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Regulating crystallization and retarding oxidation in Sn-Pb perovskite via 1D cation engineering for high performance all-perovskite tandem solar cells

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Journal of Energy Chemistry 2025年第1期100卷 646-652页

作者： Ranran Liu xin zheng Zaiwei Wang Miaomiao Zeng Chunxiang Lan Shaomin Yang Shangzhi Li Awen Wang Min Li Jing Guo Xuefei Weng Yaoguang Rong Xiong Li Michael Gr?tzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences School of Physics and Optoelectronic Engineering Hainan University Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) Chinese Academy of Sciences School of Chemistry Chemical Engineering and Life Sciences State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

All-perovskite tandem solar cells have the potential to surpass the theoretical efficiency limit of single junction solar cells by reducing thermalization ***,the challenges encompass the oxidation of Sn2+to Sn4+and uncontrolled crystallization kinetics in Sn-Pb perovskites,leading to nonradiative recombination and compositional heterogeneity to decrease photovoltaic efficiency and operational ***,we introduced an ionic liquid additive,1-ethyl-3-methylimidazolium iodide （EMIMI） into Sn-Pb perovskite precursor to form low-dimensional Sn-rich/pure-Sn perovskites at grain boundaries,which mitigates oxidation of Sn2+to Sn4+and regulates the film-forming dynamics of Sn/Pb-based perovskite *** optimized single-junction Sn-Pb perovskite devices incorporating EMIMI achieved a high efficiency of 22.87%.Furthermore,combined with wide-bandgap perovskite sub-cells in tandem device,we demonstrate 2-terminal all-perovskite tandem solar cells with a power conversion efficiency of 28.34%,achieving improved operational stability.

关键词： All-perovskite tandem solar cells Sn-Pb perovskite 1D Regulated crystallization Antioxidation

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Study of thermal decoherence of harmonic oscillators

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原子与分子物理学报 2025年第5期42卷 108-114页

作者： LI Jian ZHOU Gao-Liang YAN zheng-xin LIU Wei WANG Zhao-Qi College of Science Xi’an University of Science and TechnologyXi’an 710054China

The thermal decoherence of harmonic oscillators is investigated *** quantum system presented here is a one-dimensional oscillator with angular frequency,which is surrounded by a thermal bath of environmental *** are various environmental oscillators with different angular frequency(below an ultraviolet cutoff).At the beginning,the quantum system is a pure state and the environmental oscillators are in thermodynamic equilibrium with *** a period,the system-environment interactions inspire significant decoherence of the quantum *** decoherence is displayed by explicit calculations of the purity and von Neumann entropy of the quantum *** is worth noting that the decoherence could be significant even in the weak coupling and low temperature case due to the large amount of environmental degrees of *** the decoherence process is inspired between the quantum system and an ordinary thermal environment here,the thermal decoherence result is quite general.

关键词： Quantum decoherence Grand canonical ensemble Oscillators

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Neural Dynamics for Distributed Collaborative Control of Manipulators With Time Delays

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IEEE/CAA Journal of Automatica Sinica 2022年第5期9卷 854-863页

作者： Long Jin xin zheng xin Luo School of Information Science and Engineering Lanzhou UniversityLanzhou 730000 IEEE State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China School of Computer Science and Technology Chongqing University of Posts and TelecommunicationsChongqing 400065 Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China

Time-delay phenomena extensively exist in practical systems,e.g.,multi-agent systems,bringing negative impacts on their *** work analyzes a collaborative control problem of redundant manipulators with time delays and proposes a time-delayed and distributed neural dynamics *** assumptions that the network topology is fixed and connected and the existing maximal time delay is no more than a threshold value,it is proved that all manipulators in the distributed network are able to reach a desired *** proposed distributed scheme with time delays considered is converted into a time-variant optimization problem,and a neural dynamics solver is designed to solve it ***,the proposed neural dynamics solver is proved to be stable,convergent and ***,the allowable threshold value of time delay that ensures the proposed scheme’s stability is *** examples and comparisons are provided to intuitively prove the validity of the proposed neural dynamics scheme and solver.

关键词： Distributed collaborative control neural dynamics redundancy resolution repetitive motion planning(RMP) time delay

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Super-resolution processing of passive millimeter-wave images based on adaptive projected Landweber algorithm

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Journal of Systems Engineering and Electronics 2008年第4期19卷 709-716页

作者： zheng xin Yang Jianyu School of Electronic and Engineering Univ. of Electronic Science and Technology of China Chengdu 610054 P. R. China

Passive millimeter wave （PMMW） images inherently have the problem of poor resolution owing to limited aperture dimension. Thus, efficient post-processing is necessary to achieve resolution improvement. An adaptive projected Landweber （APL） super-resolution algorithm using a spectral correction procedure, which attempts to combine the strong points of all of the projected Landweber （PL） iteration and the adaptive relaxation parameter adjustment and the spectral correction method, is proposed. In the algorithm, the PL iterations are implemented as the main image restoration scheme and a spectral correction method is included in which the calculated spectrum within the passband is replaced by the known low frequency component. Then, the algorithm updates the relaxation parameter adaptively at each iteration. A qualitative evaluation of this algorithm is performed with simulated data as well as actual radiometer image captured by 91.5 GHz mechanically scanned radiometer. From experiments, it is found that the super-resolution algorithm obtains better results and enhances the resolution and has lower mean square error （MSE）. These constraints and adaptive character and spectral correction procedures speed up the convergence of the Landweber algorithm and reduce the ringing effects that are caused by regularizing the image restoration problem.

关键词： passive millimeter wave imaging super-resolution Landweber algorithm inverse problems spectral extrapolation.

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Monocular camera and 3D lidar joint calibration

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The Journal of China Universities of Posts and Telecommunications 2020年第4期27卷 91-98页

作者： zheng xin Wu Xiaojun School of Software Engineering Xi'an Jiaotong UniversityXi'an 710049China

Joint calibration of sensors is an important prerequisite in intelligent driving scene retrieval and recognition. A simple and efficient solution is proposed for solving the problem of automatic joint calibration registration between the monocular camera and the 16-line lidar. The study is divided into two parts: single-sensor independent calibration and multi-sensor joint registration, in which the selected objective world is used. The system associates the lidar coordinates with the camera coordinates. The lidar and the camera are used to obtain the normal vectors of the calibration plate and the point cloud data representing the calibration plate by the appropriate algorithm. Iterated closest points(ICP) is the method used for the iterative refinement of the registration.

关键词： calibration registration monocular camera 16-line lidar multi-sensor ICP

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Finite-time control of formation system for multiple flight vehicles subject to actuator saturation

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Journal of Systems Engineering and Electronics 2020年第5期31卷 1019-1030页

作者： ZHAO Enjiao ZHONG Zenan zheng xin School of Automation Harbin Engineering UniversityHarbin 150001China Shanghai Academy of Spaceflight Technology Shanghai 200233China

This paper investigates the problem of formation tracking control for multiple flight vehicle(MFV) system considering actuator saturation constraints. First, the formation tracking control model is established. Then, the problem of formation control of the MFV system is converted to the convergence of a dynamical system, which is obtained by using the differential geometry theory.A class of saturation functions is introduced, and on this basis a second-order finite-time formation control protocol is *** the help of the homogeneous theory and Lasalle's invariance principle, it is theoretically proved that the designed formation protocol could complete the formation task in finite time, and the control inputs are shown to remain within their available actuating limits. Finally, simulations are performed to verify the effectiveness of the scheme.

关键词： formation control multiple flight vehicle(MFV) finite-time actuator saturation

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Dynamic phase transition theory

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Science China(Physics,Mechanics & Astronomy) 2023年第2期66卷 102-108页

作者： Qi-Jun Ye xin-zheng Li State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Frontier Science Center for Nano-optoelectronics and School of PhysicsPeking UniversityBeijing 100871China Interdisciplinary Institute of Light-Element Quantum Materials Research Center for Light-Element Advanced Materialsand Collaborative Innovation Center of Quantum MatterPeking UniversityBeijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China

Thermodynamic conventions suffer from describing dynamical distinctions,especially when the structural and energetic changes induced by rare events are *** using the ensemble theory in the trajectory space,we present a statistical approach to address this *** than spatial particle-particle interaction which dominates thermodynamics,the temporal correlation of events dominates the *** zeros of dynamic partition function mark phase transitions in the space-time,i.e.,dynamic phase transition(DPT),as Yang and Lee formulate traditional phase transitions,and hence determine dynamic phases on both sides of the *** to the role of temperature(pressure) as thermal(mechanical) potential,we interpret the controlling variable of DPT,i.e., dynamic field,as the dynamical *** findings offer possibility towards a unified picture of phase and phase transition.

关键词： transition phase transition

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城市轨道交通车辆基地综合利用项目建筑设计要点研究

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城市建筑 2025年第1期22卷 177-181页

作者：郑昕王宇彤北京城建设计发展集团股份有限公司

文章以车辆基地及车辆基地综合利用的基本概念为基础,对车辆基地综合利用项目的空间形态、规划衔接、功能设置、交通接驳、结构转换、建设管理、品质塑造7个方面进行论述,分析城市轨道交通车辆基地综合利用项目的建筑设计要点,涉及从前... 详细信息

文章以车辆基地及车辆基地综合利用的基本概念为基础,对车辆基地综合利用项目的空间形态、规划衔接、功能设置、交通接驳、结构转换、建设管理、品质塑造7个方面进行论述,分析城市轨道交通车辆基地综合利用项目的建筑设计要点,涉及从前期规划至建设管理过程中影响建筑设计的各个阶段,以期通过展现车辆基地综合利用项目的技术特点,为此类项目的建筑专业设计提供依据与研究基础,提升项目的设计水准。

关键词：城市轨道交通车辆基地综合利用上盖开发建筑设计要点

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体医融合对慢性心力衰竭患者心功能疗效及安全性评价

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中国医药指南 2025年第1期23卷 151-153页

作者：张燕夏普郑鑫三明市中西医结合医院心血管内科福建三明365001

目的探讨体医融合对慢性心力衰竭患者心功能的疗效及安全性评价。方法本研究为单中心、单盲、随机对照试验。纳入2023年6月1日至2024年6月1日就诊于三明市中西医结合医院的慢性心力衰竭患者80例作为研究对象,通过随机数字表法将其分为... 详细信息

目的探讨体医融合对慢性心力衰竭患者心功能的疗效及安全性评价。方法本研究为单中心、单盲、随机对照试验。纳入2023年6月1日至2024年6月1日就诊于三明市中西医结合医院的慢性心力衰竭患者80例作为研究对象,通过随机数字表法将其分为对照组(n=40)和研究组(n=40),对照组予基础治疗,研究组在基础治疗的基础上给予体医融合方案,疗程为12周,对比两组生活质量、运动耐力、心血管健康状况、心脏结构及生化检查。结果治疗后,研究组相较于对照组左心室射血分数(LVEF)、6 min步行距离(6MWD)更高,明尼苏达心衰生活质量量表(MLHFQ)、静息心率(RHR)、左心室舒张末期内径(LVEDD)、左心室收缩末期内径(LVESD)、左心房内径(LAD)、主动脉根部内径(AoD)、去甲肾上腺素(NA)、氨基末端脑利钠肽前体(NT-proBNP)更低(均P<0.05)。结论体医融合对慢性心力衰竭患者生活质量、心脏结构、理化指标均有良好的改善作用。

关键词：体医融合八段锦慢性心力衰竭心功能

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Effect on the Emergence of Cultural School of the Diversity of British Novel in the Renaissance

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学术界 2015年第10期 276-281页

作者： zheng xin School of Music Jinan University Jinan Shandong 250100

The diversified development of British novels in the Renaissance mainly displays in several aspects,that is,lateral reflection of the social development background,specific expression of forming complex psychology of developing social mission,and macro manifestation of the basic needs of the *** is the important factor of contemporary cultural school to find the innovative development road,and also the crucial effect to explore and excavate the development characteristics of contemporary cultural school,expressing the time promoting effect of the development of the diversified development of British novels in the *** from the development characteristics of the C ultural School,the development direction between the social characteristics of times and the basic demand of social groups on social culture agrees with the diversified development of British novels in the Renaissance,and fully demonstrates the effect and value of the latter on the overall development of social cultural school.

关键词：文艺复兴时期社会文化小说英国学派多元化发展社会发展心理发展

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