Journal of Luminescence最新文献

{"title":"Harnessing the inherent photoluminescence of Ba2MgTeO6 double perovskite phosphor for visible to near infrared pc-LED applications","authors":"Nithin Jayan Suraja,&nbsp;Amrithakrishnan Bindhu,&nbsp;Sibi Kaithakkal Solaman,&nbsp;Subodh Ganesanpotti","doi":"10.1016/j.jlumin.2024.120889","DOIUrl":"10.1016/j.jlumin.2024.120889","url":null,"abstract":"<div><p>Phosphor-converted LEDs (pc-LEDs) emitting in the visible region based on undoped tellurate double perovskites have not been explored till now. A cyan-emitting pc-LED is fabricated using the host Ba₂MgTeO₆ double perovskite for the first time. The as-fabricated cyan LED emits light in the visible region with the maximum emission at 484 nm. The obtained CIE coordinates of (0.26, 0.37) ensure a cyan light, and LED exhibits superior color stability even at higher input drive current. An attempt to develop a white emitting phosphor was done by substituting Eu³⁺ ions into the Ba₂MgTeO₆ matrix. Followed by this, a phosphor converted LED emitting in the bluish white region was fabricated by combining near UV chip and BMTO: 0.02 Eu³⁺ phosphor. Further, an inherent near-infrared (NIR) luminescence in Ba₂MgTeO₆ is also discovered and it originates from the ³T_1u, ³A_1u – ¹A_1g electronic transitions within the Te⁴⁺ ions. Upon 367 nm excitation, Ba₂MgTeO₆ exhibits strong broadband NIR emission, which spans from 780 nm to 1150 nm with a maximum emission at 889 nm and full width at half maximum (FWHM) of about 115 nm. Finally, an efficient pc-LED emitting in the NIR region is fabricated using the intrinsic near-infrared luminescence observed in the Ba₂MgTeO₆ phosphor. The pc-LED covering the near infrared region can be potentially used for various applications, including plant cultivation, biosensors, night vision cameras, etc.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120889"},"PeriodicalIF":3.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142228845","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":"Controlling the spontaneous emission of the telecom O-band centers in Silicon-on-Insulator with coherent dipole-quadrupole interactions on a silicon pillar lattice","authors":"Mohammed Ashahar Ahamad ,&nbsp;Stefania Castelletto ,&nbsp;Faraz Ahmed Inam","doi":"10.1016/j.jlumin.2024.120881","DOIUrl":"10.1016/j.jlumin.2024.120881","url":null,"abstract":"<div><p>The G-center in silicon-on-insulator (SOI) has emerged as a relevant single photon source due to the zero-phonon line at 1278 nm, matching the O-band of optical telecommunication wavelengths. Due to the weak emission of the G-center from planar SOI, it is necessary to enhance its emission, in terms of collection efficiency and fluorescence enhancement, to further study its optical properties for application in quantum technologies. Here we design a fabrication-ready SOI Mie-resonator made of a lattice of silicon nanopillars on silica to achieve the spontaneous emission enhancement of single G-centers. Using Si nanopillars lattice on silica with period and dimensions optimized, owing to the coherent superposition of the electric dipolar and magnetic quadrupolar electromagnetic Mie-scattering moments of the individual pillars to the periodic lattice, we show the G-center emission/decay rate enhancement averaged over it's possible dipole orientations is about 13 times compared to bulk. This corresponds to a fluorescence enhancement of about 125 times compared to bulk and about 5-6 times compared to an optimized single pillar with photon collection with a confocal objective. These results provide a fabrication pathway for out-of-plane single photon collection from the SOI G-center or other telecom O-band single-photon sources for their potential deployment in CMOS-compatible quantum optical technologies.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120881"},"PeriodicalIF":3.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022231324004459/pdfft?md5=b4b17d53b07491f6e43a263da7dbdee3&pid=1-s2.0-S0022231324004459-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of inorganic compound size on the relative gain of polymer-based optical waveguide amplifiers","authors":"Yu Yang ,&nbsp;Siliang Tao ,&nbsp;Jun Li ,&nbsp;Zixuan Jiang ,&nbsp;Hao Cui ,&nbsp;Xinying Ren ,&nbsp;Jing Yin ,&nbsp;Fei Wang ,&nbsp;Weiping Qin ,&nbsp;Dan Zhao","doi":"10.1016/j.jlumin.2024.120872","DOIUrl":"10.1016/j.jlumin.2024.120872","url":null,"abstract":"<div><p>Polymer based waveguide amplifiers are the key devices to improve the performance of integrated communication systems. However, due to their comparatively low relative gain, their widespread practical application has been limited. In polymer based optical waveguide amplifiers, the size of inorganic compounds in the composite gain media has a significant impact on the gain performance of the amplifier. Up to now, there has been limited research on the size influence of inorganic compound on the gain variation in organic polymer based optical waveguide amplifiers. In this study, a series of NaLu_0.8-xY_xF₄: Yb, Er-PMMA composite polymer were used as gain media to prepare organic waveguide amplifiers working in the C-band (1530–1565 nm). The size of NaLu_0.8-xY_xF₄: Yb, Er compounds varies between 20 nm and 150 nm. In the polymer based optical waveguide amplifiers, variations in the size of the inorganic NaLu_0.8-xY_xF₄:Yb,Er compound affects not only the C-band emission intensity but also the relative gain. When the size of the inorganic compound is 65 nm, the composite gain media exhibits the maximum emission peak intensity at 1550 nm and the corresponding device achieves a maximum relative gain of 19.3 dB/cm. Our results show that the size of inorganic compounds affects the variation of luminescence intensity and ultimately the gain of waveguide amplifiers. The gain of future polymer optical waveguide amplifiers can be improved by this method.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120872"},"PeriodicalIF":3.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173210","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":"Rare earth Nd3+-doped organic-inorganic hybrid perovskite quantum dots for white LED","authors":"Daqian Wu ,&nbsp;Fengxian Zhou ,&nbsp;Kai Feng ,&nbsp;Jun Wang ,&nbsp;Qixuan Lu ,&nbsp;Xiaowu Wang ,&nbsp;Zijun Zhan ,&nbsp;Weiwei Chen ,&nbsp;Zhengzheng Liu ,&nbsp;Zeyu Zhang ,&nbsp;Zhiping Hu ,&nbsp;Juan Du","doi":"10.1016/j.jlumin.2024.120876","DOIUrl":"10.1016/j.jlumin.2024.120876","url":null,"abstract":"<div><p>Lead halide perovskite quantum dots (QDs) have garnered significant attention due to their tunable band gaps, unique quantum confinement effects, and high photoluminescence quantum yields (PLQYs). Among them, Organic-inorganic QDs make them promising candidates for optoelectronic devices such as quantum dot light-emitting diodes (QLEDs), solar cells, lasers, and photodetectors. However, the toxicity of lead (Pb) has raised environmental and health concerns, hindering their industrial application. To alleviate concerns about heavy metals Pb, extensive research has been conducted on B-site doping and the development of lead-free perovskites. Herein, we firstly developed B-site doping strategy on organic-inorganic hybrid perovskite QDs via rare-earth elements. Neodymium (III) (Nd³⁺) doped FAPbBr₃ QDs were prepared through the ligand-assisted reprecipitation method at room temperature. The B-site doping strategy could alleviate the heavy metal problem of Pb and modulate the band gap of FAPbBr₃ QDs facilely. The results demonstrated that increasing the concentration of Nd³⁺ can change the emission of FAPbBr₃ QDs from pure green to deep blue. Specifically, we achieved highly pure blue emission (∼438 nm) with a full width at half maximum (FWHM) of 13 nm for Nd³⁺-doped FAPbBr₃ QDs. Time-resolved photoluminescence (TRPL) spectroscopy revealed a decrease in the lifetime of FAPbBr₃ QDs from 22.86 to 15.46 ns as the doping concentration increased. Additionally, we fabricated a white LED (WLED) utilizing blue-emitting Nd³⁺-doped FAPbBr₃, green-emitting FAPbBr₃ QDs, and red QDs, achieving a white emission color coordinate of (0.33, 0.36). This study pioneers the application of B-site rare-earth doping in organic-inorganic hybrid perovskite QDs, demonstrating that B-site composition engineering is a reliable strategy to further exploit the perovskite family for wider optoelectronic applications.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120876"},"PeriodicalIF":3.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173211","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":"Enhancing light out-coupling in flexible organic light emitting devices through the localized surface plasmon resonance of urchin-like gold nanoparticles","authors":"Xiaoqing Liao ,&nbsp;Zhigang Huang ,&nbsp;Ying Li ,&nbsp;Jiang Cheng ,&nbsp;Lu Li","doi":"10.1016/j.jlumin.2024.120873","DOIUrl":"10.1016/j.jlumin.2024.120873","url":null,"abstract":"<div><p>The local surface plasmon resonance (LSPR) effect and scattering properties of gold nanoparticles are effective ways to improve the light extraction efficiency of organic light-emitting diodes (OLEDs). Here five different kinds of urchin-like gold nanoparticles (UGNs) were synthesized using the seed-mediated method. The finite-difference time-domain (FDTD) method was used to calculate the near-field local and far-field scattering properties of various sea urchin-like gold nanoparticles. All five types of UGNs demonstrated certain levels of light enhancement within the visible band. The flexible OLED devices were created by doping five different types of nanoparticles into the flexible substrates. The hollow UGNs device exhibited a maximum current efficiency of 124.25 cd/A, a maximum power efficiency of 131.27 lm/W, and a maximum EQE of 45.54 %. When compared to undoped flexible devices, the maximum current efficiency, the maximum power efficiency, and the maximum EQE increase by 132 %, 82 %, and 36 %, respectively. The results indicate that combining the flexible conductive substrate and UGNs is an effective strategy for improving light extraction from flexible OLEDs. This enhancement effect originates from UGNs acting as a scattering layer to reduce total light reflection, and the luminous intensity of the device is improved due to the LSPR of sea urchin-like nanoparticles.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120873"},"PeriodicalIF":3.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S002223132400437X/pdfft?md5=44abeb75438c6dda5c6430a11404b582&pid=1-s2.0-S002223132400437X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of piezoelectric and photoluminescence properties of the multifunctional La2Sn2O7 and Ho2Sn2O7 pyrochlore smart materials doped with Eu3+","authors":"Esra Öztürk ,&nbsp;Volkan Kalem ,&nbsp;Nilgun Ozpozan ,&nbsp;Serkan Dayan","doi":"10.1016/j.jlumin.2024.120880","DOIUrl":"10.1016/j.jlumin.2024.120880","url":null,"abstract":"<div><p>RE_{2−<em>x</em>}Eu_<em>x</em>Sn₂O₇ (RE:La³⁺ and Ho³⁺, <em>x</em>:0.10) materials were synthesized having both pholuminescence and piezoelectric properties using with solid state reaction method at various reaction temperature and heating duration in open atmosphere. The thermal behaviors, crystal system, surface morphology, EDX analysis, Curie tempereture, photoluminescent properties, dielectric and piezoelectric properties of Eu³⁺ ions doped La₂Sn₂O₇ and Ho₂Sn₂O₇ were investigated. Both multi-functional smart materials show dielectric, piezoelectric properties and photoluminescence properties which is responsible transitions of doping Eu³⁺ ions.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120880"},"PeriodicalIF":3.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158168","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":"Bi3+-driven defect formation and related optical multimode in luminescent ferroelectrics Sm3+-doped LiNbO3","authors":"D.J. Lee,&nbsp;Y.S. Lee","doi":"10.1016/j.jlumin.2024.120879","DOIUrl":"10.1016/j.jlumin.2024.120879","url":null,"abstract":"<div><p>We investigated a novel inorganic photochromic material, Sm³⁺ and Bi³⁺-codoped LiNbO₃, which was synthesized using a traditional high-temperature solid-state method. In our samples, Sm³⁺ acted as an orange-red luminescence center, whereas the codopant Bi³⁺ created traps within the host lattice. Doping with Bi³⁺ suppressed the orange-red emission of Sm³⁺ and significantly improved the UV–visible photoswitching photochromic (PC) behavior and the related photoluminescence modulation associated with defect formation by Bi³⁺. Moreover, our samples exhibited good persistent luminescence in close relation to the PC behavior. Furthermore, our samples retained their ferroelectric properties even after doping with Sm³⁺/Bi³⁺. These excellent optical properties suggest that Sm³⁺ and Bi³⁺-codoped LiNbO₃ can be promising inorganic photochromic materials for optical information storage.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"276 ","pages":"Article 120879"},"PeriodicalIF":3.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149448","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":"Interplay of luminescence and magnetic phenomena in Mn-doped ZnS zinc blende nanocrystals: Influence of magnetic doping","authors":"Luis Alberto Hernández-Hernández ,&nbsp;José Alfredo Pescador-Rojas ,&nbsp;Guillermo Santana-Rodríguez ,&nbsp;Francisco Javier Martínez-Farías ,&nbsp;E. Rangel-Cortes ,&nbsp;Miguel Meléndez-Lira ,&nbsp;Arturo Hernández-Hernández ,&nbsp;Alberto Rubio-Ponce","doi":"10.1016/j.jlumin.2024.120870","DOIUrl":"10.1016/j.jlumin.2024.120870","url":null,"abstract":"<div><p>This research comprehensively investigates the interplay between luminescence and magnetic phenomena in the zinc blende phase of manganese-doped and undoped zinc sulfide. The study involves the synthesis of zinc sulfide nanocrystals through a soft chemical method, followed by an in-depth experimental characterization. Theoretical studies were conducted using a 2 × 2 × 2 supercell model with 64 atoms to explore the impact of native defects and manganese doping on zinc sulfide's the electronic, magnetic, and optical properties. The research findings offer a detailed physical description of magnetic and optic phenomena observed, underpinned by a strong correlation between theoretical predictions and experimental results. An essential contribution of this work is developing a depiction that elucidates the relationship between optical transitions and spin-exchange in the context of these phenomena.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120870"},"PeriodicalIF":3.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164949","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":"A novel highly efficient Eu3+-doped germanate red phosphor for accurate latent fingerprint detection and WLED applications","authors":"Qunyang Zhao ,&nbsp;Junyang Chen ,&nbsp;Xiaolong Jing ,&nbsp;Tianchun Lang ,&nbsp;Mingsheng Cai ,&nbsp;Lingling Peng ,&nbsp;Qinping Qiang ,&nbsp;Wenbo Chen ,&nbsp;Elena F. Polisadova ,&nbsp;Bitao Liu","doi":"10.1016/j.jlumin.2024.120878","DOIUrl":"10.1016/j.jlumin.2024.120878","url":null,"abstract":"<div><p>Latent fingerprint detection is one of the promising technique in forensic science. Here, a cation replacement strategy in Eu³⁺-activated K_1-yNa_yGaGeO₄ phosphor under excitation by near ultraviolet (NUV) light was proposed for the first time. The corresponding crystal structure, luminescent property, thermal stability, and color purity were systematically investigated. These results indicate that the high photoluminescence (PL) intensity and prominent ultraviolet absorption of the phosphors can contribute to obvious suppression of background interference of substrate and good visualization for the fluorescent LFP images. The optimized K_0.65Na_0.15GaGeO₄:0.2Eu³⁺ phosphor reveals a great thermal stability and color shift resistance from 300 to 500 K. The Commission International del'Eclairage (CIE) chromaticity coordinates of K_0.65Na_0.15GaGeO₄:0.2Eu³⁺ were measured to be (0.6637,0.3409), and the color purity was calculated as 91.1 %. The obtained results suggest that the K_0.65Na_0.15GaGeO₄:0.2Eu³⁺ phosphor exhibits good potential for high resolution and high sensitivity LFP detection and LED application.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"276 ","pages":"Article 120878"},"PeriodicalIF":3.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142137416","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":"Vacuum-filtration fabrication of copper-based halide scintillation screen for high-resolution X-ray imaging","authors":"Sijun Cao ,&nbsp;Jun'an Lai ,&nbsp;Yijia Wang ,&nbsp;Kang An ,&nbsp;Tingming Jiang ,&nbsp;Mengyue Wu ,&nbsp;Peng He ,&nbsp;Peng Feng ,&nbsp;Xiaosheng Tang","doi":"10.1016/j.jlumin.2024.120877","DOIUrl":"10.1016/j.jlumin.2024.120877","url":null,"abstract":"<div><p>Zero-dimensional (0D) organic-inorganic Cu(I)-based halides have garnered significant attention due to their low toxicity, efficient emission, and moderate fabrication conditions. However, the challenge remains in developing stable and efficient 0D hybrid Cu(I)-based halides for effective X-ray imaging. In this study, a yellow-emitting 0D hybrid copper halide, (ETPP)₂Cu₂I₄ (Ethyl triphenylphosphonium, ETPP), was successfully synthesized via a slow evaporation method. This compound demonstrated an impressive steady-state light yield of 23,200 photons/MeV under X-ray radiation and an ultralow detection limit of 150.9 nGy_air s⁻¹, approximately 35 times lower than the standard medical examination dosage. Utilizing a vacuum-filtration method, we fabricated a flexible film that outperforms traditional methods and achieved an exceptional X-ray imaging resolution of 16.0 lp/mm. This study introduces a novel approach to fabricating high-performance X-ray imaging scintillators based on 0D Cu-based halides, showcasing excellent scintillation performance and stability for non-destructive testing.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120877"},"PeriodicalIF":3.3,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158167","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}