Journal of Luminescence最新文献

{"title":"Temperature-dependent photoluminescence of ZnSe nanocrystals ball-milled for 0–60 minutes","authors":"Nguyen Thu Loan ,&nbsp;Bui Thi Thu Hien ,&nbsp;Dariusz Hreniak ,&nbsp;Nguyen Quang Liem","doi":"10.1016/j.jlumin.2025.121481","DOIUrl":"10.1016/j.jlumin.2025.121481","url":null,"abstract":"<div><div>ZnSe nanocrystals (NCs) with sizes of several tens of nanometers have attracted renewed attention as true blue emitters in light-emitting diodes. The hydrothermal method is a preferable and cost-effective approach for producing high-quality ZnSe NCs with sizes around a hundred nanometers; therefore, subsequent size-reduction treatment becomes essential to obtain ZnSe NCs within the desirable size range of several tens of nanometers. Ball milling is a simple and effective method for reducing the size of ZnSe NCs, although it may introduce structural defects. This paper presents the temperature-dependent photoluminescence (PL) characteristics of various ZnSe NCs hydrothermally synthesized and subsequently ball-milled to assess their corresponding optical properties. The as-synthesized ZnSe NCs and those milled for 10 and 20 min show a narrow excitonic emission at 2.79 eV (∼444 nm) and broad bands at ∼2.72 eV (453 nm) and 2.46 eV (500 nm) at 20 K. Above 150 K, only the excitonic emission remains at 2.68 eV (∼463 nm), as the latter two are thermally quenched. For the 40- and 60-min milled samples, the excitonic emission is significantly weakened. Analyzing the temperature-dependent PL spectra over the 20–300 K range enables us to determine the activation energies of 70 meV, 7 meV, and 10 meV for the excitonic emission and the PL bands peaking around 2.72 eV and 2.46 eV, respectively. The possible origins of the observed PL bands are discussed.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121481"},"PeriodicalIF":3.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890653","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":"Thermoluminescence properties of Cr, Si, and Mg co-doped Al2O3 ceramics plates under proton beam irradiation","authors":"Ayano Okubo ,&nbsp;Yutaro Mori ,&nbsp;Tomonori Isobe ,&nbsp;Takeji Sakae ,&nbsp;Yusuke Koba ,&nbsp;Weishan Chang ,&nbsp;Kiyomitsu Shinsho","doi":"10.1016/j.jlumin.2025.121477","DOIUrl":"10.1016/j.jlumin.2025.121477","url":null,"abstract":"<div><div>This study evaluates the thermoluminescence (TL) properties of Cr, Si, and Mg co-doped Al₂O₃ (Al₂O₃:Cr,Si,Mg) ceramic plates under 200 MeV proton beam irradiation, aiming to assess their potential for high-resolution two-dimensional dosimetry in proton therapy. Spectral measurements revealed a dominant TL emission peak at 693 nm, corresponding to the ²E → ⁴A₂ transition of Cr³⁺ ions. The glow curves exhibited consistent peak temperature and shape regardless of dose and linear energy transfer (LET), indicating the stability of the trap and recombination centers. The TL response showed excellent linearity with absorbed dose, agreeing within ±1.5 % with ionization chamber measurements, and demonstrated minimal dependence on LET. Furthermore, large-area (200 mm × 200 mm) TL ceramic plates were used to obtain two-dimensional dose distribution maps. The off-axis ratio and percent depth dose distributions measured using TL imaging were in good agreement (within ±1–6 %) with those obtained from standard dosimeters, and the spatial resolution reached 156 μm. These results suggest that Al₂O₃:Cr,Si,Mg ceramics are suitable for accurate, reusable, and high-resolution proton dosimetry, offering a promising alternative to conventional film- or ionization-based detectors for quality assurance in particle therapy.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121477"},"PeriodicalIF":3.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895431","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":"Compromising stereoscopic color gamut and non-visual biological effects for four-primary LED displays","authors":"Siyang He ,&nbsp;Sijia Wu ,&nbsp;Dong Wang,&nbsp;Ziquan Guo","doi":"10.1016/j.jlumin.2025.121480","DOIUrl":"10.1016/j.jlumin.2025.121480","url":null,"abstract":"<div><div>As a new type of semiconductor, GaN-based Light-Emitting Diodes (LEDs) are widely used in our daily life due to their energy-saving and environmental-friendly advantages. However, the high proportion of blue light in LEDs affects their photobiological safety. In this study, spectral data of far-red LEDs with wavelengths of 663.1 nm, 681.4 nm, 700.0 nm, and 732.7 nm, respectively, were first obtained through spectral experiments. Using a self-designed three-dimensional (3D) stereoscopic color gamut calculation software for four-primary-color display system, spectral optimization based on multi-objective genetic algorithm was performed under different weighting conditions of Stereoscopic Color Gamut Coverage (<span><math><mrow><msub><mrow><mi>C</mi><mi>G</mi></mrow><mi>c</mi></msub></mrow></math></span>) and Blue Light Hazard Efficiency (<span><math><mrow><msub><mi>K</mi><mrow><mi>b</mi><mo>,</mo><mi>v</mi></mrow></msub></mrow></math></span>) to obtain the optimal relative intensity ratios in two different application scenarios, followed by data analysis. According to experimental results, the antagonistic relationship between improving display performance and reducing blue light hazards was verified. Meanwhile, the optimal relative intensity ratio of four primary colors in the display system and suitable far-red wavelengths for applications in different scenarios could be determined.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121480"},"PeriodicalIF":3.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886863","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":"MnO2 nanosheet decorated gold nano cluster-antibody conjugates as a FRET-based immunosensor for the selective visual detection of Caspase-3: A biomarker for traumatic brain injury","authors":"Greeshma Rajeevan ,&nbsp;Merin K. Abraham ,&nbsp;Geneva Indongo ,&nbsp;B.K. Arathy ,&nbsp;Dheyaa Mohammed Dhahir ,&nbsp;Sony George","doi":"10.1016/j.jlumin.2025.121478","DOIUrl":"10.1016/j.jlumin.2025.121478","url":null,"abstract":"<div><div>Traumatic brain injury (TBI) remains a pervasive and catastrophic condition, ranking as a leading cause of global mortality, morbidity and disability. Assessing TBI poses a significant challenge due to the lack of sensitive diagnostic tools. Clinicians currently resort to CT scans and MRI scans, which are not only expensive and insensitive but also inaccessible to rural areas, delaying timely diagnosis and treatment. To overcome this limitation, we have developed a novel biomarker-based detection method for assessing brain injuries, employing caspase-3 as the biomarker. For this a a fluorescence resonance energy transfer (FRET) based biosensor was developed using gold nano cluster-antibody conjugates decorated with MnO₂ nanosheets. Upon addition of caspase-3 antigen (ACa3), the sensor exhibited a significant fluorescent enhancement, achieving a limit of detection as low as 23 pg/mL. The study was further extended to detect ACa3 in human serum samples yielding a recovery percentage ranging from 93 to 98 %. To assess the clinical feasibility of the sensor and to enable visual detection, a paper-based test strip was also developed, which specifically detects ACa3 amidst other competing biomolecules and ions present in the body.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121478"},"PeriodicalIF":3.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878819","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":"Impact of dysprosium doping concentration on the thermoluminescence properties of tricalcium phosphate","authors":"Mohamed El-Kinawy ,&nbsp;Mohammad M. Farag ,&nbsp;Nabil El-Faramawy ,&nbsp;N.Y. Abdou","doi":"10.1016/j.jlumin.2025.121475","DOIUrl":"10.1016/j.jlumin.2025.121475","url":null,"abstract":"<div><div>Tricalcium phosphate (TCP) was effectively synthesized from snail shells by a sustainable and eco-friendly green synthesis method. The impact of dysprosium (Dy) doping on TCP's thermoluminescence (TL) characteristics was carefully examined. X-ray diffraction (XRD) validated the crystalline structure, whilst Fourier-transform infrared spectroscopy (FTIR) substantiated the existence of the typical functional groups of TCP. The thermoluminescent properties were examined, like dose response linearity, reusability, and minimal detectable dosage. Among the different Dy concentrations, 1 % Dy-doped TCP displayed the highest TL response. The deconvolution of the TCP glow curves was analyzed to have 10 superimposed trapping peaks. These traps were located between 1.05 and 1.84 eV and exhibited a linear dose-response between 0.11 and 275 Gy. The minimum detectable dose of the prepared samples was 350 mGy. The fading results showed no change in the intensity of the glow curve in the temperature range of 450–620 K after 336 h. The results underscore Dy-doped TCP as a viable material for radiation dosimetry applications, especially in medical domains, where precise and dependable dosage evaluation is crucial.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121475"},"PeriodicalIF":3.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864439","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":"Composition-dependent scintillation properties of Ce3+-Doped KGd(PO3)4 glasses","authors":"Daiki Shiratori ,&nbsp;Hiromi Kimura ,&nbsp;Yutaka Fujimoto ,&nbsp;Hiroki Kawamoto ,&nbsp;Yutaka Fukuchi ,&nbsp;Keisuke Asai","doi":"10.1016/j.jlumin.2025.121471","DOIUrl":"10.1016/j.jlumin.2025.121471","url":null,"abstract":"<div><div>KGd(PO₃)₄ (KGP) glasses doped with 3.0 mol% Ce³⁺ and systematically varied K₂O:Gd₂O₃ ratios were prepared by the melt-quenching method and exhibit pronounced composition-dependent optical and scintillation properties. FTIR analysis revealed progressive network depolymerization with increasing K₂O content, as evidenced by an increase in the average number of non-bridging oxides from 1.41 to 1.64. In the transmission spectra, the Ce³⁺ 4<em>f</em>–5<em>d</em> absorption band was observed in all samples, and the band exhibited a pronounced wavelength shift depending on the compositional ratio. When the composition deviated from the stoichiometric KGP (becoming either Gd-rich or K-rich), the absorption and photoluminescence (PL) band red-shifted in both cases: in the Gd-rich samples due to crystal-field strengthening associated with reinforcement of the phosphate network, and in the K-rich samples due to the nephelauxetic effect arising from increased optical basicity, both of which induce a low-energy shift of the Ce³⁺ 5<em>d</em> level. The absolute PL quantum yield (<em>QY</em>) peaks at 81.1 % for stoichiometric KGP and decreases sharply with off-stoichiometric deviation; at the same time, the PL decay time constant shortens, indicating increased nonradiative loss and a reduced radiative fraction in the off-stoichiometric glasses. The integrated photoacoustic (PA) intensity is minimal at the stoichiometric KGP sample and increases toward both extremes; the scintillation light yield (<em>LY</em>) is anti-correlated with PA intensity and positively correlated with PL <em>QY</em>. Under γ-ray excitation, the stoichiometric KGP sample exhibits the maximum <em>LY</em> (∼2860 photons/MeV) and a low afterglow (∼2.08 × 10¹ ppm), lower than Tl:CsI (1.09 × 10² ppm). These results indicate that changes in glass structure due to adjustments in K₂O:Gd₂O₃ significantly affect scintillation performance.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121471"},"PeriodicalIF":3.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878561","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":"Thermoluminescence characteristics, and potential feasibility of a homemade CaSO4: Er phosphor","authors":"Sayed Mamdouh ,&nbsp;Huda A. Alazab ,&nbsp;H.M. El-Sayed ,&nbsp;S.A. El-fiki ,&nbsp;E. Salama","doi":"10.1016/j.jlumin.2025.121476","DOIUrl":"10.1016/j.jlumin.2025.121476","url":null,"abstract":"<div><div>This research introduces a custom-prepared calcium sulfate (CaSO₄):Er thermoluminescent phosphor synthesized using the coprecipitation method. It focuses on its development, analysis, and potential uses. Structural identification was carried out through X-ray diffraction (XRD) and scanning electron microscopy (SEM), while thermoluminescence (TL) analysis investigated the dosimetric characterization such as gamma dose-response, thermal fading, reusability, and minimum detectable dose. This custom phosphor exhibited reasonable sensitivity to ionizing radiation, with a relative sensitivity of 19.4 ± 0.47 % compared to TLD-100. It is capable of detecting very low doses, down to 19.7 mGy. Based on the linearity index, the prepared phosphor exhibits linear-sublinear behavior between 0.5 and 200 Gy and linear-supralinear behavior up to 2 kGy and notable reusability (accuracy within 4 %). Thermal fading of 42 % after 24 h from irradiation followed by 15 % after 3 d with no significant fading during the remaining investigation time of 27 days was observed implying more future investigation and analysis of the recorded glow curve and the effect of thermal treatment of the prepared phosphor. In parallel, Diffuse Reflectance Spectroscopy (DRS) was used to examine pure and erbium-doped calcium sulfate samples. Optical transitions at 5.24 eV and 3.92 eV were observed in the pure samples while doping with Er³⁺ ions introduced additional transitions at 1.88 eV, 2.38 eV, 2.54 eV, and 3.24 eV. Photoluminescence measurements confirmed the successful incorporation of erbium ions, further illustrating the impact of doping on the material's electronic structure and optical properties. The findings enhance the development of radiation dosimeters for dosimetry applications and provide valuable insights into the viability of homemade CaSO₄: Er.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121476"},"PeriodicalIF":3.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878763","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":"High-efficiency deep-blue electroluminescence based on a fluorene derivative of AIEEgen containing triphenylethene","authors":"Zhiting Chang ,&nbsp;Yangyang Zhu ,&nbsp;Shuwen Zheng ,&nbsp;Yutong Lu ,&nbsp;Chaoxian Liu ,&nbsp;Wenbo Xing ,&nbsp;Yumiao Huang ,&nbsp;Jiangtao Li ,&nbsp;Bin Zhai ,&nbsp;Bin Wei ,&nbsp;Fuli Zhang","doi":"10.1016/j.jlumin.2025.121472","DOIUrl":"10.1016/j.jlumin.2025.121472","url":null,"abstract":"<div><div>This study details the synthesis and application of a novel blue hybridized local and charge-transfer (HLCT) emitter, 2TriPEF2CN, which integrates aggregation-induced enhanced emission (AIEE) characteristics with the “hot exciton” mechanism for high-efficiency deep-blue electroluminescence. The compound 2TriPEF2CN was designed with a fluorene core, electron-withdrawing <em>p</em>-cyanophenyl groups, and aggregation-induced emission (AIE)-active triphenylethene (TriPE) units. Theoretical calculations revealed that the twisted molecular configuration and the presence of the electron-withdrawing group effectively suppressed intermolecular aggregation and facilitated high-energy triplet utilization through the hRISC process. This unique molecular design endows the compound with AIEE and desirable photophysical properties, including a high photoluminescence quantum yield (Φ) of 40 % in the solid state and a short fluorescence lifetime of 0.9 ns. Based on 2TriPEF2CN, non-doped and doped organic light-emitting diodes (OLEDs) were fabricated. The non-doped OLED exhibited a modest external quantum efficiency (<em>EQE</em>) of 1.22 %, a maximum luminance (<em>L</em>_max) of 3730 cd m⁻², a maximum current efficiency (<em>η</em>_c,max) of 1.68 cd A⁻¹, and a maximum power efficiency (<em>η</em>_p,max) of 0.79 lm W⁻¹, which are acknowledged to be insufficient for practical display applications. In contrast, the doped OLEDs demonstrated distinct blue-shifted emission spectra with the Commission Internationale de l'Éclairage (<em>CIE</em>_x,y) coordinate of (0.15, 0.09) and higher efficiencies, with the 20 % doped device achieving an <em>EQE</em>_max of 3.08 %, a <em>η</em>_c,max of 2.51 cd A⁻¹, a <em>η</em>_p,max of 1.07 lm W⁻¹, and a <em>L</em>_max of 5839 cd m⁻². All doped devices showed minimal efficiency roll-offs even at a luminance of 1000 cd m⁻². This work offers a viable approach to constructing efficient deep-blue HLCT emitters by modifying fluorene derivative with AIE group triphenylethene.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121472"},"PeriodicalIF":3.6,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864440","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":"Anthraquinonyl-pyridinium-based iridium(III) complexes with reversible piezochromic phosphorescence behaviors","authors":"Jiangyu Zhu,&nbsp;Lixiang Li,&nbsp;Shuanglong Yin,&nbsp;Jie Tang,&nbsp;Song Guo","doi":"10.1016/j.jlumin.2025.121469","DOIUrl":"10.1016/j.jlumin.2025.121469","url":null,"abstract":"<div><div>The synthesis and characterization of two novel orange emissive cationic iridium(III) complexes (<strong>Ir1</strong> and <strong>Ir2</strong>) are reported, where an anthraquinone group was introduced into the pyridine moiety to construct the cyclometalating ligands, and the photophysical properties and piezochromic behavior were systematically investigated. The prepared ionic phosphorescent iridium(III) complexes exhibited orange-red emissions at 577 nm and 580 nm, respectively. Upon grinding, the phosphorescence intensity of <strong>Ir1</strong> decreased, accompanied by a red-shift of 14 nm, and its lifetime extended to 5.83 μs. Meanwhile, the emission peak of <strong>Ir2</strong> showed a blue shift of 20 nm. Powder X-ray diffraction (P-XRD) analysis confirmed that a phase transition from crystalline to amorphous states occurred after applying external pressure, which can be attributed to the distorted molecular conformation leading to looser molecular packing. Through the design and regulation of molecular structures, novel phosphorescent materials with efficient, stable, and reversible piezochromic properties were developed, thereby advancing the research and application of piezochromic materials.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121469"},"PeriodicalIF":3.6,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864382","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":"Hybrid plasmonic coupling through multilayer optimum microcavity based quantum dots random laser","authors":"Muhammad Ali Khan ,&nbsp;Naeem Iqbal ,&nbsp;Siqi Chang ,&nbsp;Gohar Aziz ,&nbsp;Junhua Tong ,&nbsp;Xiaoyu Shi ,&nbsp;Zhiyang Xu ,&nbsp;Xiaomei Gao ,&nbsp;Anwer Hayat ,&nbsp;Tianrui Zhai","doi":"10.1016/j.jlumin.2025.121455","DOIUrl":"10.1016/j.jlumin.2025.121455","url":null,"abstract":"<div><div>The development of random laser-based devices remains a key challenge due to their low efficiency. This study investigates the performance of multilayered random laser cavities encompassing silver nanoparticles and quantum dots as scatters and gain mediums respectively on silver film coated glass substrate. Polyvinyl alcohol as a spacer layer between gain and scatters enables the engineering of plasmon–exciton couplings; its thickness variation significantly influences the lasing threshold and slope efficiency under protective coating of Polydimethylsiloxane (PDMS). RL wavelength is red shifted from <span><math><mrow><mo>∼</mo></mrow></math></span> 636.5 nm to <span><math><mrow><mo>∼</mo></mrow></math></span> 645.4 nm under variation of spacer thickness from 0 nm to 137 nm attributed to variation in effective refractive index under the influence of plasmon–exciton interaction which enhanced radiative recombination as well. An optimal spacer thickness of 105 nm assisted in lowering the threshold value to 20 μJ/cm², underscoring improved energy confinement and lasing efficiency under hybrid plasmonic coupling. The power Fourier transform analysis of the random lasing spectra assisted the presented approach. These findings provide a compact strategy for developing wavelength-selective plasmon–exciton hybrid lasing systems in advanced photonic applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121455"},"PeriodicalIF":3.6,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864438","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}