Journal of Luminescence最新文献_第3页

Te4+-doped Cs3In2Cl9 zero-dimensional perovskite for high-sensitivity optical thermometry 用于高灵敏度光学测温的Te4+掺杂Cs3In2Cl9零维钙钛矿

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-31 DOI: 10.1016/j.jlumin.2025.121330

Xiaoshuang Li , Shurong Chen , Bo Wang , Daxi Pan , Jingrui Zhang , Jiahong Li , Liangyi Gu , Youchao Kong , Wangsheng Liang

{"title":"Te4+-doped Cs3In2Cl9 zero-dimensional perovskite for high-sensitivity optical thermometry","authors":"Xiaoshuang Li , Shurong Chen , Bo Wang , Daxi Pan , Jingrui Zhang , Jiahong Li , Liangyi Gu , Youchao Kong , Wangsheng Liang","doi":"10.1016/j.jlumin.2025.121330","DOIUrl":"10.1016/j.jlumin.2025.121330","url":null,"abstract":"<div><div>Halide perovskite materials have garnered considerable interest due to their distinctive optical properties and their promise in optoelectronic applications. In this study, we reported the synthesis novel zero-dimensional halide perovskite Cs3In2Cl9:Te4+ via an ultrasonic-assisted method. The structural and photoluminescent properties of the resulting polycrystalline sample were meticulously characterized using X-ray powder diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and fluorescence spectroscopy. Experimental findings reveal that upon excitation with near-ultraviolet light at 390 nm, the Cs3In2Cl9:Te4+ sample exhibits a bright orange-yellow emission centered at 585 nm, primarily attributed to self-trapped exciton (STE) luminescence. Temperature-dependent emission spectra and decay curves imply that the material holds great potential for temperature sensing applications, showcasing a maximum relative sensitivity (Sr) of 6.27 % K−1 at 300 K within the range of 300–350 K. Moreover, the Cs3In2Cl9:Te4+ material has been found to possess outstanding thermal and color stability, maintain its integrity through multiple heating and cooling cycles as well as during extended measurement periods. This reliability is crucial for the development of fluorescence-based temperature detection technologies.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"286 ","pages":"Article 121330"},"PeriodicalIF":3.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205514","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 properties, changes in electronic transitions in solvent media and dipole moments of nematic liquid crystals containing cyano group: Absorbance, fluorescence spectroscopy and reactivity parameters 含氰基向列液晶的光学性质、溶剂介质中电子跃迁的变化和偶极矩：吸光度、荧光光谱和反应性参数

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-30 DOI: 10.1016/j.jlumin.2025.121329

Gülşen Altıntaş Pi̇rbudak , Yadigar Gülseven Sıdır

{"title":"Optical properties, changes in electronic transitions in solvent media and dipole moments of nematic liquid crystals containing cyano group: Absorbance, fluorescence spectroscopy and reactivity parameters","authors":"Gülşen Altıntaş Pi̇rbudak , Yadigar Gülseven Sıdır","doi":"10.1016/j.jlumin.2025.121329","DOIUrl":"10.1016/j.jlumin.2025.121329","url":null,"abstract":"<div><div>In this study, electronic structure, solvatochromic properties, optical properties and reactivity parameters of liquid crystal compounds in solvent media with different polarities were investigated. Electronic absorbance and fluorescence spectra of 2-Cyano-4′-bromomethylbiphenyl (BROMO-OTBN) and 4-Cyano-4′-pentyloxybiphenyl (5-OCB) nematic liquid crystals (NLCs) containing cyano group were measured in many different solvent media. The electronic transitions of BROMO-OTBN and 5-OCB LCs were interpreted solvent-dependent wavelength shifts. The effects originating from changes in electronic transitions depending on the solvent media were described using linear solvation energy relationships (LSERs), too. The effect of solvent on electronic structure was investigated using polarizability, polarity and hydrogen bonding capacities. Electric dipole moments in solvent media were calculated using different quasi-quantum mechanical methods. It was found that the solvent acceptance radius of BROMO-OTBN NLC was smaller than that of 5-OCB, while the electric dipole moment of BROMO-OTBN was larger. The charge disorder in the excited state of 5-OCB is significantly larger than that in the ground state. The angle change between the ground and excited dipole moments of 5-OCB is smaller than that of BROMO-OTBN. This is due to the twisted intramolecular charge (TICT) transfer resulting from steric effects during the fluorescence electronic transition. The band gap energy and refractive index of liquid crystals have also been calculated experimentally. The forbidden band gap energy varies from 3 to 3.9 eV and the refractive indices are obtained in the range of 1.3–2.6 depending on the solvent.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"286 ","pages":"Article 121329"},"PeriodicalIF":3.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222344","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

Modulating the embedding position of nitrogen atom in [5]helicene:the design of hot-exciton materials 调节[5]螺旋烯中氮原子的嵌入位置：热激子材料的设计

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-29 DOI: 10.1016/j.jlumin.2025.121328

Qi Gao , Xue Bai , Yu Li , Feng-wei Gao , Zhong-min Su

{"title":"Modulating the embedding position of nitrogen atom in [5]helicene:the design of hot-exciton materials","authors":"Qi Gao , Xue Bai , Yu Li , Feng-wei Gao , Zhong-min Su","doi":"10.1016/j.jlumin.2025.121328","DOIUrl":"10.1016/j.jlumin.2025.121328","url":null,"abstract":"<div><div>The introduction of helical chirality is of great significance for improving the luminescence performance of circularly polarized thermally activated delayed fluorescence (CP-TADF) materials. The current work provides valuable design strategy to develop efficient “hot” exciton TADF molecules with CPL characteristics. A novel class of nitrogen-embedded [5]helicene compounds is designed by adjusting the positions of the nitrogen atom, named [5]H-PTZ, 1-aza[5]H-PTZ, 2-aza[5]H-PTZ, and 3-aza[5]H-PTZ. By employing density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations, we focus on investigating the profound impact of specific nitrogen atom positions within the [5]helicene framework on the electronic properties. Intriguingly, when the nitrogen atom resides near the donor position in 3-aza[5]H-PTZ, the higher-lying singlet-triplet energy gap (ΔEST) approaches almost 0 eV. The small ΔEST values (the ΔES1T2 = 0.07 eV, ΔES1T3 = 0.0003 eV, ΔES1T4 = 0.03 eV, ΔES1T5 = 0.04 eV) facilitate a heightened participation of triplet excited states in the luminescence process. Notably, 3-aza[5]H-PTZ exhibits the radiation rate (kr) value as large as 4.79 × 107 s−1. Particularly, the luminescence asymmetry factor (glum) of the 3-aza[5]H-PTZ reaches 3.90 × 10−3. Therefore, the advantage of [5]helicene as a chiral molecule exhibits CPL characteristic. By precisely controlling nitrogen atom positions, this work highlights design strategies for modulating CPL and “hot” exciton TADF properties.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"285 ","pages":"Article 121328"},"PeriodicalIF":3.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184835","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

Efficient CsPbBr3 sky-blue perovskite light-emitting diodes with enhanced stability via dual passivation using sodium sulfamate 高效的CsPbBr3天蓝钙钛矿发光二极管，通过磺胺酸钠双钝化增强了稳定性

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-27 DOI: 10.1016/j.jlumin.2025.121319

Ganlu Fan, Chang Tan, Zhibo Ge, Li Song

{"title":"Efficient CsPbBr3 sky-blue perovskite light-emitting diodes with enhanced stability via dual passivation using sodium sulfamate","authors":"Ganlu Fan, Chang Tan, Zhibo Ge, Li Song","doi":"10.1016/j.jlumin.2025.121319","DOIUrl":"10.1016/j.jlumin.2025.121319","url":null,"abstract":"<div><div>Perovskite light-emitting diodes (PeLEDs) have demonstrated considerable potential for application in next-generation display technologies, owing to their exceptional light-emitting properties and cost-effectiveness. However, the performance of perovskite-based blue PeLEDs remains inferior to that of green and red light-emitting devices. A primary factor contributing to this disparity is the substantial non-radiative losses, which result in a reduced photoluminescence quantum yield (PLQY) in the films. Here, we employ an additive strategy by incorporating sodium sulfamate (SAS) into the perovskite layer to passivate film defects and enhance the performance of blue PeLEDs. The results reveal that coordination between sulfamate ions and unsaturated Pb2+ ions significantly mitigates non-radiative recombination losses in the bulk-phase perovskites. Moreover, the amino group forms hydrogen bonds with adjacent halogen ions, thereby inhibiting their migration and further improving the passivation effect. Consequently, the SAS-modified blue PeLED devices achieved an external quantum efficiency of 5.47 % and an operational lifetime of 19.8 min, approximately double that of the control. Our findings provide valuable insights and effective strategies for realizing high-performance blue PeLEDs.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"285 ","pages":"Article 121319"},"PeriodicalIF":3.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170639","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

Evaluation of an outer-layer scintillating fiber designed for position-sensitive α-particle detectors 用于位置敏感α-粒子探测器的外层闪烁光纤的评价

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-26 DOI: 10.1016/j.jlumin.2025.121318

Sho Toyama , Misako Miwa , Wataru Kada , Shigeo Matsuyama

引用次数: 0

Effect of CdTe layer thickness on multimode optical thermometry for cryogenic temperatures CdTe层厚度对低温多模光学测温的影响

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-26 DOI: 10.1016/j.jlumin.2025.121317

Evgenii V. Borisov, Alexey A. Kalinichev, Ilya E. Kolesnikov

引用次数: 0

A multifunctional fluorescent probe based on a Tb coordination polymer for the efficient detection of phosphate anions and tetracycline hydrochloride antibiotics in aqueous media 基于Tb配位聚合物的多功能荧光探针用于水介质中磷酸盐阴离子和盐酸四环素抗生素的高效检测

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-26 DOI: 10.1016/j.jlumin.2025.121320

Wenwen Wei , Ai Wang , Yunfang Zhang , Caixia Yuan , Sisi Feng , Ulli Englert

{"title":"A multifunctional fluorescent probe based on a Tb coordination polymer for the efficient detection of phosphate anions and tetracycline hydrochloride antibiotics in aqueous media","authors":"Wenwen Wei , Ai Wang , Yunfang Zhang , Caixia Yuan , Sisi Feng , Ulli Englert","doi":"10.1016/j.jlumin.2025.121320","DOIUrl":"10.1016/j.jlumin.2025.121320","url":null,"abstract":"<div><div>A luminescent terbium coordination polymer (CP) [Tb(H2dccp)(H2O)2·8.5(H2O)]n (1) based on 2,6-di(2,4-dicarboxyphenyl)-4-(3-carboxyphenyl)pyridine (H5dccp) was synthesized in a solvothermal reaction. Single crystal X-ray diffraction revealed that 1 crystallizes in the orthorhombic space group Pbcn and displays a one-dimensional chain structure. 1 shows the characteristic green emission of the Tb(III) ion, and the corresponding fluorescence intensities were very stable in the pH range of 4∼12. The fluorescent of 1 can detect PO43− anions, tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC) and deoxytetracycline (DOX) in water by fluorescence quenching, with detection limits of 20.6 nM, 56.6 nM, 59.6 nM, 105.9 nM and 84.8 nM, respectively. Remarkably, the detection limit of 1 for PO43− anions is the lowest ever reported for a CP-based fluorescence probe. Moreover, the detection phenomenon can be observed by the naked eye through the disappearance of green light under an ultraviolet lamp. The detection mechanism is attributed to the electrostatic interaction between PO43− anion and Tb(III) ion in 1 and to fluorescence resonance energy transfer (FRET) between 1 and tetracycline antibiotics (TCs). Overall, the excellent fluorescence properties of 1 make it a convenient multifunctional fluorescence probe for the detection of TCs and PO43− anions in water.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"285 ","pages":"Article 121320"},"PeriodicalIF":3.3,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170635","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

Modulation of the optical properties of Na2ZnGexSi1-xO4 polycrystals doped with Eu3+ ions 掺杂Eu3+离子对Na2ZnGexSi1-xO4多晶光学性质的调制

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-24 DOI: 10.1016/j.jlumin.2025.121316

K. Lemański, M. Babij

引用次数: 0

Luminescence of CsI:Na crystal scintillator under synchrotron radiation excitation 同步辐射激发下CsI:Na晶体闪烁体的发光特性

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-24 DOI: 10.1016/j.jlumin.2025.121308

K. Shunkeyev , А. Kenzhebayeva , Sh Sagimbayeva , Y. Syrotych , Yu Zorenko

引用次数: 0

Eu2+ doped Ba2Sc2B4O11 phosphor for UV-violet-excited white LEDs Eu2+掺杂Ba2Sc2B4O11荧光粉用于紫外激发白光led

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-05-23 DOI: 10.1016/j.jlumin.2025.121315

Ying Chen , Han Zhang , Yi-Yang Sun

{"title":"Eu2+ doped Ba2Sc2B4O11 phosphor for UV-violet-excited white LEDs","authors":"Ying Chen , Han Zhang , Yi-Yang Sun","doi":"10.1016/j.jlumin.2025.121315","DOIUrl":"10.1016/j.jlumin.2025.121315","url":null,"abstract":"<div><div>To achieve healthy illumination, phosphor-converted white light-emitting diodes (WLEDs) that can be excited by ultraviolet (UV)-violet light are becoming increasingly important. Herein, we report a novel yellow-emitting phosphor, Ba2-xSc2B4O11:xEu2+ (BSBO:Eu2+), which exhibits exceptional optical properties and is suitable for UV-violet-excited WLEDs. BSBO:Eu2+ shows a broad excitation spectrum ranging from 230 to 450 nm, and emits a yellow light with an ultrawide FWHM of about 137 nm centered at 577 nm. The internal and external quantum efficiencies of the phosphor were measured to be 89 % and 41 %, respectively. The fluorescence lifetime of BSBO:0.01Eu2+ was determined to be 2.74 μs. By combining BSBO:0.01Eu2+ with a commercial blue phosphor (BaMgAl10O17:Eu2+) and a 365 nm LED, we achieved a warm WLED with a correlated color temperature (CCT) of 4543 K. By further integrating a green phosphor ((Ba, Sr)2SiO4:Eu2+), the WLED achieved superior color quality, reaching an Ra of 93.0, in comparison with the commercial YAG:Ce3+ with an Ra of 78.4, and a CCT of 7078 K—well-suited for precise color reproduction needs.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"285 ","pages":"Article 121315"},"PeriodicalIF":3.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170282","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