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Suppressing the Undesirable Energy Loss in Solution-Processed Hyperfluorescent OLEDs Employing BODIPY-Based Hybridized Local and Charge-Transfer Emitter

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Energy & Environmental Materials 2024年第2期7卷 372-380页

作者： Xuewei Nie Zafar Mahmood Denghui Liu Mengke Li Dehua Hu Wencheng Chen Longjiang Xing Shijian Su Yanping Huo Shaomin Ji School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and Devices South China University of TechnologyGuangzhou 510640China

Hyperfluorescent organic light-emitting diodes(HF-OLEDs)approach has made it possible to achieve excellent device performance and color purity with low roll-off using noble-metal-free pure organic *** significant progress,the performance of HF-OLEDs is still unsatisfactory due to the existence of a competitive dexter energy transfer(DET)*** this contribution,two boron dipyrromethene(BODIPY)-based donor-acceptor emitters(BDP-C-Cz and BDP-N-Cz)with hybridized local and charge transfer characteristics(HLCT)are introduced in the HF-OLED to suppress the exciton loss by dexter mechanism,and a breakthrough performance with low-efficiency roll-off(0.3%)even at high brightness(1000 cd m^(-2))is *** is demonstrated that the energy loss via the DET channel can be suppressed in HF-OLEDs utilizing the HLCT emitter,as the excitons from the dark triplet state of such emitters are funneled to its emissive singlet state following the hot-exciton *** developed HF-OLED device has realized a good maximum external quantum efficiency(EQE)of 19.25%at brightness of 1000 cd m^(-2)and maximum luminance over 60000 cd m^(-2),with an emission peak at 602 nm and Commission International de L'Eclairage(CIE)coordinates(0.57,0.41),which is among the best-achieved results in solution-processed *** work presents a viable methodology to suppress energy loss and achieve high performance in the HF-OLEDs.

关键词： BODIPY hyperfluorescence organic light-emitting diodes solution-process

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3μm watt level Dy: ZBLAN All-fiber high power lasers

3μm watt level Dy: ZBLAN All-fiber high power lasers

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2024 Advanced Fiber Laser Conference, AFL 2024

作者： Zhang, Chun Li, Dianjia Dong, Fanlong Lue, Qitao Guo, Chunyu Ruan, Shuangchen Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano opt mechatronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China Han’s Laser Technology Industry Group Co. Ltd. Shenzhen518057 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

The mid-infrared band fiber lasers are very important for fundamental research and industrial applications. Mid-infrared fiber lasers in the 2 - 3.5 μm spectral region have been widely used in many fields, including gas remote sensing, molecular detection, material processing, and biomedicine. In this letter, by splicing the fluoride fiber and the quartz fiber, the 976 nm pump light was fused to a 6 m, 7 mol.%, Er3+:ZBLAN fiber system. With the fluoride fiber grating as the resonator, a 11.7 W continuous light output at 2.8 µm was achieved, realizing a high-power, all-fiber 2.8 µm laser. The laser center wavelength was 2826.6 nm, the maximum slope efficiency was 21.7%, and the beam quality M2 3+: ZBLAN fiber. Using the high-power 2.8 µm all-fiber laser as the pump source, it was fused to a 2.7 m, 0.2 mol.%, Dy3+:ZBLAN fiber system through a single-mode ZBLAN fiber. Two self-inscribed fiber Bragg gratings (FBGs) with reflectivities of 99.68% and 30.5% respectively were used to construct an all-fiber Fabry-Perot laser cavity. A 3.8 W continuous light output at 3.2 µm was achieved under a pump power of 7.7 W, realizing a high-power, all-fiber 3.2 µm laser. The laser center wavelength was 3198.97 nm, the measured slope efficiency was 53.0%, the maximum optical-to-optical efficiency was 49.4%, and the beam quality M2 © 2025 SPIE.

关键词： Fiber lasers

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Design of silicon traveling-wave Mach-Zehnder modulators with transparent electrodes

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Optics Express 2025年第1期33卷 1237-1248页

作者： Yu, Zhiguo Tu, Donghe Guan, Huan Tian, Lifei Jiang, Lei Li, Zhiyong Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Key Laboratory of Optoelectronic Materials and Devices Chinese Academy of Sciences Beijing100083 China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing100049 China

High-speed silicon traveling-wave Mach-Zehnder modulators (MZMs) are key components to support optical fiber communication. However, one major challenge with all-silicon MZMs is to achieve efficient high-speed electro-optic (EO) modulation. The reported 3 dB bandwidth of silicon MZMs are generally below 70 GHz, with half-wave voltage (Vπ) around 5 V or larger, which can not support future 200 Gbaud data transmission. Here we break the voltage–bandwidth trade-off limit in silicon MZMs by replacing the doped silicon slab with CMOS compatible transparent electrodes. Benefit from the measured high conductivity, low extinction coefficient, and low refractive index of indium tin oxide (ITO) materials, the microwave dielectric loss of the traveling wave electrode can be greatly reduced. The bandwidth would potentially increase from 40 GHz to 168 GHz, while Vπ and optical insertion loss remains almost unchanged. According to Si/ITO interface contact states, three operating mode were found, corresponding to Si/ITO ohmic contact, schottky contact and hybrid schottky/ohmic contact, respectively. We comprehensively analysis the Si/ITO interface characteristic, establish a complete high frequency equivalent circuit model. Our proposed transparent electrodes will open a new window for the high-speed silicon photonics platform. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Transparent electrodes

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Cyanided Covalent Triazine Frameworks with Enhanced Adsorption Capability Toward Chloranil

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Journal of Wuhan University of technology(Materials Science) 2023年第3期38卷 712-717页

作者：金英伟 XIE Peidong YANG Yuying RONG Gaoqi LI Pingdeng HU Yeli CHENG Bo ZHENG Qi 汪畅 Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances Institute of Environment and HealthJianghan UniversityWuhan 430056China School of Environmental Ecology and Biological Engineering Wuhan Institute of TechnologyWuhan 430025China School of Chemistry and Chemical Engineering Wuhan University of Science and TechnologyWuhan 430081China Key Laboratory of Optoelectronic Chemical Materials and Devices Jianghan UniversityWuhan 430056China

Porous polymer(pyrrolopyrrole)was successfully prepared via domino-ring-formation *** chemical-physical properties of cyanided covalent triazine frameworks(CTF-CN)were characteriazed by fourier transform infrared spectra(FT-IR),scanning electron microscopy(SEM),nuclear magnetic resonance(NMR),specific surface area analyzer(BET)and thermogravimetric analysis(TGA),*** experimental results of adsorption of chloranil(TCBQ)in aqueous solution indicated that CTF-CN exhibited distinctive adsorption capacity toward TCBQ owing to its large specific surface ***,the adsorption equilibrium of as-prepared polymer was executed within 5 h and the calculated adsorption capacity was 499.76 mg/***,the adsorption kinetics could be well defined with the linear pseudo-second-order model,which implies that the chemical interaction are relative important in the course of TCBQ ***,the current studies verify that CTF-CN has unique rigid and nano-porous framework structure,which can be employed for the treatment of a series of harmful aromatic substances.

关键词： disinfection by-products(DBPs) adsorbent haloquinones covalent triazine frameworks

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Hydrophobic long-chain two-dimensional perovskite scintillators for underwater X-ray imaging

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Rare Metals 2024年第1期43卷 175-185页

作者： Jin-Xiao Zheng Zi-An Zhou Tiao Feng Hui Li Cheng-Hua Sun NüWang Yang Tian Yong Zhao Shu-Yun Zhou Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Laboratory of Bioinspired Smart Interfacial Science and Technology of the Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing 100191China Department of Engineering Physics Tsinghua University and Key Laboratory of Particle and Radiation Imaging Ministry of EducationTsinghua UniversityBeijing 100084China e-mail:yangt@***

The underwater X-ray imaging technology development is significant to subaqueous target reconnaissance/detection/identification, subfluvial archaeology,submerged resource exploration, etc. As the core of X-ray imaging detection, the scintillator has been plagued by inherent moisture absorption and decomposition, and strict requirements for seamless packaging and ***, we designed a manganese-doped two-dimensional(2D) perovskite scintillator modified by hydrophobic longchain organic amine through the combination of component and doping engineering. The modified perovskites show high water repellency that can be used as an underwater X-ray scintillator. X-ray images of aquatic organisms or other objects with a high spatial resolution of10 lp·mm^(-1) at a big view field(32 mm × 32 mm) were obtained by scintillation screen. This hydrophobic perovskite scintillator based on molecular design is of great promise in underwater X-ray nondestructive testing technology development.

关键词： Two-dimensional perovskite Hydrophobic Scintillators Underwater X-ray imaging Underwater nondestructive testing technology

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Single-fundamental-mode cryogenic(3.6 K)850-nm oxideconfined VCSEL

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Journal of Semiconductors 2024年第10期45卷 69-73页

作者： Anjin Liu Chenxi Hao Jingyu Huo Hailong Han Minglu Wang Bao Tang Lingyun Li Lixing You Wanhua Zheng Key Laboratory of Optoelectronic Materials and Devices Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Shanghai Key Laboratory of Superconductor Integrated Circuit Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Accelink technologies co. LtdWuhan 430205China Key Laboratory of Solid-State Optoelectronics Information Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Cryogenic oxide-confined vertical-cavity surface-emitting laser(VCSEL)has promising application in cryogenic optical interconnect for cryogenic *** this paper,we demonstrate a cryogenic 850-nm oxide-confined VCSEL at around 4 *** cryogenic VCSEL with an optical oxide aperture of 6.5μm in diameter can operate in single fundamental mode with a side-mode suppression-ratio of 36 dB at 3.6 K,and the fiber-coupled output power reaches 1 mW at 5 *** small signal modulation measurements at 298 and 292 K show the fabricated VCSEL has the potential to achieve a high modulation bandwidth at cryogenic temperature.

关键词： VCSEL cryogenic temperature cryogenic computing optical interconnect

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提高分子结晶度和分子间相互作用以实现有机太阳能电池效率和稳定性的同步提升（英文）

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Science China Materials 2025年第5期68卷 1391-1400页

作者：赵江通杨欣荣邵一鸣孙瑞闵杰 The Institute for Advanced Studies Wuhan University Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life SciencesSuzhou University of Science and Technology

通过分子设计精准控制体异质结(BHJ)形貌是开发高性能有机太阳能电池(OSCs)面临的长期挑战之一.本工作中,我们设计并合成了三种具有不同侧链(分别在苯并三唑单元上引入甲基、2-乙基己基和2-癸基十四烷基)的小分子受体(SMAs),即R-M、R-EH... 详细信息

通过分子设计精准控制体异质结(BHJ)形貌是开发高性能有机太阳能电池(OSCs)面临的长期挑战之一.本工作中,我们设计并合成了三种具有不同侧链(分别在苯并三唑单元上引入甲基、2-乙基己基和2-癸基十四烷基)的小分子受体(SMAs),即R-M、R-EH和R-DTD.这种侧链调控可以有效调节受体/受体(A/A)和给体/受体(D/A)分子之间的相互作用,从而实现BHJ活性层结构的微调.与R-M和R-DTD相比, R-EH与给体PM6表现出更强的A/A和D/A相互作用,形成更紧密的分子排列,改善了BHJ网络结构,增强了电荷传输和提取性能.因此,在三个体系中, PM6:R-EH不仅表现出超过18%的器件效率,还表现出优异的稳定性.本研究深化了A/A和D/A相互作用对BHJ形貌的协同调节作用,为实现高效且稳定的工业化OSCs提供了新的思路.

关键词： organic photovoltaics high performance side chain modification superior photostability intermolecular interaction

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A self-healing aqueous ammonium-ion micro batteries based on PVA-NH_(4)Cl hydrogel electrolyte and MXene-integrated perylene anode

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Nano Research Energy 2024年第4期3卷 57-67页

作者： Ke Niu Junjie Shi Long Zhang Yang Yue Mengjie Wang Qixiang Zhang Yanan Ma Shuyi Mo Shaofei Li Wenbiao Li Li Wen Yixin Hou Fei Long Yihua Gao College of Materials Science and Engineering Guangxi Key Laboratory of Optical and Electronic Materials and DevicesGuilin University of TechnologyGuilin 541004China School of Physics and Center for Nanoscale Characterization&Devices(CNCD) Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and Technology(HUST)Wuhan 430074China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Hubei Key Laboratory of Critical Materials of New Energy Vehicles&School of Mathematics Physics and Optoelectronic Engineering Hubei University of Automotive TechnologyShiyan 442002China

The successful study of self-healing aqueous micro batteries(AMBs)which inherit the advantages of aqueous batteries and have the ability to automatically repair damage is of great significance for the development of smart wearable and portable electronic ***,the rate performance and the related power density of developed self-healing AMBs using metal ions as charge carriers is limited,due to the strong interaction between metal ions and electrode ***,there is great potential for developing self-healing NH^(4+)AMBs,because of the outstanding advantages of NH^(4+)such as extremely abundant reserves,smaller hydrated ion radius and little molar ***,the development of self-healing NH^(4+)AMBs is still an extremely challenge due to the difficulty in developing self-healing hydrogels and instability of anode *** though,the firstly self-healing NH^(4+)AMBs based on tailoring hydrogel electrolyte and MXene-integrated perylene anode were successfully *** expected,self-healing NH^(4+)AMBs exhibit excellent energy density(82.48µWh·cm^(-2))and power density(3.09 mW·cm^(-2)),cycle life(81.67%after 3000 GCD cycles),flexibility(95.68%under 180°)and self-healing ability(94.16%after the 10th self-healing cycles).

关键词： self-healing PVA-NH_(4)Cl hydrogel PTCDI-Ti_(3)C_(2)T_(x)MXene anode self-healing NH_(4)+AMBs high-rate performance flexibility

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Polarization-insensitive silicon intensity modulator with a maximum speed of 224 Gb/s

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Photonics Research 2025年第2期13卷 274-285页

作者： ZANYUN ZHANG BEIJU HUANG QIXIN WANG ZILONG CHEN KE LI KAIXIN ZHANG MEIXIN LI HAO JIANG JIAMING XING TIANJUN LIU XIAOQING LV GRAHAM T.REED Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems School of Electronic and Information EngineeringTiangong UniversityTianjin 300387China Key Laboratory of Optoelectronic Materials and Devices Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Suzhou Institute of Microelectronics and Optoelectronics Integration Suzhou 215213China Key Laboratory for Biomedical Engineering of Ministry of Education Zhejiang UniversityHangzhou 310027China Peng Cheng Laboratory Shenzhen 518000China Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK

Polarization-insensitive optical modulators allow an external laser to be remotely interconnected by single-mode optical fibers while avoiding polarization controllers,which would be convenient and cost-effective for co-packaged optics,5G,and future 6G *** this article,a polarization-insensitive silicon intensity modulator is proposed and experimentally demonstrated based on two-dimensional centrally symmetric gratings,featuring a low polarization-dependent loss of 0.15 dB in minimum and polarization insensitivity of eye *** device exhibits a low fiber-to-fiber insertion loss of 9 dB and an electro-optic(EO)bandwidth of 49.8 GHz.A modulation speed of up to 224 Gb/s is also demonstrated.

关键词： polarization controllerswhich G electro optic bandwidth polarization dependent loss G applications external laser polarization insensitive silicon intensity modulator

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Progress on the antiferromagnetic topological insulator MnBi2Te4

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National Science Review 2024年第2期11卷 33-49页

作者： Shuai Li Tianyu Liu Chang Liu Yayu Wang Hai-Zhou Lu X.C.Xie Department of Physics Harbin Institute of Technology Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology(SUSTech) Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area(Guangdong) Shenzhen Key Laboratory of Quantum Science and Engineering International Quantum Academy Beijing Academy of Quantum Information Sciences Beijing Key Laboratory of Optoelectronic Functional Materials&Micro-Nano Devices Department of Physics Renmin University of China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua University Frontier Science Center for Quantum Information Hefei National Laboratory International Center for Quantum Materials School of Physics Peking University Institute for Nanoelectronic Devices and Quantum Computing Fudan University

Topological materials, which feature robust surface and/or edge states, have now been a research focus in condensed maTher physics. They represent a new class of materials exhibiting nontrivial topological phases,and provide a platform for exploring exotic transport phenomena, such as the quantum anomalous Hall effect and the quantum spin Hall effect. Recently, magnetic topological materials have attracted considerable interests due to the possibility to study the interplay between topological and magnetic *** particular, the quantum anomalous Hall and axion insulator phases can be realized in topological insulators with magnetic order. MnBi2Te4, as the first intrinsic antiferromagnetic topological insulator discovered, allows the examination of existing theoretical predictions; it has been extensively studied, and many new discoveries have been made. Here we review the progress made on MnBi2Te4from both experimental and theoretical aspects. The bulk crystal and magnetic structures are surveyed first, followed by a review of theoretical calculations and experimental probes on the band structure and surface states, and a discussion of various exotic phases that can be realized in MnBi2Te4. The properties of MnBi2Te4thin films and the corresponding transport studies are then reviewed, with an emphasis on the edge state transport. Possible future research directions in this field are also discussed.

关键词： MnBi2Te4 magnetic topological insulator antiferromagnetic quantum anomalous Hall effect axion insulator

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