Journal of Luminescence最新文献

{"title":"A significant enhancement in the luminescent properties of Ga2O3:Eu3+ phosphors induced by fluorine-doping","authors":"Duo Chen,&nbsp;Ruiyuan Bi,&nbsp;Lifeng Xun,&nbsp;Xiaopeng Zhao","doi":"10.1016/j.jlumin.2025.121703","DOIUrl":"10.1016/j.jlumin.2025.121703","url":null,"abstract":"<div><div>Building upon an anion doping strategy, this study proposes using F⁻ regulation to enhance the luminescence performance of Ga₂O₃:Eu³⁺ phosphors. To address the contradiction between the low Eu³⁺ characteristic absorption and the strong Ga₂O₃ intrinsic emission induced by charge transfer band (CTB) excitation in traditional Ga₂O₃:Eu³⁺ systems, this study successfully prepared a series of Ga₂O₃:Eu³⁺/F⁻ phosphors with different F⁻ doping concentrations using an oleic acid-assisted solvothermal method combined with high-temperature sintering. The phases, morphology, structure, and luminescent properties of the samples were systematically analyzed. Experimental results show that F⁻ successfully replaces part of the O²⁻ in the phosphor and alters the local symmetry of Eu³⁺, which results in ⁵D₀→⁷F₁ becoming the main transition path for the characteristic luminescence of Eu³⁺, shifting the main emission peak from 615 nm to 587 nm. Under CTB excitation, F⁻ doping significantly enhanced the Eu³⁺ characteristic emission without significantly altering the Ga₂O₃ matrix emission. Under optimal reaction conditions, the luminescence intensity of the magnetic dipole transition in Ga₂O₃:Eu³⁺/F⁻ phosphor was enhanced approximately 26-fold, with the quantum yield reaching 9.26 % and the ⁵D₀ excited state lifetime increasing to 1.83 ms. This modulation of the emission behavior also caused the phosphor chromaticity to shift from blue-purple to orange. This study demonstrates the selective enhancement mechanism of F⁻ doping in Ga₂O₃:Eu³⁺ luminescence, providing a reference for the design of high-performance rare-earth luminescent materials.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121703"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789710","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}

{"title":"Zero-dimensional organic-inorganic metal chloride (C9H13N2)2MnCl4 with highly efficient yellow emission for white light-emitting diode and flexible X-ray imaging","authors":"Xiaoping Zhou ,&nbsp;Jiangcong Zhou ,&nbsp;Lijuan Xiao ,&nbsp;Zhiwei Tang ,&nbsp;Changlin Cai ,&nbsp;Ting Zhong ,&nbsp;Daying Yu ,&nbsp;Yunfang Zhao ,&nbsp;Rui Zhang","doi":"10.1016/j.jlumin.2025.121718","DOIUrl":"10.1016/j.jlumin.2025.121718","url":null,"abstract":"<div><div>Conventional lead-halide perovskites face persistent challenges of toxicity and instability, severely limiting their applications in commercial X-ray detection and solid-state lighting. This study introduces a novel lead-free, zero-dimensional organic-inorganic manganese(II) chloride, (C₉H₁₃N₂)₂MnCl₄ (C₉H₁₃N₂= PYP). which features strong luminescence, good stability, and high environmental compatibility. This material exhibits a bright yellow emission at 562 nm (full width at half maximum of 87 nm), a high photoluminescence quantum yield of 82.6 % and a long decay lifetime of 2.7 ms. This crystal shows excellent thermal stability, remaining undecomposed up to 240 °C. Moreover, it maintains its structural phase and luminescence intensity after one month of exposure to air. When integrated into a 450 nm InGaN chip, the material enables a stable white-light LED with CIE coordinates of (0.3344, 0.3328), a correlated color temperature of ≈5450 K, a color rendering index (Ra) of 67.6, and a luminous efficacy of 56.37 lm W⁻¹. Moreover, (PYP)₂MnCl₄ functions as a high-gain X-ray scintillator, delivering a light yield of 82,830 photons MeV⁻¹ and showing a linear response across a wide dose-rate range (100–1200 μGy s⁻¹), with a low detection limit of 5.8 μGy s⁻¹. Flexible and transparent composite films fabricated from this material maintain full emission under repeated bending and achieve a spatial resolution of 10 lp mm⁻¹ in X-ray imaging. These results collectively establish (PYP)₂MnCl₄ as a highly promising candidate for next-generation solid-state lighting and high-resolution X-ray imaging technologies.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121718"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838651","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}

{"title":"Femtosecond laser-mediated defect engineering in neutron-irradiated hBN: Molecular dynamics and temperature-dependent annealing investigation","authors":"Yifei Duan ,&nbsp;Jianshi Wang ,&nbsp;Fei Ren ,&nbsp;Mengzhi Yan ,&nbsp;Chengqi Yao ,&nbsp;Bing Dong ,&nbsp;Shaojia Huang ,&nbsp;Wei Zhao ,&nbsp;Tiantian Chen ,&nbsp;Yukun Zhao ,&nbsp;Fu Wang ,&nbsp;Zongwei Xu","doi":"10.1016/j.jlumin.2025.121726","DOIUrl":"10.1016/j.jlumin.2025.121726","url":null,"abstract":"<div><div>As a van der Waals quantum material with a wide bandgap and high stability, hexagonal boron nitride (hBN) demonstrates broad application prospects in quantum sensing and single-photon sources. Among its defects, the boron vacancy defect (<span><math><mrow><msubsup><mi>V</mi><mi>B</mi><mo>−</mo></msubsup><mo>)</mo></mrow></math></span> color centers have attracted significant attention due to their applications in quantum sensing and stability in few-layer hBN. Although conventional thermal neutron irradiation can introduce/induce <span><math><mrow><msubsup><mi>V</mi><mi>B</mi><mo>−</mo></msubsup></mrow></math></span> color centers, its spatial resolution is limited. This makes it difficult to achieve localized control of their concentration or to optimize the defect environment in specific micro-scale regions, hindering their precise integration into devices. Here we demonstrate a synergistic strategy combining femtosecond (fs) laser and thermal neutron irradiation to achieve site-specific modification of pre-irradiated hBN samples. This approach results in a significant enhancement (20–30 %) in <span><math><mrow><msubsup><mi>V</mi><mi>B</mi><mo>−</mo></msubsup></mrow></math></span> photoluminescence (PL) intensity and improves high-temperature stability. Through atomic force microscopy (AFM), PL spectroscopy, optically detected magnetic resonance (ODMR), and molecular dynamics simulations, the mechanism of laser-induced defect enrichment is systematically elucidated. Gradient thermal annealing experiments further confirm that fs-laser irradiation significantly enhances the thermal stability of <span><math><mrow><msubsup><mi>V</mi><mi>B</mi><mo>−</mo></msubsup></mrow></math></span> color centers. This work provides new insights and experimental foundations for the design and fabrication of high-temperature quantum devices based on hBN.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121726"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838655","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}

{"title":"Charge compensation boosts luminous efficiency to achieve ultra-low doped optical thermometer CaWO4: Tb3+ phosphors","authors":"Linlin Li ,&nbsp;Lingxuan Kong ,&nbsp;Jingying Chen ,&nbsp;Zhi Zhu ,&nbsp;Xu Tang ,&nbsp;Xuan Wei ,&nbsp;Hongyue Wu","doi":"10.1016/j.jlumin.2025.121725","DOIUrl":"10.1016/j.jlumin.2025.121725","url":null,"abstract":"<div><div>Optical temperature measurement is crucial in various fields, driving the development of fluorescent thermometer materials that are highly sensitive, environmentally friendly, and cost-effective. This paper investigates a temperature sensitive phosphor material based on CaWO₄: Tb³⁺, which achieves ultra-low doping concentration temperature measurement by co-doping Li⁺ as a charge compensator. A series of CaWO₄: Tb³⁺ phosphors were synthesized using the high-temperature solid-phase method, and their structures and luminescent properties were studied. XRD Rietveld refinement shows that the introduction of Li⁺ leads to a slight reduction in lattice volume, effectively alleviating the lattice distortion caused by Tb³⁺ doping. The photoluminescence spectra show that the introduction of Li⁺ significantly enhances the luminescence intensity of Tb³⁺, as Li⁺ reduces lattice defects and improves luminous efficiency. More importantly, by optimizing the doping concentration, CaWO₄: 0.0005Tb³⁺, 0.0005Li⁺ phosphor was successfully prepared, and high-sensitivity temperature measurement was achieved. The phosphors exhibits excellent fluorescence intensity ratio and chromaticity variation in the temperature range of 293–473 K, with absolute and relative sensitivity reaching 0.21 K⁻¹ at 473 K and 2.2 % K⁻¹ at 473 K, respectively, making it an ideal material for ultra-low doping concentration optical temperature measurement.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121725"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838657","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}

{"title":"Mg-intercalated GaN superlattices enhancing the performance of AlGaN UVC LEDs","authors":"Changde Luo ,&nbsp;Zian Dong ,&nbsp;Xiangshou Zeng ,&nbsp;Zhangfeng Tao ,&nbsp;Ni Ma ,&nbsp;Jun Li ,&nbsp;Jason Hoo ,&nbsp;Bingdong Pan ,&nbsp;Shiping Guo ,&nbsp;Guojian Ding ,&nbsp;Yang Wang ,&nbsp;Xiaohui Wang ,&nbsp;Haiqiang Jia ,&nbsp;Qiao Wang ,&nbsp;Rong Yang ,&nbsp;Yangfeng Li","doi":"10.1016/j.jlumin.2025.121723","DOIUrl":"10.1016/j.jlumin.2025.121723","url":null,"abstract":"<div><div>The aluminum gallium nitride (AlGaN) ultra-violet light-emitting diodes (UV LEDs) emitting at the UVC range render environmentally-friendly efficient sterilization, disinfection, and water purification. However, the high activation energy of magnesium (Mg) in p-AlGaN hinders the improvement of UVC LEDs. In this study, we demonstrate a Mg-delta doping in p-AlGaN to reduce the reverse leakage current and augment the light-output power of UVC LEDs. The UVC LEDs incorporating this design exhibit a significant reduction in reverse leakage current by 71 % and a notable enhancement in light output power (LOP) compared to conventional devices. The Mg-intercalated GaN superlattices structure has been observed by scanning transmission electron microscopy (STEM), which will both increase the hole concentration and mobility in AlGaN, thus leading to an outperforming performance of UVC LEDs.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121723"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838649","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}

{"title":"Efficient blue-to-UV-B up-conversion in Li2CaSiO4:Pr,Gd,Na","authors":"Christoph Rick,&nbsp;Thomas Jüstel","doi":"10.1016/j.jlumin.2025.121700","DOIUrl":"10.1016/j.jlumin.2025.121700","url":null,"abstract":"<div><div>The present work concerns the efficient blue-to-UV-B up-conversion in the host material Li₂CaSiO₄ by co-doping with Pr³⁺ and Gd³⁺. The focus is on excitation with a 488 nm laser diode, which initiates a multi-stage energy transfer process resulting in intense emission in the UV-B range at 311 nm. The maximum emission intensity was observed at a Gd³⁺ doping level of 10 mol%. The spectral analyses demonstrate an efficient, non-radiative energy transfer from the Pr³⁺ to the Gd³⁺ ion as the central mechanism of this process. The up-conversion emission achieved is primarily based on a two-photon process, which is triggered particularly effectively by the high-power density of the laser light. These results emphasise the potential of the investigated materials for applications in photomedical therapy and UV-based disinfection, where compact laser systems can be used.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"291 ","pages":"Article 121700"},"PeriodicalIF":3.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145838658","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}

{"title":"Mastering the suppression of the phosphorescence of Pr-doped aluminum-gallium Gd1.5Y1.5Al2Ga3O12 ceramic scintillators","authors":"M. Korzhik ,&nbsp;V. Smyslova ,&nbsp;A. Bondarau ,&nbsp;V. Dubov ,&nbsp;E. Borisevich ,&nbsp;K. Ivanovskikh ,&nbsp;P. Karpuyk ,&nbsp;I. Komendo ,&nbsp;V. Pustovarov ,&nbsp;D. Tavrunov ,&nbsp;Y. Talochka","doi":"10.1016/j.jlumin.2025.121674","DOIUrl":"10.1016/j.jlumin.2025.121674","url":null,"abstract":"<div><div>The radioluminescence and phosphorescence of Gd_1.5Y_1.5Al₂Ga₃O₁₂ transparent scintillation ceramics doped with Pr³⁺, Ce³⁺, or their combination, as well as co-doped with Mg²⁺ were investigated for the first time. The results demonstrate that phosphorescence, which is a well-known phenomenon in Pr³⁺-doped aluminum-gallium garnets, can be effectively suppressed by introduction of Ce³⁺ ions and a small concentration of Mg²⁺ in the ceramics. The yield of radioluminescence of Ce³⁺ and Pr³⁺ co-doped ceramics was found to exceed a little that of ceramics doped solely with Ce³⁺, showing a low dependence on dopant concentration. The study also reveals that the Gd sublattice plays a crucial role in energy transfer between doping ions. Mg²⁺ co-doping acts similarly to the aluminum-gallium garnets solely doped with Ce; it suppresses phosphorescence in Pr³⁺-doped polycationic garnets resulting in sufficient diminishing of the afterglow level. Developed materials maintain high scintillation efficiency which makes them promising for applications in radiation detection.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"290 ","pages":"Article 121674"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145610620","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}

{"title":"Excellent aggregation-induced emission and mechanofluorochromic performances of donor–acceptor luminophores functionalized with tetraphenylethene","authors":"Juanfang Zhou ,&nbsp;Zhihao Zhou ,&nbsp;Meng Li ,&nbsp;Yanhong Zhou ,&nbsp;Xiaohan Ma ,&nbsp;Dehao Xie ,&nbsp;Xingliang Liu ,&nbsp;Defang Xu","doi":"10.1016/j.jlumin.2025.121667","DOIUrl":"10.1016/j.jlumin.2025.121667","url":null,"abstract":"<div><div>Two novel D-A type MFC molecules, <strong>BTPEBZBP</strong> and <strong>BTPECEBP</strong>, incorporating tetraphenylethylene units, were synthesized via a unified synthetic route. Both compounds exhibit pronounced ICT characteristics and significant AIE behavior, with AIE factors exceeding 135 and 58, respectively. Notably, they demonstrate exceptional MFC performance. The pristine powders of <strong>BTPEBZBP</strong> and <strong>BTPECEBP</strong> display intense blue and yellow-green luminescence, correspondingly. Mechanical grinding causes their luminescence colors to transform to green and orange-red, respectively. The fluorescence peaks exhibit redshifts, shifting from 461 nm to 533 nm–504 nm and 594 nm, accordingly. Additionally, the solid-state emission efficiencies of <strong>BTPEBZBP</strong> and <strong>BTPECEBP</strong> notably elevate from 0.135 to 0.174 to 0.175 and 0.385, respectively, upon mechanical stimulation. <strong>BTPEBZBP</strong> exhibits reversible MFC characteristics when exposed to DCM vapors, while ground <strong>BTPECEBP</strong> samples transition to Y-powders emitting yellow fluorescence with the wavelength of about 567 nm under DCM vapor fuming, demonstrating three-color fluorescence switching. The MFC properties of both compounds arise primarily from the transformation between crystalline and non-crystalline states. The detected bathochromic shift in PL spectra stems from a decreased bandgap, which results from extended π-conjugation, enhanced PICT effects, strengthened π-π stacking, and elevated exciton coupling coupled with stronger orbital overlap between adjacent molecules.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"290 ","pages":"Article 121667"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692176","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}

{"title":"Organic doping-based optimization of triplet radioluminescence of Tb3+/Ga3+ metallacrown scintillators for X-Ray detection","authors":"Mengke Bai ,&nbsp;Wenya Lai ,&nbsp;Fei Zhou ,&nbsp;Hangqing Xie ,&nbsp;Jing Xu ,&nbsp;Jiadi Lian ,&nbsp;Shiqing Xu","doi":"10.1016/j.jlumin.2025.121677","DOIUrl":"10.1016/j.jlumin.2025.121677","url":null,"abstract":"<div><div>Triplet excitons serve as a critical pathway for harvesting energy released during X-ray interactions with heavy elements; however, strategies to enhance their activation efficiency remain limited. Herein, we report a novel organic doping approach to optimize the triplet radioluminescence (RL) of Tb³⁺/Ga³⁺ metallacrown (Tb-1) scintillators. By introducing 1,2,4,5-benzenetetracarboxylic acid (PMA) as a ligand dopant, a new scintillation crystal, Tb-1-PMA, is synthesized. Compared to the Tb-1 crystal, Tb-1-PMA exhibits a significant reduction in metal content while maintaining structural integrity. When excited by ultraviolet light or X-rays, Tb-1-PMA crystal emit bright green light, and the photoluminescence quantum yield (PLQY) is increased from 36.8 % to 45.3 %. The RL intensity of Tb-1-PMA surpasses that of Tb-1 by 50 %, achieving a relative light yield of 17,000 photons MeV⁻¹, accompanied by nearly eliminated afterglow. These enhancements stem from improved energy-level alignment between organic triplet excitons and Tb³⁺ in Tb-1-PMA, enabling efficient energy transfer. The RL intensity demonstrates a linear response to X-ray dose rates, with a detection limit of 0.044 μGy s⁻¹, approximately 123-fold lower than conventional diagnostic doses. This work provides a cost-effective and scalable strategy for designing organic-doped high-performance triplet-emitting scintillators.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"290 ","pages":"Article 121677"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145622804","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}

{"title":"Design of dual-mode optical thermometry using Sb3+/Mn2+ codoped Cs2NaLuCl6 double perovskite","authors":"Zehua Zhang,&nbsp;Lili Wang,&nbsp;Ruiliang Zuo,&nbsp;Zhenzhen Jiang,&nbsp;Guangyong Jin","doi":"10.1016/j.jlumin.2025.121687","DOIUrl":"10.1016/j.jlumin.2025.121687","url":null,"abstract":"<div><div>Wide band emission has aroused widespread focus in various fields such as display, plant lighting, and solar cells due to its spectral continuity. Here, a series of Sb³⁺/Mn²⁺ doped Cs₂NaLuCl₆ double perovskites with wide blue and red emissions were synthesized through a precipitation method. Enhanced self-trapped exciton (STE) emission and red emission of Mn²⁺ ion are achieved by doping Sb³⁺ ion to construct energy transfer channels. The temperature dependent fluorescence spectra exhibit that the emission intensity at 418 K remains 66.4% of that at 298 K in Cs₂NaLuCl₆: 1% Sb³⁺, 10% Mn²⁺ microcrystal. Importantly, the full-width at half-maximum (FWHM) of STE and Mn²⁺ ion emissions show obvious broadening as the temperature increases, which is attributed to the enhanced electron-phonon interaction. The optical temperature sensing method based on FWHM of STE and Mn²⁺ emissions is designed, the corresponding maximum relative sensitivity (<em>S</em>_r) values are 0.14% at 298 K and 0.61% at 448 K, respectively. Furthermore, due to the fluorescence intensity ratio (FIR) between STE and Mn²⁺ ion is highly temperature-dependent, the temperature sensing based on FIR technique is investigated. The maximum <em>S</em>_r values reach 1.31% K⁻¹ at 448 K under 317 nm excitation. The minimum temperature resolution (<em>δT</em>) is calculated as 0.26 K at 448 K. The dual-mode temperature measurement methods based on FWHM and FIR can achieve more accurate remote temperature measurement. These results indicate the microcrystal has potential application in the fields of optical temperature thermometry.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"290 ","pages":"Article 121687"},"PeriodicalIF":3.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692178","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}