{"title":"Unveiling the Dynamics of Frenkel Defects in Fluoride Materials for X-Ray-Induced Persistent Luminescence and Advanced Imaging Applications","authors":"Mingxing Li, Wenwu You, Shuanglai Liu, Jiacai Li, Huafang Zhang, Gencai Pan, Yanli Mao","doi":"10.1002/lpor.202500092","DOIUrl":"https://doi.org/10.1002/lpor.202500092","url":null,"abstract":"The persistent luminescence (PersL) induced by X-rays in fluoride materials has garnered widespread application within the field of optoelectronics. However, the complexity of the trap systems in multi-component fluoride materials has impeded further exploration into PersL properties. Here, a compound consisting solely of fluoride and lanthanide ions is focused on, which simplifies the revelation of the PersL mechanism under X-ray excitation. Experimental and theoretical results reveal that the PersL phenomenon is primarily attributed to the migration and recovery processes of interstitial fluoride ions within the lattice. Depending on the localization of the interstitial fluoride ions, the corresponding Frenkel defects can be classified into two distinct types: those that are readily self-recoverable near the matrix lanthanide ions and those that are less likely to self-recover near the dopant ions. The anomalous PersL phenomena observed at temperatures that do not correspond to the thermoluminescence spectra further substantiate the existence of these dynamic traps. Furthermore, leveraging the material's superior PersL properties, a scintillator film is prepared and utilized for X-ray PersL imaging in static displays. These findings provide a refined understanding of the PersL mechanism related to Frenkel defects, laying a solid foundation for the continued application and development of PersL technology.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"54 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Yingfeng Qi, Ziyao Wang, Yan Meng, Linyun Yang, Bei Yan, Zhen Gao
{"title":"Realization of a Photonic Higher‐Order Double‐Weyl Semimetal","authors":"Yingfeng Qi, Ziyao Wang, Yan Meng, Linyun Yang, Bei Yan, Zhen Gao","doi":"10.1002/lpor.202401631","DOIUrl":"https://doi.org/10.1002/lpor.202401631","url":null,"abstract":"Higher‐order Weyl semimetal (HOWSM) with coexisting 2D topological surface states and 1D topological hinge states establishes the fundamental connection between the Weyl physics and higher‐order topology. However, existing experimental demonstrations of HOWSM have primarily focused on Weyl nodes with chiral charges of ±1. In this work, based on the space group symmetry, a photonic higher‐order double‐Weyl semimetal (HODWSM) with larger chiral charges is theoretically designed and experimentally realized in a 3D photonic metamaterial. It is demonstrated that this photonic HODWSM exhibits a single pair of quadratic double‐Weyl points with chiral charges of ±2 in the plane, supporting nontrivial higher‐order band topology in the remaining <jats:italic>k<jats:sub>z</jats:sub></jats:italic> planes and achieving unprecedentedly long hinge Fermi arc traversing the entire Brillouin zone. This work extends the research scope of HOWSM and offers an ideal photonic platform for exploring higher‐order Weyl physics.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"73 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143599650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Terabit‐Per‐Second Multidimensional Multiplexing Photonic Integrated Circuit in Lithium Niobate on Insulator","authors":"Yongheng Jiang, Pu Zhang, Mingrui Yuan, Huifu Xiao, Liheng Wang, Binjie Wang, Mei Xian Low, Aditya Dubey, Thach Giang Nguyen, Daqiang Gao, Guanghui Ren, Yong Zhang, Yikai Su, Arnan Mitchell, Yonghui Tian","doi":"10.1002/lpor.202402235","DOIUrl":"https://doi.org/10.1002/lpor.202402235","url":null,"abstract":"The surge in data driven by socio‐economic development has presented enormous challenges to data centers, catalyzing the swift advancement of optical interconnect technology. Advanced optical multiplexers and modulators are increasingly applied to optical interconnects in data centers, offering robust solutions to mitigate the impact of this data deluge. In this paper, a multidimensional multiplexing photonic integrated circuit in lithium niobate on an insulator is proposed and demonstrated involving hybrid multiplexing technology in wavelength, polarization, and mode dimensions. Moreover, the integration of eight racetrack‐resonator modulators with the multidimensional multiplexer is achieved successfully, enabling high‐speed data transmission at a rate of 0.96 Tbps (8 × 120 Gbps). The fabricated photonic integrated circuit is expected to meet the escalating demands of future data‐intensive applications with a scalable and high‐performance solution.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"21 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143599651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Saswata Goswami, Caique Campos de Oliveira, Bruno Ipaves, Preeti Lata Mahapatra, Varinder Pal, Suman Sarkar, Pedro A. S. Autreto, Samit K. Ray, Chandra Sekhar Tiwary
{"title":"Exceptionally High Nonlinear Optical Response in Two-dimensional Type II Dirac Semimetal Nickel Di-Telluride (NiTe2)","authors":"Saswata Goswami, Caique Campos de Oliveira, Bruno Ipaves, Preeti Lata Mahapatra, Varinder Pal, Suman Sarkar, Pedro A. S. Autreto, Samit K. Ray, Chandra Sekhar Tiwary","doi":"10.1002/lpor.202400999","DOIUrl":"https://doi.org/10.1002/lpor.202400999","url":null,"abstract":"Nickel ditelluride (NiTe<sub>2</sub>) is a newly identified Type-II Dirac semimetal, showing novel characteristics in electronic transport and optical experiments. This study explores the nonlinear optical properties of 2D NiTe<sub>2</sub> using experimental and computational techniques (density functional theory-based approach). Few layered 2D-NiTe<sub>2</sub> are synthesized using liquid phase exfoliation (LPE), which is characterized using X-ray diffraction technique, transmission electron, and atomic force microscopy. The nonlinear refractive index (<span data-altimg=\"/cms/asset/c4eed6cb-d24f-44d1-a495-7e6b4d153dec/lpor202400999-math-0001.png\"></span><mjx-container ctxtmenu_counter=\"3\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor202400999-math-0001.png\"><mjx-semantics><mjx-msub data-semantic-children=\"0,1\" data-semantic- data-semantic-role=\"latinletter\" data-semantic-speech=\"n 2\" data-semantic-type=\"subscript\"><mjx-mi data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"italic\" data-semantic- data-semantic-parent=\"2\" data-semantic-role=\"latinletter\" data-semantic-type=\"identifier\"><mjx-c></mjx-c></mjx-mi><mjx-script style=\"vertical-align: -0.15em;\"><mjx-mn data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"normal\" data-semantic- data-semantic-parent=\"2\" data-semantic-role=\"integer\" data-semantic-type=\"number\" size=\"s\"><mjx-c></mjx-c></mjx-mn></mjx-script></mjx-msub></mjx-semantics></mjx-math><mjx-assistive-mml display=\"inline\" unselectable=\"on\"><math altimg=\"urn:x-wiley:18638880:media:lpor202400999:lpor202400999-math-0001\" display=\"inline\" location=\"graphic/lpor202400999-math-0001.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><semantics><msub data-semantic-=\"\" data-semantic-children=\"0,1\" data-semantic-role=\"latinletter\" data-semantic-speech=\"n 2\" data-semantic-type=\"subscript\"><mi data-semantic-=\"\" data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"italic\" data-semantic-parent=\"2\" data-semantic-role=\"latinletter\" data-semantic-type=\"identifier\">n</mi><mn data-semantic-=\"\" data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"normal\" data-semantic-parent=\"2\" data-semantic-role=\"integer\" data-semantic-type=\"number\">2</mn></msub>${n_2}$</annotation></semantics></math></mjx-assistive-mml></mjx-container>) and third-order nonlinear susceptibility (<span data-altimg=\"/cms/asset/5b10bcc4-09d5-4812-bd07-f8a733b0b4e0/lpor202400999-math-0002.png\"></span><mjx-container ctxtmenu_counter=\"4\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor202400999-math-0002.png\"><mjx-semantics><mjx-msubsup data-semantic-children=\"0,10,14\" data-semantic-collapsed=\"(16 (15 0 10) 14)\" data-semantic- data-semantic-role=\"greekletter\" data-semantic-speech=\"chi Su","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"15 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Aleksei Belonovskii, Elizaveta Girshova, Erkki Lähderanta, Mikhail Kaliteevski
{"title":"Predicting VCSEL Emission Properties using Transformer Neural Networks","authors":"Aleksei Belonovskii, Elizaveta Girshova, Erkki Lähderanta, Mikhail Kaliteevski","doi":"10.1002/lpor.202401636","DOIUrl":"https://doi.org/10.1002/lpor.202401636","url":null,"abstract":"This study presents an innovative approach to predicting VCSEL emission characteristics using transformer neural networks. It is demonstrated how to modify the transformer neural network for applications in physics. The model achieved high accuracy in predicting parameters such as VCSEL's eigenenergy, quality factor, and threshold material gain, based on the laser's structure. This model trains faster and predicts more accurately compared to conventional neural networks. The transformer architecture also suitable for applications in other fields is proposed. A demo version is available for testing at https://abelonovskii.github.io/opto-transformer/.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"13 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Full-Stokes Spectro-Polarimetric Camera with Full Spatial Resolution","authors":"Junren Wen, Shuaibo Feng, Yipeng Chen, Weiming Shi, Haiqi Gao, Yu Shao, Yuchuan Shao, Yueguang Zhang, Weidong Shen, Chenying Yang","doi":"10.1002/lpor.202401983","DOIUrl":"https://doi.org/10.1002/lpor.202401983","url":null,"abstract":"In recent years, intelligent optical sensing has seen rapid advancements driven by innovations in optoelectronics and AI-based algorithms. Specifically, spectro-polarimetric imaging (SPI) provides comprehensive insights by capturing both spectral and polarization information. In this paper, a spectro-polarimetric camera is presented that combines full-Stokes polarimetric imaging with multi-spectral imaging, achieving full spatial resolution across the visible wavelength range. Utilizing a CMOS-compatible micro-filter array and a deep unfolding network (GAP-net), the camera achieves a spatial resolution of 2016 × 2016 pixels, and successfully resolves 14.30 lines per millimeter, as verified by the USAF 1951 test chart. The camera achieves video-rate snapshot spectral imaging for polarization-insensitive scenarios and delivers exceptional spectral reconstruction fidelity for both static and dynamic scenes, with a remarkable fidelity of 99.53% for the standard color checker. For polarization-sensitive scenes, the full-Stokes parameters (<i>S</i><sub>0</sub>, <i>S</i><sub>1</sub>, <i>S</i><sub>2</sub>, <i>S</i><sub>3</sub>) are successfully restored, while maintaining the spectral precision. The proposed spectro-polarimetric camera holds significant importance for high-dimensional intelligent optical sensing and demonstrates considerable potential in remote sensing, autonomous driving, and surveillance.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"49 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Tailoring of Blue-Cyan Luminescence in Rb3Y[(P1-xSix)O4]2:Eu2+ Phosphor via Si4+-P5+ Heterovalent Substitution for Full-Spectrum Healthy Lighting","authors":"Yeping Ge, Ming Zhao, Yifei Zhao, Xinping Zhang","doi":"10.1002/lpor.202500026","DOIUrl":"https://doi.org/10.1002/lpor.202500026","url":null,"abstract":"Filling the cyan gap (470–500 nm) in white light-emitting diodes (WLEDs) is crucial for full-spectrum illumination. However, the traditional approach of adding cyan phosphor to red, green, and blue phosphors can lead to reabsorption and color aberrations due to spectral overlap and varying degradation rates among the mixed phosphors. Herein, a blue-cyan-emitting phosphor (λ<sub>em</sub> = 475 nm) is developed through Si<sup>4+</sup>-P<sup>5+</sup> heterovalent substitution in blue-violet-emitting Rb<sub>3</sub>Y(PO<sub>4</sub>)<sub>2</sub>:Eu<sup>2+</sup> phosphor (λ<sub>em</sub> = 425 nm), which can serve as the blue component in WLEDs to fill the cyan gap without adding extra phosphor. Initially, Eu<sup>2+</sup> primarily occupy the Rb2O<sub>12</sub> sites (426 nm) in Rb<sub>3</sub>Y(PO<sub>4</sub>)<sub>2</sub>:Eu<sup>2+</sup>, with minimal occupation in the Rb1O<sub>7</sub> sites (456 nm) and YO<sub>6</sub> sites (522 nm). The Si<sup>4+</sup>-P<sup>5+</sup> substitution results in a red-shift of the Eu<sup>2+</sup>@Rb1 emission peak from 456 to 475 nm and the preferred occupation of the Rb1 sites by Eu<sup>2+</sup>, synergistically achieving the blue-cyan luminescence. Employing the blue-cyan-emitting phosphor instead of the blue-violet-emitting phosphor in WLEDs significantly improves the color rendering index from 90 to 97.2, thus enhancing the overall color reproduction quality. This research demonstrates a facile composition modification method to modulate the properties of inorganic luminescent materials and provides an alternative solution for full-spectrum healthy lighting.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"24 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143575363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Anthony J. El-Helou, Yiting Liu, Chaohao Chen, Fan Wang, Hatice Altug, Peter J. Reece, Ying Zhu
{"title":"Optical Metasurfaces for the Next-Generation Biosensing and Bioimaging","authors":"Anthony J. El-Helou, Yiting Liu, Chaohao Chen, Fan Wang, Hatice Altug, Peter J. Reece, Ying Zhu","doi":"10.1002/lpor.202401715","DOIUrl":"https://doi.org/10.1002/lpor.202401715","url":null,"abstract":"Recent advances in this understanding of light-matter interactions, combined with innovations in the design and fabrication of large-scale nanostructured metasurfaces, have enabled transformative approaches to biosensing and bioimaging. This review delves into the profound impact of optical metasurfaces, highlighting innovations that leverage their tunable properties and adaptability. It begins with an overview of key sensing mechanisms across various metasurface modalities, comparing their effects on metrics such as sensitivity and limits of detection. The discussion then shifts to recent advancements in refractometric biosensing, focusing on novel transduction methods that exploit the intensity, phase, and colorimetric responses of these metasurfaces. The latest developments in surface-enhanced spectroscopic sensing are also examined, exploring how metasurfaces contribute to enhanced molecular fingerprinting capabilities in these applications. Additionally, the role of optical metasurfaces in advancing bioimaging are assessed, emphasizing label-free elastic scattering, spectroscopic/chemical contrast imaging, and metasurface-assisted super-resolution microscopy. Finally, the review addresses current challenges and future directions for optical metasurfaces in biosensing and imaging, including material limitations, difficulties in large-scale fabrication, and the complexity of data analysis and readout methods. It also discusses the integration of novel detector hardware to improve spatiotemporal resolution of sensing and imaging techniques.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"8 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Huijun Zhao, Jiaxing Guo, Fei Fan, Yiming Wang, Jing Liu, Hao Wang, Fan Li, Yunyun Ji, Jierong Cheng, Shengjiang Chang
{"title":"Active Broadband Terahertz OAM-Based Metalens Based on Multi-Channel Multiplexing","authors":"Huijun Zhao, Jiaxing Guo, Fei Fan, Yiming Wang, Jing Liu, Hao Wang, Fan Li, Yunyun Ji, Jierong Cheng, Shengjiang Chang","doi":"10.1002/lpor.202402084","DOIUrl":"https://doi.org/10.1002/lpor.202402084","url":null,"abstract":"Vortex beams with orbital angular momentum (OAM) exhibit immense potential in various fields such as communications, information processing, and optical tweezers. Nevertheless, current terahertz vortex beam generators still face challenges including narrow frequency bands, low efficiency, limited multiplexing capabilities, and difficulties in dynamic tuning. Here, the study introduces a new electrically controlled multi-channel multiplexing strategy that harnesses cascaded helical geometric metasurface, liquid crystal (LC) layer, and OAM-based metalens to achieve comprehensive and independent phase manipulation across all four spin channels. Moreover, by employing spin, spatial, OAM multiplexing, and the LC active control technology, eight distinguishable spin angular momentum (SAM)-OAM coupling states are decoded, enabling dynamic control of vortex beams with 6 different topological charges. Experimental validation reveals remarkable performance: within the broadband range of 0.4–0.6 THz, the vortex beams exhibit a peak excitation efficiency of up to 94%, with each mode purity reaching its highest level of >80%, and the minimum value of inter-mode coupling crosstalk is <–11 dB. This terahertz vortex beam generation and conversion mechanism enhances the operational flexibility in light field manipulation, breaking through the limitations of channel multiplexing and dynamic manipulation in the terahertz band, pioneering a novel avenue for bolstering parallel processing, mitigating inter-channel crosstalk.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"23 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143575309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Pavel V. Alekseevskiy, Xiaolin Yu, Anastasiia S. Efimova, Nikolaj A. Zhestkij, Yuri A. Mezenov, Yuliya A. Kenzhebayeva, Sviatoslav A. Povarov, Anastasia Lubimova, Semyon V. Bachinin, Evgeniia A. Stepanidenko, Vyacheslav Dyachuk, Nan Li, Vladimir P. Fedin, Andrei S. Potapov, Valentin A. Milichko
{"title":"Ultrathin Lanthanide-Based Metal-Organic Nanosheets with Thickness- and Temperature-Driven Light Emission","authors":"Pavel V. Alekseevskiy, Xiaolin Yu, Anastasiia S. Efimova, Nikolaj A. Zhestkij, Yuri A. Mezenov, Yuliya A. Kenzhebayeva, Sviatoslav A. Povarov, Anastasia Lubimova, Semyon V. Bachinin, Evgeniia A. Stepanidenko, Vyacheslav Dyachuk, Nan Li, Vladimir P. Fedin, Andrei S. Potapov, Valentin A. Milichko","doi":"10.1002/lpor.202401912","DOIUrl":"https://doi.org/10.1002/lpor.202401912","url":null,"abstract":"Ultrathin light sources based on 2D materials are of fundamental importance for the design of planar optical and optoelectronic devices. Next to versatility in fabrication and integration of 2D materials with such devices, the efficiency of light emission at the nanometer scale remains a challenge. Here a geometrical approach is reported on to tune the light emission efficiency of 2D materials by mechanical exfoliation of lanthanide-based metal-organic frameworks (Ln-MOFs). For Ln-MOF nanosheets of a variable thickness (13.5–500 nm), it is discovered that a decrease in the thickness yields a 10–50 fold increase of photoluminescence (PL), while changing the temperature (300–7 K) additionally leads to a nonlinear growth of PL by 10–20 times. The reported temperature- and thickness-driven light emission by 2D Ln-MOFs opens prospects to design efficient, robust, and scalable ultrathin MOF-based light sources and optical sensors.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"67 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}