Journal of Luminescence最新文献_第4页

A ratiometric fluorescent probe based on oxabenzofluorene structure for the detection of peroxynitrite in mitochondria 基于氧苯并芴结构的比例荧光探针检测线粒体中过氧亚硝酸盐

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-17 DOI: 10.1016/j.jlumin.2025.121258

Xiao-Lei Xue , Yang Wang , Ying Fang , Kun-Peng Wang , Shaojin Chen , Zhi-Qiang Hu

{"title":"A ratiometric fluorescent probe based on oxabenzofluorene structure for the detection of peroxynitrite in mitochondria","authors":"Xiao-Lei Xue , Yang Wang , Ying Fang , Kun-Peng Wang , Shaojin Chen , Zhi-Qiang Hu","doi":"10.1016/j.jlumin.2025.121258","DOIUrl":"10.1016/j.jlumin.2025.121258","url":null,"abstract":"<div><div>As a potent reactive oxygen species (ROS), peroxynitrite (ONOO<sup>−</sup>) is produced when superoxide anions (O<sub>2</sub><sup>•−</sup>) react with nitric oxide (NO). This molecule has been demonstrated to be closely linked to the progression of numerous diseases. Peroxynitrite is highly reactive and quite unstable with a very short half-life, which is primarily found within mitochondria. Therefore, creating a mitochondria-targeted fluorescent probe that can selectively detect peroxynitrite is of great importance. In this work, a ratiometric fluorescent probe <strong>RHON</strong> is designed to detect ONOO<sup>−</sup> both sensitively and selectively. The probe, featuring an oxabenzofluorene-based structure, was efficiently synthesized in a few short steps. After the addition of ONOO<sup>−</sup>, the pinkish-purple colour of the probe solution gradually disappeared and finally became colourless. Simultaneously, a substantial blue shift was observed in the fluorescence emission, covering a range of 115 nm. After thorough evaluations, the probe was found to have outstanding selectivity and sensitivity toward ONOO<sup>−</sup>. Impressively, it can reach an extremely low detection limit of 0.11 nM, and its response time is quite rapid, approximately 1 min. Furthermore, <strong>RHON</strong> exhibits outstanding biocompatibility. Moreover, the exogenous ONOO<sup>−</sup> present in mitochondria of living cells could be successfully detected by this probe. This successful application vividly demonstrates the great potential of <strong>RHON</strong> in the field of biological applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121258"},"PeriodicalIF":3.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869970","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

Optical path coupling regulation of excitation light and LuAG: Ce phosphor ceramics for high-luminous-efficiency laser lighting 高光效激光照明中激发光与LuAG: Ce荧光陶瓷的光路耦合调节

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-15 DOI: 10.1016/j.jlumin.2025.121256

Yiwei Zhu , Yang Li , Tingting Wang , Zhihao Li , Jian Kang , Le Zhang , Jun Zou

{"title":"Optical path coupling regulation of excitation light and LuAG: Ce phosphor ceramics for high-luminous-efficiency laser lighting","authors":"Yiwei Zhu , Yang Li , Tingting Wang , Zhihao Li , Jian Kang , Le Zhang , Jun Zou","doi":"10.1016/j.jlumin.2025.121256","DOIUrl":"10.1016/j.jlumin.2025.121256","url":null,"abstract":"<div><div>In the preparation processes of laser lighting sources, although optimizing phosphor materials remains the primary strategy to enhance phosphor conversion efficiency, the excitation modes applied to these materials have emerged as an equally effective means. In this study, the luminescence performance of a remote LD-based light source was effectively regulated by controlling the exciting distance and exciting angle between phosphor ceramics and blue LD. Under optimized conditions with an exciting distance of 200 mm and an angle of 60°, a maximum LF of 27,124 lm was achieved, corresponding to a calculated LER of 219.6 lm W<sup>−1</sup>. Oblique incidence excitation of phosphor ceramics was found to exhibit significantly enhanced luminescence performance relative to conventional vertical incidence. The operating temperature of the ceramics decreased gradually with increasing exciting angles, primarily due to decreased power density caused by spot size expansion. These findings reveal that tailoring excitation geometry can effectively balance thermal management and optical efficiency in phosphor ceramics-based remote LD systems, offering critical insights for the design of high-power transmission-type packaging devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"283 ","pages":"Article 121256"},"PeriodicalIF":3.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864254","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

Tailoring photophysical properties of low-dimensional CsPbBr3 nanocrystals via solvothermal morphology control 通过溶剂热形态控制调整低维CsPbBr3纳米晶体的光物理性质

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-15 DOI: 10.1016/j.jlumin.2025.121254

Yu Li , Shaoru Shuang , Xiaomeng Jiao , Chao Yu , Chengchun Tang , Jing Lin , Yang Huang

{"title":"Tailoring photophysical properties of low-dimensional CsPbBr3 nanocrystals via solvothermal morphology control","authors":"Yu Li , Shaoru Shuang , Xiaomeng Jiao , Chao Yu , Chengchun Tang , Jing Lin , Yang Huang","doi":"10.1016/j.jlumin.2025.121254","DOIUrl":"10.1016/j.jlumin.2025.121254","url":null,"abstract":"<div><div>All-inorganic CsPbX<sub>3</sub> (X = Cl, Br, I) perovskite nanocrystals with low-dimensional morphologies exhibit unique photophysical properties due to quantum confinement effects. However, systematic studies correlating their structure with photophysical performance have been hindered by the lack of effective synthesis strategy for controllably tailoring their morphologies. Herein, we address this challenge using a simple solvothermal method to synthesize CsPbBr<sub>3</sub> nanowires and nanoplates with controlled size and morphology by solely varying reaction time (30 min–24 h). Prolonged reaction time induces a size-dependent morphological transition from nanowires (∼2 nm diameter) to nanoplates (∼2–3 nm thickness), accompanied by a quantum confinement-mediated redshift in photoluminescence (PL) spectra. Fluorescence lifetime measurements and Urbach energy analysis reveal a reduction in defects within nanoplates compared to nanowires, effectively suppressing non-radiative recombination pathways. Temperature-dependent PL studies further demonstrate that CsPbBr<sub>3</sub> nanoplates exhibit a higher exciton binding energy (320.78 meV), indicating enhanced electron-hole interactions. These findings not only achieve precise morphology modulation but also establish a fundamental structure-property relationship, highlighting the critical role of defect engineering and quantum confinement in tailoring the photophysical performance of low-dimensional perovskite nanocrystals. This work provides a strategic framework for designing high-performance perovskite nanomaterials for advanced optoelectronic applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121254"},"PeriodicalIF":3.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833458","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

Instantaneous luminescence of NV− center in diamond pumped by a femtosecond laser pulse 飞秒激光脉冲泵浦金刚石中NV -中心的瞬时发光

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-14 DOI: 10.1016/j.jlumin.2025.121248

Alexander Savvin , Evgeny Andrianov , Evgenii Tereshchenkov , Vladislav Shishkov , Elizaveta Zaloznaya , Vladimir Mitrokhin , Andrei Fedotov , Viktor Vins , Alexander Dormidonov

{"title":"Instantaneous luminescence of NV− center in diamond pumped by a femtosecond laser pulse","authors":"Alexander Savvin , Evgeny Andrianov , Evgenii Tereshchenkov , Vladislav Shishkov , Elizaveta Zaloznaya , Vladimir Mitrokhin , Andrei Fedotov , Viktor Vins , Alexander Dormidonov","doi":"10.1016/j.jlumin.2025.121248","DOIUrl":"10.1016/j.jlumin.2025.121248","url":null,"abstract":"<div><div>The process of luminescence excitation of negatively charged NV centers in diamond is investigated by the up-conversion method with a femtosecond resolution. Our experimental technique allowed us to register that NV<sup>−</sup> center luminescence starts in the whole 600–800 nm spectral range in a time not exceeding 30 fs after excitation by the second harmonic of the femtosecond ytterbium laser. We have established that there is no time-dependent Stokes shift in the luminescence spectrum of the NV<sup>−</sup> center, which could be caused by relaxation of coherent phonon excitation. A theoretical model of NV<sup>−</sup> center describes the dynamics of the luminescence spectrum due to non-resonant Rabi oscillations of color center polarization and provides a quantitative agreement with experimental data. Thus, NV<sup>−</sup> center is a promising source of quantum light with ultrafast formation of luminescence.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121248"},"PeriodicalIF":3.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833459","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

Investigation of Pr-doped Ca3TaGa3Si2O14 crystal scintillator emitting near infrared light 发射近红外光的掺pr Ca3TaGa3Si2O14晶体闪烁体研究

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-14 DOI: 10.1016/j.jlumin.2025.121255

Ryosei Takahashi, Kai Okazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida

引用次数: 0

Life prediction of LED lights by ADTs combined with luminance degradation and probability statistics 结合亮度退化和概率统计的ADTs对LED灯寿命的预测

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-12 DOI: 10.1016/j.jlumin.2025.121252

Jianping Zhang , Xiaodong Yu , Haonan Zhang , Boren Wang , Jing Wang , Wen Gu , Yinjie Zhang

{"title":"Life prediction of LED lights by ADTs combined with luminance degradation and probability statistics","authors":"Jianping Zhang , Xiaodong Yu , Haonan Zhang , Boren Wang , Jing Wang , Wen Gu , Yinjie Zhang","doi":"10.1016/j.jlumin.2025.121252","DOIUrl":"10.1016/j.jlumin.2025.121252","url":null,"abstract":"<div><div>For the purpose of improving the life accuracy calculated based on accelerated degradation data of light-emitting diodes (LED) lights, three-parameter Weibull right approximation method (TPWRAM) was applied to fit four groups of degradation data from accelerated degradation tests (ADTs) to obtain luminance degradation curves, and the pseudo-failure time of each sample was obtained combined with failure criteria. Then the life distribution under each stress was described by lognormal distribution, the maximum likelihood estimation (MLE) was employed to calculate the distribution parameters, and the accelerated average life was acquired. Finally, the LED light life under conventional stress was predicted by the inverse power law. The proposed life prediction method was also applied to predict the life of vacuum fluorescent display to verify the applicability of the proposed method to other data. The results show that the data obtained via the four groups of ADTs are highly reliable and the life distribution of LED is completely in line with the lognormal distribution. Besides, the determination coefficient <em>R</em><sup>2</sup> of the LED life characteristic curve is 0.9841, which is close to 1, meaning that the conventional life prediction of LED is accurate. Then the result of applying the same method to the life prediction of vacuum fluorescent display (VFD) shows that the relative error between the predicted value and the actual conventional life of VFD is only 1.44 %, which proves that the proposed life prediction method also has good applicability to other photoelectric device. The proposed life prediction method can provide some guidance for the related standards establishment of the LED light life.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121252"},"PeriodicalIF":3.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143837885","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

Bifunctional additive engineering in quasi-2D perovskites for efficient and stable blue light-emitting diodes via phase modulation and defect passivation 准二维钙钛矿双功能增材工程通过相位调制和缺陷钝化实现高效稳定的蓝色发光二极管

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-12 DOI: 10.1016/j.jlumin.2025.121253

Yili Chen , Zhenhui He , Xuehu Luo , Zhanwei Liu , Shuting Cai , Jianfeng Zhang , Jinshan Wang , Xuesong Zhai , Yuan Liu

{"title":"Bifunctional additive engineering in quasi-2D perovskites for efficient and stable blue light-emitting diodes via phase modulation and defect passivation","authors":"Yili Chen , Zhenhui He , Xuehu Luo , Zhanwei Liu , Shuting Cai , Jianfeng Zhang , Jinshan Wang , Xuesong Zhai , Yuan Liu","doi":"10.1016/j.jlumin.2025.121253","DOIUrl":"10.1016/j.jlumin.2025.121253","url":null,"abstract":"<div><div>Blue perovskite light-emitting diodes (PeLEDs) based on mixed halide quasi-two-dimensional (Q-2D) perovskites encounter obstacles including phase instability, defect-induced non-radiative recombination, and ion migration. This work proposes a bifunctional molecular, L-alanine benzyl ester p-toluenesulfonate (LABEP), to synergistically modulate phase distribution and passivate defects in Br/Cl-mixed Q-2D perovskite films. The sulfonic (-SO<sub>3</sub>H) and amino (-NH<sub>2</sub>) groups in LABEP coordinate with undercoordinated Pb<sup>2+</sup>, suppressing the formation of n = 1 phases while promoting higher-n phases (n ≥ 2), thereby enhancing quantum confinement and yielding a hypsochromic emission at 478 nm. LABEP also reduces surface roughness of the perovskite thin film and improves interfacial contact, significantly alleviating shunt current. Furthermore, hydrogen bonding between LABEP and halide ions inhibits ion migration, stabilizing the perovskite structure under operational bias. As a result, the external quantum efficiency (EQE) of the PeLED shows a 2.6-fold enhancement at 478 nm with a narrow FWHM of 20.7 nm. Spectral and operational stability is also markedly enhanced, stemming from suppressed defect-assisted recombination and ion migration. Our findings establish a molecular engineering strategy for achieving efficient and stable blue PeLEDs, offering pivotal perspectives into phase engineering and defect management in perovskite optoelectronics.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121253"},"PeriodicalIF":3.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825912","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

Visible electroluminescence from nanostructured silicon-based Schottky junction LED: role of metal contacts 纳米结构硅基肖特基结LED的可见电致发光：金属触点的作用

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-11 DOI: 10.1016/j.jlumin.2025.121249

Subhajit Roy Chowdhury , Suman Santra , Koushik Ghosh , Sudipta Chakrabarty , Jyoti Mandal , Pravat Kumar Giri , Syed Minhaz Hossain

{"title":"Visible electroluminescence from nanostructured silicon-based Schottky junction LED: role of metal contacts","authors":"Subhajit Roy Chowdhury , Suman Santra , Koushik Ghosh , Sudipta Chakrabarty , Jyoti Mandal , Pravat Kumar Giri , Syed Minhaz Hossain","doi":"10.1016/j.jlumin.2025.121249","DOIUrl":"10.1016/j.jlumin.2025.121249","url":null,"abstract":"<div><div>This work investigates the electroluminescent properties of Schottky junction LEDs based on nanostructured silicon. Despite the challenges with low efficiency, silicon-based light sources are gaining attention due to their compatibility with optoelectronic integrated circuits. This study explores the effect of metal contacts (Silver, Gold, Copper) that play an influencing role in the electroluminescence properties of these devices, by the key parameters such as the optical transparency, work function and solid solubility of the metals in the silicon oxide matrix. These factors affect injection and extraction efficiencies, as well as the emission spectrum, which is characterized by bias-dependent multiple peaks owing to the radiative transitions between the quantum-confined Bloch states and oxide-related interface trap states within the band gap of the nanostructured silicon. Among the metal contacts studied, Silver provides the highest external quantum efficiency integrated over a broad emission spectrum, demonstrating its potential as a source in photonic devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121249"},"PeriodicalIF":3.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823771","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

Effect of the deposition method on the luminescent properties of PMMA films doped with Eu3+ complexes containing amoxicillin drug ligand 沉积方法对掺杂含阿莫西林药物配体Eu3+配合物PMMA薄膜发光性能的影响

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-11 DOI: 10.1016/j.jlumin.2025.121247

Andrei Marcelino Sá Pires Silva , Airton Germano Bispo-Jr , Fernando Aparecido Sigoli , Carolina Ferreira de Matos Jauris , Ernani Lacerda de Oliveira Neto , Breno Pannia Espósito , Lilian Lefol Nani Guariero , Pollyana da Silva Melo , Ricardo Oliveira Freire , Jorge Fernando Silva de Menezes

{"title":"Effect of the deposition method on the luminescent properties of PMMA films doped with Eu3+ complexes containing amoxicillin drug ligand","authors":"Andrei Marcelino Sá Pires Silva , Airton Germano Bispo-Jr , Fernando Aparecido Sigoli , Carolina Ferreira de Matos Jauris , Ernani Lacerda de Oliveira Neto , Breno Pannia Espósito , Lilian Lefol Nani Guariero , Pollyana da Silva Melo , Ricardo Oliveira Freire , Jorge Fernando Silva de Menezes","doi":"10.1016/j.jlumin.2025.121247","DOIUrl":"10.1016/j.jlumin.2025.121247","url":null,"abstract":"<div><div>The research on the development of luminescent polymer films often overlooks the impact of variations in deposition method factors on the properties of the films, particularly their spectral properties. This study aims to investigate the effects of concentration, dopant complex, and deposition methods drop casting and spin coating on the properties of luminescent films in PMMA matrix doped with europium (III) complexes, [Eu(tta)<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>] and [Eu(tta)<sub>3</sub>(amx)], and how these variables affect their spectral properties. Techniques such as infrared spectroscopy, hydrogen nuclear magnetic resonance spectroscopy, thermogravimetry, UV–Vis electronic absorption spectroscopy, excitation and emission spectroscopy, scanning electron microscopy, and atomic force microscopy were used, with a focus on spectral characterization. The results indicate that the produced films have significant potential for applications in photoluminescent labeling, UV radiation monitoring, optoelectronic devices, and other luminescent material systems.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121247"},"PeriodicalIF":3.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823772","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 novel Y3+ modified La3Li5Sb2O12:Mn4+ far-red-emitting garnet phosphor for plant cultivation 用于植物栽培的新型 Y3+ 改性 La3Li5Sb2O12:Mn4+ 远红外石榴石荧光粉

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-04-11 DOI: 10.1016/j.jlumin.2025.121244

Chao Hu , Lan Luo , Rui Guo , Ziying Ma , Ye Liu

{"title":"A novel Y3+ modified La3Li5Sb2O12:Mn4+ far-red-emitting garnet phosphor for plant cultivation","authors":"Chao Hu , Lan Luo , Rui Guo , Ziying Ma , Ye Liu","doi":"10.1016/j.jlumin.2025.121244","DOIUrl":"10.1016/j.jlumin.2025.121244","url":null,"abstract":"<div><div>Mn<sup>4+</sup>-active far-red emitting garnet phosphors are attractive in plant cultivation for chemical/physical stability and emission band well matching with the phytochrome absorption. (La<sub>1-x</sub>Y<sub>x</sub>)<sub>3</sub>Li<sub>5</sub>Sb<sub>2</sub>O<sub>12</sub>: Mn<sup>4+</sup>(x = 0∼0.4) garnet phosphors were fabricated by solid-state reaction in this work. The powder could exhibit far-red emission centered around 717 nm (related to Mn<sup>4+</sup> <sup>2</sup>E<sub>g</sub>→<sup>4</sup>A<sub>2g</sub> transition), with the highest luminescence quantum efficiency (<strong><em>QE</em></strong>) and thermal quenching temperature (<strong><em>T</em><sub><em>0</em></sub><em>.</em><sub><em>5</em></sub></strong>) reaching 38.03 % and 520 K, respectively. Comparing with La<sub>3</sub>Li<sub>5</sub>Sb<sub>2</sub>O<sub>12</sub>:Mn<sup>4+</sup>, the properties have been improved significantly, with double in <strong><em>QE</em></strong> and <em>20 K</em> higher in T<sub>0.5</sub>. Y<sup>3+</sup> cation substitution would lead a stronger crystal field (verified by <strong><em>D</em><sub><em>q</em></sub><em>/B</em></strong> calculation) and a less spin-orbit coupling (verified by EPR spectra), and result in a smaller energy splitting and centroid shifting in <sup><em>2</em></sup><em>E</em><sub><em>g</em></sub> level. Then the luminescent efficiency and thermal stability would be improved a lot. The work not only provides a new far-red-emitting phosphor but also offers a strategy for Mn<sup>4+</sup> -active luminescence material improvement.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"282 ","pages":"Article 121244"},"PeriodicalIF":3.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825910","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