wieczorek , Przemysław Kolek , Katarzyna Stadnicka , Andrzej Danel , Arkadiusz Gut
{"title":"Twist-controlled electronic conjugation in pyrazoloquinoline dyes: Photostable blue emitters with near-unity fluorescence quantum yields","authors":"Tomasz Uchacz , Paweł Szlachcic , Marcin Andrzejak , Joanna Zams , Piotr Wieczorek , Przemysław Kolek , Katarzyna Stadnicka , Andrzej Danel , Arkadiusz Gut","doi":"10.1016/j.jlumin.2026.121747","DOIUrl":"10.1016/j.jlumin.2026.121747","url":null,"abstract":"<div><div>The design of highly fluorescent chromophores has gained notable interest in recent years. In this work, we synthesized two new dyes based on the 1<em>H</em>-pyrazolo[3,4-<em>b</em>]quinoline scaffold, each bearing a sterically twisted phenyl group at the 1-position of the pyrazole ring. By varying the number of methyl substituents on the phenyl ring (1-(2-methylphenyl) and 1-(2,6-dimethylphenyl)), we were able to tune the torsional angle between the phenyl group and the heterocyclic core. This structural control enabled modulation of key photophysical properties, including fluorescence quantum yield, fluorescence lifetime, emission color, and solvatochromism. The reference compound lacking steric hindrance (1-phenyl-pyrazoloquinoline) displayed polarity-dependent blue-green fluorescence, long fluorescence lifetimes (up to 31 ns), and a large excited-state dipole moment (11.4 D). Increasing steric congestion forced the phenyl ring toward a nearly perpendicular orientation (DFT-predicted torsion ∼80°), reducing electronic coupling with the pyrazole core. This electronic decoupling resulted in highly efficient fluorescence, with quantum yields reaching 100 % and lifetimes of ∼14 ns. Consequently, the emission in polar solvents could be systematically tuned from blue-green to deep blue depending on the number of methyl substituents. The dyes exhibited excellent photostability, with only 1.5 % degradation after 6 h of irradiation at 350 nm, as well as high thermal stability and no tendency to aggregate. Furthermore, the investigated compounds maintained near-unity fluorescence quantum yields even when incorporated into a polymer matrix. These features suggest strong potential for optical applications, particularly as fluorescence quantum yield standards. The experimental observations were supported by quantum-chemical calculations, X-ray crystallography, and cyclic voltammetry measurements.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121747"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940088","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2026-01-03DOI: 10.1016/j.jlumin.2026.121737
Warut Chewpraditkul , Nakarin Pattanaboonmee , Weerapong Chewpraditkul , Ongsa Sakthong , Masao Yoshino , Takahiko Horiai , Shunsuke Kurosawa , Kei Kamada , Romana Kucerkova , Alena Beitlerova , Tingsong Li , Yanbin Wang , Chen Hu , Jiang Li , Vlademir Babin , Martin Nikl , Akira Yoshikawa
{"title":"Photo- and X-ray excited luminescence, thermoluminescence and scintillation characteristics of LuGd2Al3Ga2O12:Ce,Mo single crystal scintillators: Influence of Mo co-doping","authors":"Warut Chewpraditkul , Nakarin Pattanaboonmee , Weerapong Chewpraditkul , Ongsa Sakthong , Masao Yoshino , Takahiko Horiai , Shunsuke Kurosawa , Kei Kamada , Romana Kucerkova , Alena Beitlerova , Tingsong Li , Yanbin Wang , Chen Hu , Jiang Li , Vlademir Babin , Martin Nikl , Akira Yoshikawa","doi":"10.1016/j.jlumin.2026.121737","DOIUrl":"10.1016/j.jlumin.2026.121737","url":null,"abstract":"<div><div>Mo co-doped LuGd<sub>2</sub>Al<sub>3</sub>Ga<sub>2</sub>O<sub>12</sub>:Ce,Mo (Mo = 0, 300, 600 ppm) single crystals were grown by the micro-pulling-down method. The optical absorption and X-ray excited luminescence spectra, temperature dependence of photoluminescence decay kinetics, afterglow and thermoluminescence (TL) intensity, and scintillation properties (light yield, LY, and decay time) were investigated. The quenching temperature of 355 K was determined from temperature-dependent photoluminescence decay kinetics in the temperature range of 77–487 K under excitation in the 4f - 5d<sub>1</sub> absorption band of the Ce<sup>3+</sup> ions. Under excitation of 662 keV <em>γ</em> rays, the LuGd<sub>2</sub>Al<sub>3</sub>Ga<sub>2</sub>O<sub>12</sub>:Ce,Mo600 sample showed high LY value of 32,900 photons/MeV, energy resolution of 7.6 %, and scintillation decay time of 119 ns (38 %) + 475 ns (62 %). The lower LY value together with higher contribution of slower scintillation decay component among the samples studied was observed for LuGd<sub>2</sub>Al<sub>3</sub>Ga<sub>2</sub>O<sub>12</sub>:Ce,Mo300 sample, consistently with its higher afterglow intensity and longer de-trapping time of the dominant TL glow peak at 356 K.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121737"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940586","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}
Journal of LuminescencePub Date : 2026-04-01Epub Date: 2025-12-30DOI: 10.1016/j.jlumin.2025.121731
Chou-Yi Hsu , Ghaleb A. Oriquat , Rekha M M , Subhashree Ray , Jayshree Nellore , Vimal Arora , Ibrahim K. Alsulami , Zaid H. Mahmoud
{"title":"Optical-based sensors for monitoring of brain chemistry biomarkers","authors":"Chou-Yi Hsu , Ghaleb A. Oriquat , Rekha M M , Subhashree Ray , Jayshree Nellore , Vimal Arora , Ibrahim K. Alsulami , Zaid H. Mahmoud","doi":"10.1016/j.jlumin.2025.121731","DOIUrl":"10.1016/j.jlumin.2025.121731","url":null,"abstract":"<div><div>Brain chemistry, also known as neurochemistry, refers to the study of the chemical substances and processes within the nervous system, particularly the brain, that influence its function and behavior. These chemicals, including neurotransmitters (NTs) and neuromodulators, play a vital role in communication between neurons and ultimately control everything from movement and thought to emotions and bodily functions. Understanding the specific functions of chemical messengers in brain communication requires highly precise tools capable of measuring the concentration and release patterns of neurotransmitters and neuromodulators. Optical (bio)sensors are emerging as powerful tools for monitoring brain chemistry with high spatial and temporal resolution, offering unprecedented insights into brain function and disease. Here we present a comprehensive review of nano optical biosensors that can be helpful for brain neurochemical monitoring through sensitive detection of NTs and neuromodulators.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"292 ","pages":"Article 121731"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883740","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}
Journal of LuminescencePub Date : 2026-03-01Epub Date: 2025-12-18DOI: 10.1016/j.jlumin.2025.121705
Guangkuan Zhu , Fengxian Liang , He Zhao , Shu Han , Qiping Feng , Yuehui Liu , Mengmeng Zhang , Xueming Li
{"title":"Imidazole-based organic room-temperature phosphorescent materials with efficient emission at trace doping for information encryption","authors":"Guangkuan Zhu , Fengxian Liang , He Zhao , Shu Han , Qiping Feng , Yuehui Liu , Mengmeng Zhang , Xueming Li","doi":"10.1016/j.jlumin.2025.121705","DOIUrl":"10.1016/j.jlumin.2025.121705","url":null,"abstract":"<div><div>Organic room temperature phosphorescent (RTP) materials have attracted extensive attention in the fields of anti-counterfeiting, optical display and biological imaging due to their unique optical properties. The benzimidazole group can effectively enhance the intersystem crossing efficiency and become the key framework for the development of efficient organic room temperature phosphorescent materials. In this study, a doping system with N-methyl-4-bromobenzamide (<strong>BMB</strong>) as the host and a polysubstituted benzimidazole derivative (<strong>PBM-R</strong>) as the guest was constructed, which had a phosphorescence lifetime of up to 433 ms and a phosphorescence quantum yield of up to 48 %. Importantly, the <strong>BMB</strong> host acts as an energy-transfer mediator, enabling the efficient generation of triplet excitons in the guest molecules through host-to-guest triplet-triplet energy transfer (TTET). Notably, significant phosphorescence emission was retained even at low guest-doping concentrations, with host-to-guest mass ratios up to 10,000:1. These materials have been successfully applied to the information storage and encryption system, which provides a new idea for the development of efficient RTP materials.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121705"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838650","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}
Journal of LuminescencePub Date : 2026-03-01Epub Date: 2025-12-15DOI: 10.1016/j.jlumin.2025.121702
Zichun Zhou, Chen Ming, Yi-Yang Sun
{"title":"High-throughput screening of violet-light-excitable phosphors driven by graph neural network","authors":"Zichun Zhou, Chen Ming, Yi-Yang Sun","doi":"10.1016/j.jlumin.2025.121702","DOIUrl":"10.1016/j.jlumin.2025.121702","url":null,"abstract":"<div><div>The development of novel violet-light-excitable phosphors for next-generation white light-emitting diodes (WLEDs) is often limited by the high computational cost of lanthanide excited-state calculations and the low efficiency of traditional discovery methods. Here, we introduce a data-driven framework based on graph neural networks (GNNs) to accelerate this discovery process. By integrating large language models with data-mining techniques, we constructed a comprehensive database of 822 experimentally verified phosphors (455 Eu<sup>2+</sup> doped and 367 Ce<sup>3+</sup> doped). A systematic benchmark of three GNN architectures (CGCNN, MEGNet, and GATGNN) revealed that the GATGNN model exhibited optimal performance for the Eu<sup>2+</sup> system, achieving a mean absolute error (MAE) of 0.18 eV in emission energy prediction and an area under the ROC curve (AUC) of 0.85 for classifying violet-light-excitable materials. Leveraging this model, we performed a high-throughput screening of 12,558 candidates, resulting in the prediction of 68 novel violet-light-excitable phosphors. This work not only provides an efficient tool to address the blue-light hazard and color-rendering bottlenecks in current WLEDs, but also showcases the power of AI-driven paradigms in accelerating the discovery of functional materials.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121702"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838660","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}