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Robust low threshold full-color upconversion lasing in rare-earth activated nanocrystal-in-glass microcavity

Light(Science & Applications) 2025年第3期14卷 656-664页

作者： Zhigang Gao Lugui Cui Yushi Chu Luyue Niu Lehan Wang Rui Zhao Yulong Yang Xiaofeng Liu Jing Ren Guoping Dong College of Physics and Electronic Engineering Taishan University271021TaianChina Key Laboratory of In-fiber Integrated Optics of Ministry of Education College of Physics and Optoelectronic EngineeringHarbin Engineering University150001 HarbinChina School of Materials Science and Engineering Zhejiang UniversityHangzhouChina State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSchool of Materials Science and EngineeringSouth China University of Technology510640 GuangzhouChina

Visible light microlasers are essential building blocks for integrated ***,achieving low-threshold(μw),continuous-wave(CW)visible light lasing at room temperature(RT)has been a challenge because of the formidable requirement of population inversion at short ***-earth(RE)-activated microcavities,featuring highquality factor(Q)and small mode volume of whispering gallery modes,offer a great opportunity for achieving infrared-to-visible upconversion(UC)***,we report that batch-produced nano-glass composite(GC)microspheres incorporating RE-doped fluoride nanocrystals show efficient UC *** multi-phase composite microspheres exhibit a high Q value(≥10^(5)),comparable to that of conventional multi-component glass *** UC lasing with pure red,green,and blue(RGB)emissions are demonstrated based on a highly efficient tapered fiber-microsphere *** importantly,the GC microspheres manifest reduced(by 45%)lasing threshold and enhanced(more than four times)slope *** characteristics,together with excellent long-term stability,suggest a promising solution to achieving highly robust,stand-alone,low-threshold,and versatile UC microlasers.

关键词： robust lasing integrated photonicshoweverachieving low threshold lasing nanocrystal glass microcavity visible light microlasers upconversion lasing building blocks population inversion

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Bifunctional optical probe based on La_(3)Mg_(2)SbO_(9):Mn^(4+)phosphors for temperature and pressure sensing

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Journal of Materials Science & technology 2024年第27期194卷 98-109页

作者： Zhanglin Chen Songmo Du Fei Li Shijia Zhang Shuo Zhao Zhaobo Tian Jie Zhang Xuanyi Yuan Guanghua Liu Kexin Chen State Key Laboratory of New Ceramics&Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Microelectronics Southern University of Science and TechnologyShenzhen 518055China Advanced Ceramics and Structures Center Yongjiang LaboratoryNingbo 315021China Beijing Key Laboratory of Optoelectronic Functional Materials&Micro-nano Devices Department of PhysicsRenmin University of ChinaBeijing 100872China

Photoluminescent materials,serving as optical probes,constitute a significant medium for reliable re-mote sensing of fundamental state parameters such as temperature and ***,we report a novel Mn^(4+)-activated perovskite-type La_(3) Mg2 SbO9 phosphor(LMS:Mn^(4+))for bifunctional application in both thermometry and *** excitation with 341 nm,LMS:Mn^(4+)(0.7%Mn^(4+))emits a bright narrow-band red light peaking at 705 nm with an FWHM(full width at half maximum)of 32 *** a thermometer,when the temperature surpasses 298 K,non-radiative transitions from the ^(2)Eg excited state lead to a sharp decrease in decay lifetimes with increasing *** allows for lifetime-based luminescence thermometry with a relative sensitivity of 2.52%K^(−1) at 391 ***,LMS:Mn^(4+)was processed into a temperature-sensing coating and its non-contact thermometry functionality was *** manometry applications,the LMS:Mn^(4+)probe experiences substantial pressure-dependent redshift with a sensitivity of 1.20 nm GPa^(−1) in the testing range of 9.48 GPa,which is about 3.3 times that of conventional ruby ***,its FWHM consistently remains below 37 nm,which con-tributes to a high reliability of pressure *** above results indicate that the LMS:Mn^(4+)constitutes a promising bifunctional luminescence probe material in thermometry and manometry.

关键词： Perovskite Phosphors Thermometry Manometry

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Recent material development and applications of conjugated polyelectrolytes by leveraging electronic and ionic transport properties

RSC Applied Polymers

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RSC Applied Polymers 2025年第3期3卷 549-573页

作者： Zhang, Chibin Yao, Liang Pu, Mingrui Zhou, Cheng Institute of Polymer Optoelectronic Materials & Devices Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials State Key Laboratory of Luminescent Materials & Devices South China University of Technology Guangzhou 510640 China Guangzhou China Ray Optoelectronic Materials Co. Ltd Guangzhou 510670 China

Conjugated polyelectrolytes (CPEs) are a distinct class of organic materials featuring a π-conjugated backbone and ionic functional groups, enabling simultaneous electronic and ionic transport. This dual conductivity, governed by molecular design, makes CPEs highly versatile for a wide range of applications. The interplay between backbone conjugation and side-chain polarity allows fine-tuning of charge transport, significantly influencing their performance in electronic and energy storage devices. This review highlights recent advances in CPE material design, focusing on backbone evolution and side-chain engineering. We further explore key applications of CPEs, including organic photovoltaics, organic electrochemical transistors, and lithium-ion batteries, emphasizing the structural requirements for each field. Their current challenges and future opportunities are discussed, underscoring the critical role played by CPEs in next-generation optoelectronic and energy technologies. © 2025 RSC.

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Highly conductive polymer electrodes for polymer light-emitting diodes

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npj Flexible Electronics 2024年第1期8卷 523-531页

作者： Jin Xu Ke Du Feng Peng Zhenzhong Sun Zhiming Zhong Weiji Feng Lei Ying School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology Dongguan University of TechnologyDongguan 523808China Dongguan Volt-Amp Optoelectronics Technology Co.Ltd. Dongguan 523808China

Organic light-emitting diodes(OLEDs)offer the advantage of flexibility;however,the use of traditional transparent anode ITO limits further extension of their flexible *** this study,wepropose employing an polymer polybenzodifuranedione(PBFDO)as a flexible transparent anode instead of the rigid *** address the issue encountered during the PBFDO solution spin-coating process,we introduced n-butanol into the PBFDO conductive solution to reduce its viscosity and freezing point by modulating intermolecular hydrogen bonding ***,high-quality PBFDO films with high conductivity,superior transmittance,and low surface roughness were successfully obtained via ***,due to its proper work function,regular molecular stacking,and low refractive index properties,PBFDO electrode facilitate efficient carrier injection and transport as well as photon *** resulting device utilizing aPBFDOanode combined with Super Yellow as the light-emitting layer exhibited excellent performance characteristics including a normal threshold voltage of 2.6 V and a maximum luminous efficiency of 12.8 cd A^(−1) comparable to that device based on the ITO ***,flexible device also achieved satisfactory performance(7.7 cd A^(−1))when using the PEN substrate.

关键词： diodes conductive polymer

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Stretchable organic electrochemical transistors via threedimensional porous elastic semiconducting films for artificial synaptic applications

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Nano Research 2023年第7期16卷 10206-10214页

作者： Yujie Peng Lin Gao Changjian Liu Jinyi Deng Miao Xie Libing Bai Gang Wang Yuhua Cheng Wei Huang Junsheng Yu State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054China School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringShanghai Key Laboratory of Lightweight Structural CompositesKey Laboratory of High Performance fibers&productsMinistry of EducationDonghua UniversityShanghai 201620China

Neuromorphic computing targets realizing biomimetic or intelligence systems capable of processing abundant tasks in parallel analogously to our brain,and organic electrochemical transistors(OECTs)that rely on the mixed ionic-electronic synergistic couple possess significant similarity to biological systems for implementing synaptic ***,the lack of reliable stretchability for synaptic OECTs,where mechanical deformation occurs,leads to consequent degradation of electrical ***,we demonstrate stretchable synaptic OECTs by adopting a three-dimensional poly(3-hexylthiophene)(P3HT)/styrene-ethylene-butylene-styrene(SEBS)blend porous elastic film for neuromorphic *** architecture shows the full capability to emulate biological synaptic *** the accumulated layer numbers of porous film enables tunable OECT output and hysteresis,resulting in transition in ***,with a trilayer porous film,large-scale conductance and hysteresis are endorsed for efficient mimicking of memory-dependent synapse *** from the interconnected three-dimensional porous structures,corresponding stretchable synaptic OECTs exhibit excellent mechanical robustness when stretched at a 30%strain,and maintain reliable electrical characteristics after 500 stretching ***,near-ideal weight updates with near-zero nonlinearities,symmetricity in long-term potentiation(LTP)and depression,and applications for image simulation are *** work paves a universal design strategy toward highperformance stretchable neuromorphic computing architecture and could be extended to other flexible/stretchable electronics.

关键词： organic electrochemical transistors(OECTs) artificial synapses porous films flexible electronics neuromorphic computing

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Noise Mitigation Based on Geometric Shaping of 32QAM for Discrete Spectrum Nonlinear Frequency Division Multiplexing Systems

Noise Mitigation Based on Geometric Shaping of 32QAM for Dis...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and Optical Communications, IPOC 2024

作者： Tang, Xue Liu, Bo Ren, Jianxin Mao, Yaya Wu, Xiangyu Song, Xiumin Chen, Shuaidong Ullah, Rahat Institute of Optics and Electronics Nanjing University of Information Science & Technology China Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean China Jiangsu International Joint Laboratory on Meteorological Photonics and Optoelectronic Detection Nanjing China Beijing University of Posts and Telecommunications Beijing China School of communication and information engineering Nanjing University of Posts and Telecommunications Nanjing China

A noise mitigation scheme is proposed for nonlinear frequency division multiplexing systems. This scheme utilizes channel characteristics to design an olive shape geometry with greater ASE noise and phase noise tolera... 详细信息

ISBN: (纸本)9798350379266

关键词： Geometry

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Broadband, high-linearity TFLN electro-optic modulator for integrated microwave photonics using reconfigurable dual-parallel modulation

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Optics Express 2025年第6期33卷 13805-13815页

作者： Qin, Yan-Yan Gu, Xiao-Wen Tang, Jie Ye, Hui-Yan Dong, Wen-Hao Song, Yuan-Jun Qian, Guang Zhang, Xiao-Yang Zhang, Tong Southeast University Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and Engineering Jiangsu Nanjing210096 China National Key Laboratory of Solid-state Microwave Devices and Circuits Nanjing210016 China Nanjing Electronic Devices Institute Nanjing210016 China Key Laboratory of Micro-inertial Instrument and Advanced Navigation Technology Ministry of Education School of Instrument Science and Engineering Southeast University Jiangsu Nanjing210096 China Suzhou Key Laboratory of Metal Nano-optoelectronic Technology Southeast University Suzhou Campus Jiangsu Suzhou215123 China

Integrated electro-optic modulators with large bandwidth, high linearity and low driving voltage are key building blocks for integrated microwave photonic (IMWP) links to transmit broadband signals with high fidelity. In this work, thin-film lithium niobate electro-optic modulator consisting of a thermo-optic reconfigurable coupler and dual-parallel Mach-Zehnder modulation scheme is proposed and demonstrated to achieve spurious-free dynamic range of 112.87/107.71 dB·Hz2/3 at 1/10 GHz while keeping large bandwidth (>67 GHz) and low half-wave voltage (2.7 V) simultaneously. The demonstration of this device paves a new route for high-performance electro-optic modulators in future functional IMWP systems. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Fiber optic communications Integrated photonics Lithium niobate Microwave photonics Optical components Silicon modulators

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Direct Photolithography of WO_(x) Nanoparticles for High‑Resolution Non‑Emissive Displays

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Nano-Micro Letters 2025年第3期17卷 297-309页

作者： Chang Gu Guojian Yang Wenxuan Wang Aiyan Shi Wenjuan Fang Lei Qian Xiaofei Hu Ting Zhang Chaoyu Xiang Yu‑Mo Zhang Laboratory of Optoelectronic Information Technology and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Hangzhou Bay Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315336People’s Republic of China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China State Key Lab of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012People’s Republic of China

High-resolution non-emissive displays based on electrochromic tungsten oxides(WOx)are crucial for future near-eye virtual/augmented reality interactions,given their impressive attributes such as high environmental stability,ideal outdoor readability,and low energy ***,the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron ***,we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand *** strategy enabled us to achieve ultra-high resolution efficiently(line width<4μm,the best resolution for reported inorganic electrochromic materials).Additionally,the resulting device exhibited impressive electrochromic performance,such as fast response(<1 s at 0 V),high coloration efficiency(119.5 cm^(2) C^(−1)),good optical modulation(55.9%),and durability(>3600 cycles),as well as promising applications in electronic logos,pixelated displays,flexible electronics,*** success and advancements presented here are expected to inspire and accelerate research and development(R&D)in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays

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Emerging NIR-Ⅱ Luminescent Gold Nanoclusters for In Vivo Bioimaging

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Journal of Analysis and Testing 2023年第3期7卷 260-271页

作者： Siqi Ni Yizhuo Liu Shufen Tong Shihua Li Xiaorong Song MOE Key Laboratory for Analytical Science of Food Safety and Biology Engineering Technology Research Center on Reagent and Instrument for Rapid Detection of Product Quality and Food Safety in Fujian ProvinceCollege of ChemistryFuzhou UniversityFuzhou 350108China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

Gold nanoclusters(AuNCs)with near-infraredⅡ(NIR-Ⅱ)photoluminescence(PL)have emerged as novel bioimaging probes for in vivo disease *** far,it still lacks a systematic review focusing on the synthesis,PL tuning,and in vivo imaging of NIR-Ⅱluminescent *** this review,we briefly introduce the synthesis of NIR-Ⅱluminescent AuNCs using various surface *** discuss the origins and properties of NIR-ⅡPL in AuNCs,and summarize the strategies for improving and/or tuning NIR-ⅡPL *** also provide an overview of the recent progress in the application of AuNCs in tumor-targeted imaging,molecular imaging,and other areas(such as the sensitive imaging of bones,vessels,lymph nodes,etc.).Finally,we present the prospects and challenges in the field of NIR-Ⅱluminescent AuNCs and related imaging applications,expecting to offer comprehensive understanding of this field,and thereby deepening and broadening the biological application of AuNCs.

关键词： Gold nanoclusters NIR-Ⅱ Fluorescent probe In vivo imaging Bioimaging

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Band-like transport in solution-processed perylene diimide dianion films with high Hall mobility

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National Science Review 2024年第5期11卷 264-271页

作者： Yanhua Jia Qinglin Jiang Hanlin Gan Bohan Wang Xiandong He Jiadong Zhou Zetong Ma Jiang Zhang Yuguang Ma Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Department of Physics South China University of Technology

It is crucial to prepare high-mobility organic polycrystalline film through solution ***,the delocalized carrier transport of polycrystalline films in organic semiconductors has rarely been investigated through Hall-effect *** study presents a strategy for building strong intermolecular interactions to fabricate solution-crystallized p-type perylene diimide（PDI） dianion films with a closer intermolecular π-π stacking distance of 3.25 ?.The highly delocalized carriers enable a competitive Hall mobility of 3 cm2V-1s-1,comparable to that of the reported high-mobility organic single *** PDI dianion films exhibit a high electrical conductivity of 17 S cm-1and typical band-like transport,as evidenced by the negative temperature linear coefficient of mobility proportional to T-3/*** work demonstrates that,as the intermolecular π-π interactions become strong enough,they will display high mobility and conductivity,providing a new approach to developing high-mobility organic semiconductor materials.

关键词： band-like transport dianion aggregates Hall mobility solution-processed perylene diimide

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