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International Conference of Electrical, Electronic and Networked Energy Systems, EENES 2024

作者： Qin, Xu Wang, Wei School of Electronic and Information Engineering Tiangong University Tianjin China Tianjin Key Laboratory of Optoelectronic Detection Technology and System Tianjin China Engineering Research Center of Ministry of Education for High Power Semiconductor Lighting Application System Tianjin China

ISBN: (纸本)9789819620456

The vigorous development of new energy vehicles has brought new opportunities and challenges to related industries. In order to gain greater competitive advantages, major automobile manufacturers have begun to focus on using motor current ripple signals directly to achieve various functions in a cheaper and more integrated way. However, the current ripple signal generated when the motor rotates is mixed with a lot of noise. If it is to be put into practical application, it needs to be denoised first, such as the improved wavelet threshold denoising method studied in this paper. First, the denoising principle and the shortcomings of the traditional method are introduced, and the design of the improved method is given on this basis. Subsequently, verification is conducted using simulated signals and actual current ripple signals, with SNR (Signal to Noise Ratio) and RMSE (Root Mean Square Error) used as quantitative evaluation criteria for comparing and analyzing the results. Finally, the experiments have confirmed that the improved threshold method proposed in this paper outperforms traditional methods in noise removal, proving its significance and value for further research. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Noise abatement

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Recent advancements in two-dimensional materials for terahertz photodetectors

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Science China Materials 2025年第4期68卷 933-946页

作者： Qiushi Wei Wenqi Zhu Tao Li Bowen Song Chenxu Shi Yinghao Qu Hui Yang Jingwen Zhang Xijun Liu Hongjun Liu Key Laboratory of Display Materials and Photoelectric Devices(Ministry of Education) Tianjin Key Laboratory for Optoelectronic Materials and DevicesTianjin Key Laboratory of Functional Crystal MaterialsInstitute of Functional CrystalsSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials MOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China

Terahertz(THz)waves have great application potential in the sixth-generation communication technology,biomedicine,spectroscopy,non-destructive testing,security inspection and other fields due to their advantages of good penetration,high safety,good coherence,high bandwidth and many other *** present,the research hotspots of THz photodetectors are developing towards broadband response,miniaturization,high sensitivity,low noise and room temperature *** photodetectors based on two-dimensional(2D)materials such as graphene,black phosphorus,transition metal dichalcogenides,and topological semimetals have attracted amazing attention for the *** paper mainly discusses the recent research progress of these four types of materials in the application of terahertz photodetectors.

关键词： terahertz photodetectors graphene black phosphorus topological semimetals transition metal dichalcogenides

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Phosphorus diffusion and activation in fluorine co-implanted germanium after excimer laser annealing

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Chinese Physics B 2022年第9期31卷 619-623页

作者： Chen Wang Wei-Hang Fan Yi-Hong Xu Yu-Chao Zhang Hui-Chen Fan Cheng Li Song-Yan Cheng Fujian Provincial Key Laboratory of Optoelectronic Technology and Devices School of Opto-electronic and Communiction EngineeringXiamen University of TechnologyXiamen 361024China Department of Physics Semiconductor Photonics Research CenterXiamen UniversityXiamen 361005China

The diffusion and the activation of phosphorus in phosphorus and fluorine co-implanted Ge after being annealed by excimer laser are *** results prove that the fluorine element plays an important role in suppressing phosphorus diffusion and enhancing phosphorus ***,the rapid thermal annealing process is utilized to evaluate and verify the role of fluorine *** the initial annealing of co-implanted Ge,it is easier to form high bonding energy FnVm clusters which can stabilize the excess vacancies,resulting in the reduced vacancy-assisted diffusion of *** maximum activation concentration of about 4.4 ×10^(20) cm^(-3) with a reduced diffusion length and dopant loss is achieved in co-implanted Ge that is annealed at a tailored laser fluence of 175 mJ/cm^(2).The combination of excimer laser annealing and co-implantation technique provides a reference and guideline for high level n-type doping in Ge and is beneficial to its applications in the scaled Ge MOSFET technology and other devices.

关键词： phosphorus diffusion activation concentration co-implanted fluorine germanium excimer laser annealing

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Semitransparent Organic Solar Cells with Superior Thermal/Light Stability and Balanced Efficiency and Transmittance

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Energy & Environmental Materials 2024年第4期7卷 215-222页

作者： Zhipeng Yin Huan Zhao Yang Liu Xunwen Xiao Yong Zhang Huahang Lai Ning Li Hai-Qiao Wang School of Materials Science and Engineering NingboTech UniversityNingbo 315100China State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSchool of Materials Science and EngineeringSouth China University of Technology381 Wushan RoadGuangzhou 510640China E-mail:ningli2022@scut.edu Ningbo University of Technology Ningbo 315211China Ningbo Institute of Technology Beihang UniversityNingbo 315800China Hangna Nanofabrication Equipment Co. Ltd.Hangzhou 311215China

Semitransparent organic solar cells show attractive potential in the application of building-integrated photovoltaics,agrivoltaics,floating photovoltaics,and wearable electronics,as their multiple functionalities of electric power generation,photopermeability,and color *** and exploration of semitransparent organic solar cells with optimal and balanced efficiency and average visible light transmittance and simultaneously high stability are in great *** this work,based on a layer-by-layer-processed active layer and an ultrathin metal electrode,inverted semitransparent organic solar cells(ITO/AZO/PM6/BTP-eC9/MoO_(3)/Au/Ag)were *** and balanced efficiency and average visible light transmittance were demonstrated,and simultaneously promising thermal and light stability were achieved for the obtained *** power conversion efficiency of 13.78-12.29%and corresponding average visible light transmittance of 14.58-25.80%were recorded for the ST-OSC devices with 25-15 nm thick Ag electrodes,*** thermal and light stability with~90%and~85%of initial efficiency retained in 400 h under 85°C thermal stress and AM1.5 solar illumination were demonstrated,respectively.

关键词： organic solar cell semitransparent thermal/light stability

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Enhanced charge collection of AgNWs-based top electrode to realize high-performance,all-solution processed organic solar cells

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Science China Chemistry 2024年第10期67卷 3347-3356页

作者： Juanyong Wan Yang Chen Weijie Chen Jinfeng Xia Guang Zeng Jianlei Cao Chuang Jin Yunxiu Shen Xiaoxiao Wu Haiyang Chen Junyuan Ding Xue-mei Ou Yaowen Li Yongfang Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Jiangsu Sidike New Materials Science and Technology Co. Ltd.Suqian 215400China

All-solution processed organic solar cells are the ultimate aim of printable photovoltaics,but their electrical losses arising from poor contact of top electrodes greatly limit efficiency *** solve the problem,a solution-processed hybrid top electrode was constructed using silver nanowires(AgNWs)as the skeleton and ZnO nanoparticles(ZnO-NPs)as the *** constructing the skeleton,a spin-rinsing treatment was first used to reduce the amount of the residual insulating polyvinylpyrrolidone wrapped around the AgNWs to promote intimate contact among the AgNWs in the ***,the ZnO-NPs matrix was deposited onto the AgNWs skeleton,bridging the AgNWs skeleton with the underlayer ZnO-NPs electron transporting layer(ETL).The underlayer ZnO-NPs ETL can also induce the growth of the ZnO-NPs matrix to minimize lattice mismatch,which creates additional transport channels from the ETL to the AgNWs skeleton for charge *** a result,the obtained electrode significantly enhances the electrical contact in the device,thus delivering record power conversion efficiencies of 16.04%and 14.54%for rigid and flexible all-solution processed OSCs,respectively.

关键词： solution-processed top electrode organic solar cells AgNWs electrical contact

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Pulse Control of Actively Q-switched Random Fiber Laser

Pulse Control of Actively Q-switched Random Fiber Laser

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2023 Photonics Global Conference, PGC 2023

作者： Zhang, Ailing Chen, Haozhe Sun, Ao Pan, Honggang Liu, Fei Chang, Pengxiang Wang, Junfeng Tianjin University of Technology Engineering Research Center of Optoelectronic Devices and Communication Technology Ministry of Education School of Integrated Circuit Science and Engineering Tianjin Key Laboratory of Film Electronic and Communication Devices Tianjin300384 China

ISBN: (纸本)9798350318371

This paper experimentally investigates the influence of pump power, injection power and modulation frequency on the pulse of an actively Q-modulated laser. The number of pulses increases with increasing pump power in both the presence and absence of injection. The pulse amplitude decreases as the injection power increases and pulse disappears when the injection power increases to 14dBm. As the modulation frequency decreases, the number of pulses increases. The number of pulses and the dark pulses can be adjusted by varying the pump power, the injection power and the modulation frequency, which has potential for applications in secure communications and remote sensing and ranging. © 2023 IEEE.

关键词： Fiber lasers

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Recent progress and perspectives on Sb_(2)Se_(3)-based photocathodes for solar hydrogen production via photoelectrochemical water splitting

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Journal of Energy Chemistry 2022年第4期31卷 508-523页

作者： Shuo Chen Tianxiang Liu Zhuanghao Zheng Muhammad Ishaq Guangxing Liang Ping Fan Tao Chen Jiang Tang Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and SystemsCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060GuangdongChina Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026AnhuiChina Wuhan National Laboratory for Optoelectronics(WNLO) School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074HubeiChina

Photoelectrochemical(PEC) cells involved with semiconductor electrodes can simultaneously absorb solar energy and perform chemical reactions, which are considered as an attractive strategy to produce renewable and clean hydrogen energy. Sb_(2)Se_(3) has been widely investigated in constructing PEC photocathodes benefitting of its low toxicity, suitable band gap, superior optoelectronic properties, and outstanding photocorrosion stability. We first present a brief overview of basic concepts and principles of PEC water splitting as well as a comparison between Sb_(2)Se_(3) and other numerous candidates. Then the material characteristics and preparation methods of Sb_(2)Se_(3) are introduced. The development of Sb_(2)Se_(3)-based photocathodes in PEC water splitting with various architectures and engineering efforts(i.e., absorber engineering, interfaces engineering, co-catalyst engineering and tandem engineering) to improve solar-to-hydrogen(STH) efficiency are highlighted. Finally, we debate the possible future directions to further explore the researching fields of Sb_(2)Se_(3)-based photocathodes with a strongly positive outlook in PEC processed solar hydrogen production.

关键词： Sb_(2)Se_(3) Photocathodes Photoelectrochemical Water splitting Solar-to-hydrogen

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Machine learning will revolutionize perovskite solar cells

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The Innovation 2024年第3期5卷 13-14页

作者： Ziming Chen Shuang Pan Jing Wang Yonggang Min Yihuang Chen Qifan Xue State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China

With the emergence of ChatGPT and its rapid iteration speed,artificial intelligence(AI)has undoubtedly become the driving force behind a new wave of technological *** more than half a century of development,AI has become akin to the steam engine of the Industrial Revolution,propelling humanity into the era of *** global industrial chain has also recognized that AI technology will spearhead a new wave of industrial transformation and *** learning(ML),driven by data,abstracts real-life problems into mathematical problems and solves them using *** is currently the mainstream method for addressing many AI *** solar cells(PSCs)are currently the focus of researchers around the world due to their high efficiency,low cost,and simple manufacturing *** are considered the most promising third-generation solar cell for *** 2011,the United States proposed the Materials Genome Initiative(MGI).The main idea is to utilize the“trinity”approach of computing,data,and experiments to transform the conventional“trial and error”model of materials research and development,which relies heavily on experience and experimentation,in order to enhance the quality,speed of discovery,development,production,and application of new *** by the MGI,research on the combination of ML with great application potential and rapidly developing PSC(ML&PSC)emerged(Figure 1).

关键词： utilize Figure doubt

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Spin Hall Effect of Electromagnetic Wave Based on Hyperbolic Metasurface 22

Spin Hall Effect of Electromagnetic Wave Based on Hyperbolic...

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22nd International Conference on Optical Communications and Networks, ICOCN 2024

作者： Li, Weiyan Jiang, Zhaoqi Li, Wenjia Zhu, Zheng Shi, Jinhui College of Physics and Optoelectronic Engineering Harbin Engineering University Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications Ministry of Industry and Information Technology of China Harbin150001 China College of Physics and Optoelectronic Engineering Harbin Engineering University Key Laboratory of In-Fiber Integrated Optics of Ministry of Education Harbin150001 China

In this work, a hyperbolic metasurface is proposed to investigate the spin Hall effect of electromagnetic wave based on the dispersion relation control and the unidirectional propagation phenomenon has been numericall... 详细信息

ISBN: (纸本)9798350367652

关键词： Spin Hall effect

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Realizing high thermoelectric performance via selective resonant doping in oxyselenide BiCuSeO

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Nano Research 2023年第1期16卷 1679-1687页

作者： Yue-Xing Chen Wenning Qin Adil Mansoor Adeel Abbas Fu Li Guang-xing Liang Ping Fan Muhammad Usman Muzaffar Bushra Jabar Zhen-hua Ge Zhuang-hao Zheng F1 Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China International Center for Quantum Design of Functional Materials(ICQD) Hefei National Laboratory for Physical Sciences at Microscale(HFNL)and CAS Center for Excellence in Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

Tuning the charge carrier concentration is imperative to optimize the thermoelectric(TE)performance of a *** BiCuSeO based oxyselenides,doping efforts have been limited to optimizing the carrier *** the present work,dual-doping of In and Pb at Bi site is introduced for p-type BiCuSeO to realize the electric transport channels with intricate band characteristics to improve the power factor(PF).Herein,the impurity resonant state is realized via doping of resonant dopant In over Pb,where Pb comes forward to optimize the Fermi energy in the dual-doped BiCuSeO system to divulge the significance of complex electronic *** manifold roles of dual-doping are used to adjust the elevation of the PF due to the significant enhancement in electrical ***,the combined experimental and theoretical study shows that the In/Pb dual doping at Bi sites gently reduces bandgap,introduces resonant doping states with shifting down the Fermi level into valence band(VB)with a larger density of state,and thus causes to increase the carrier concentration and effective mass(m*),which are favorable to enhance the electronic transport *** a result,both improved ZTmax=0.87(at 873 K)and high ZTave=0.5(at 300–873 K)are realized for InyBi(1−x)−yPbxCuSeO(where x=0.06 and y=0.04)*** obtained results successfully demonstrate the effectiveness of the selective dual doping with resonant dopant inducing band manipulation and carrier engineering that can unlock new prospects to develop high TE materials.

关键词： thermoelectric material BiCuSeO dual-doping power factor figure of merit

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