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Chinese Journal of Chemistry 2024年第12期42卷 1347-1354页

作者： Yi Yang Jingwen Wang Yang Xiao bowei xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Chemical Resource Engineering College of Materials Science and EngineeringBeijing University of Chemical TechnologyBejing 100029China University of Chinese Academy of Sciences Beijing 100049China

Comprehensive Summary Cathode interlayers(CILs)play an essential role in achieving efficient organic solar cells(OSCs).However,the electronic structure at the electrode/CIL/active layer interfaces and the underlying mechanisms for electron collection remain unclear,which becomes a major obstacle to develop high-performance ***,we investigate the relationship of the electron collection abilities of four cross-linked and n-doped CILs(c-NDI:P0,c-NDI:P1,c-NDI:P2,c-NDI:P3)with their electronic structure of space charge region at heterojunction *** accurately calculating the depletion region width according to the barrier height,doping density and permittivity,we put forward that the optimal thickness of CIL should be consistent with the depletion region width to realize the minimum energy *** a result,the depletion region width is largely reduced from 13 nm to 0.8 nm at the indium tin oxide(ITO)/c-NDI:P0 interface,resulting in a decent PCE of 17.7%for the corresponding inverted OSCs.

关键词： Organic solar cells Cathode interlayer Depletion region width Electric conductivity Electron transport Electron transfer Electron extraction process

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基于势博弈的自动化码头路网流量均衡研究

交通运输系统工程与信息 2024年第3期24卷 255-264,332页

作者：许波桅范会尧李军军上海海事大学物流科学与工程研究院上海201306 上海海事大学商船学院上海201306

为提高自动化集装箱码头(自动化码头)路网利用率和均衡性,本文基于自动化码头各子路径的拥挤程度、自动导向车(AGV)的运输速度以及各子路径的选择概率等因素,将分布式的AGV流量调度问题转化为AGV之间的博弈模型,提出一种基于势博弈理论... 详细信息

为提高自动化集装箱码头(自动化码头)路网利用率和均衡性,本文基于自动化码头各子路径的拥挤程度、自动导向车(AGV)的运输速度以及各子路径的选择概率等因素,将分布式的AGV流量调度问题转化为AGV之间的博弈模型,提出一种基于势博弈理论的AGV流量调度模型;设计分布式路径选择算法帮助AGV更新策略;系统信息更新算法用于更新道路信息并选择更新策略的AGV;通过这两种算法求解AGV的均衡调度策略。结合3艘实际船舶任务,进行数值仿真实验。仿真结果表明:分布式路径选择方法相较于传统路径选择方式具有更优性,船舶任务量、AGV数量及速度是影响AGV作业效益的关键因素,当AGV的速度为6 m·s^(-1)时,船舶的总收益最大。本文可以为码头管理者确定AGV调度策略提供决策支持。

关键词：物流工程流量均衡势博弈自动导向车自动化集装箱码头

A SIMPLE DERIVATION OF FIELD THEORY OF ISING QUANTUM CHAIN

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Chinese Physics Letters 1990年第9期7卷 385-387页

作者： xu bowei Department of Physics Shanghai Jiaotong UniversityShanghai 200030

A simple derivation of the field theory of Ising quantum chain shows that the Ising model is equivalent to the free Majorana real spinor *** the critical point,the field equation is conformally covariant.

关键词： field Ising derivation

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考虑零碳航线的集装箱运输网络抗毁性研究

交通运输系统工程与信息 2024年第5期24卷 217-225页

作者：李军军苗泉利许波桅崔秦珂刘丛跃朱江玟上海海事大学商船学院上海201306 上海海事大学物流科学与工程研究院上海201306 上海中谷物流股份有限公司箱管部上海200120

随着世界各国对航运碳排放的重视,零碳航线作为减少碳排放的创新方式备受关注。集装箱运输过程可以利用复杂网络拓扑的形式呈现,虽然零碳航线的加入不会改变航运网络的结构,但由于零碳航线上港口的独特性质和作用,会对集装箱运输网络产... 详细信息

随着世界各国对航运碳排放的重视,零碳航线作为减少碳排放的创新方式备受关注。集装箱运输过程可以利用复杂网络拓扑的形式呈现,虽然零碳航线的加入不会改变航运网络的结构,但由于零碳航线上港口的独特性质和作用,会对集装箱运输网络产生一定影响。本文根据港口实际数据构建引入零碳航线的集装箱运输网络模型,以网络效率、最大联通子图规模、绿色港口抗毁性指数这3个指标衡量网络的抗毁性能。通过模拟实验选择蓄意攻击触发网络级联效应,分析容量参数、绿色港口数、负载分配系数对集装箱运输网络抗毁性的影响。结果表明,零碳航线的加入对集装箱运输网络抗毁性能影响较大;25%的港口为绿色港口时,能兼顾网络的三方面抗毁性能,包括网络全局效率、绿色港口抗毁性指数和最大连通子图规模;负载分配系数为4时能够提高运输网络的抗毁性能,削弱零碳航线加入造成的影响。重要节点受到攻击后,网络效率、最大联通子图规模均大幅度下降。

关键词：水路运输零碳航线抗毁性集装箱运输网络级联效应

Solution-Processed Silver Nanowire as Flexible Transparent Electrodes in Organic Solar Cells

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Chinese Journal of Chemistry 2021年第8期39卷 2315-2329页

作者： Yi Yang bowei xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Organic solar cells(OSCs)have attracted much attention due to their advantages in fabricating flexible and semi-transparent ***,the light weight,flexibility and spectral adjustability make OSCs superior to silicon,perovskite and other thin film based solar cells in applications of integrated photovoltaic devices and wearable *** flexible and semi-transparent OSCs,transparent conducting electrodes(TCEs)play a key role in obtaining high *** various TCEs,silver1 n anowire(AgNW)has become a promisi ng can didate due to its low sheet resistance,high optical transparency,excellent mechanical flexibility and solution *** this article,we review the recent advances in AgNW-based TCEs and their applications in the field of ***,we introduce the general properties of AgNW including optoelectronic and mechanical ***,the preparation methods of AgNW are discussed,along with some approaches on the optimization of AgNW to overcome the shortcomings of ***,we discuss the applications of AgNW as TCEs in fabricating flexible and semi-transparent OSCs,including the use of AgNW as bottom and top ***,we point out the challenges in AgNW-based TCEs and suggest several guidelines for preparing AgNW so as to meet the demands for the practical use of OSCs.

关键词： Silver Nanostructures Conducting materials Electrode Organic solar cells

A Uniform Reference Line Based Differential Phase Shifter with Wide Phase Range and Wide Bandwidth

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China Communications 2022年第5期19卷 102-111页

作者： Canrong Fu bowei xu Shaoyong Zheng School of Electronics and Information Technology Sun Yat-sen UniversityGuangzhou 51006China

To implement the multi-way phase shifting maintaining the compact size and simplicity in structure,the uniform reference line concept was proposed for the differential phase ***,the performance in bandwidth and phase range deteriorates with the additional requirements *** solve this problem,a quarter wavelength coupled line section loaded with open/short stubs is proposed as the basic element to implement the main line and also reference *** to the theoretical analysis on this basic element,the loading stubs can be used to control the phase shift and also the phase slope of the basic element without affecting the amplitude *** the predetermined parameters of the uniform reference line,only two parameters are required for the implementation of different differential phase *** demonstrates the high simplicity of the proposed *** demonstration,an eight-way differential phase shifter operating at 3.5 GHz was implemented using the vertically installed planar *** prototype was further fabricated and *** agreement between simulation and measurement can be *** implemented phase shifter can provide a wide range of phase shifting values from 45°to 315°with reference to the uniform reference line over a relative bandwidth of 62.3%.

关键词： differential phase shifter uniform reference line wideband wide phase range vertically installed planar

Facile solution-processed molybdenum oxide as hole transporting material for efficient organic solar cell

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Journal of Energy Chemistry 2022年第6期31卷 108-114,I0004页

作者： Qian Kang Chenyi Yang bowei xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of Chemistry Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Chemical Resource Engineering College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

The large energy barrier in hole extraction still remains a great challenge in developing hole transporting layer (HTL) materials for organic solar cells (OSCs).Thus,solution-processed HTL materials with excellent hole collection ability and good compatibility with large-area processing technique are strongly desired for ***,we developed a cost-effective and solution-processed MoO_(3)HTL for efficient *** adding a small amount of glucose as reducing reagent into the ammonium molybdate precursor solution,a deeply n-doped MoO_(3),namely G:Mo,was prepared through the sol–gel *** to pristine MoO_(3),the conductivity of G:Mo was enhanced by two orders of magnitude,which greatly improved the hole collection ability of the *** with G:Mo can exhibit comparable PCE to the PEDOT:PSS *** PBDB-TF:BTP-eC9 as the active layer,a PCE of 17.1%is obtained for the device,which is the highest PCE value for OSC using a solution-processed MoO_(3)*** importantly,G:Mo is well compatible with the blade-coating *** OSC using a blade-coated G:Mo showed almost no PCE loss as compared to the device with spin-coated G:Mo *** results from this work indicate that G:Mo is a promising HTL material for the practical production of OSCs.

关键词： Printable n-doping Molybdenum oxide High conductivities Anode interlayers

CONFORMALLY COVARIANT EQUATION OF SECOND RANK ANTISYMMETRIC TENSOR FIELD

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Chinese Physics Letters 1989年第1期6卷 1-3页

作者： xu bowei Department of Physics Shanghai Jiaotong University

The manifestly SO(4,2)invariant equation of second rank antisymmetric tensor field is got in 6-dimensional space with subsidiary *** equations lead naturelly to conformally covariant field equation that we obtained in... 详细信息

关键词： conditions. space. equation

Significant influence of doping effect on photovoltaic performance of efficient fullerene-free polymer solar cells

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Journal of Energy Chemistry 2020年第4期29卷 40-46页

作者： Qian Kang Qi Wang Cunbin An Chang He bowei xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

The modification mechanism of the water/alcohol cathode interlayer is one of the most complicated problems in the field of organic photovoltaics,which has not been clearly elucidated yet;this greatly restricts the further enhancement of the PCE for polymer solar ***,we clarified the different effects of PFN and its derivatives,namely,poly[(9,9-bis(3’-((N,N-dimethyl)-N-ethylammonium)-propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)](PFN-Br) in modifying fullerene-free *** is found for the first time that doping on IT-4F by the amino group of PFN leads to the unfavorable charge accumulation,and hence,forms a dense layer of electronegative molecule due to the poor electron transport capacity of the non-fullerene acceptor *** electronegative molecular layer can block the electron transfer from the active layer to the interlayer and cause serious charge recombination at the active layer/cathode *** mechanism could be verified by the ESR measurement and electron-only *** replacing PFN with PFN-Br,the excessive doping effect between the cathode interlayer and IT-4F is eliminated,by which the charge transport and collection can be greatly *** a result,a high PCE of 13.5%was achieved in the fullerene-free PSCs.

关键词： Cathode interlayer Doping effect Electron transport Power conversion efficiency Electron-only device

A ternary organic solar cell with 300 nm thick active layer shows over 14% efficiency

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Science China Chemistry 2020年第1期63卷 21-27页

作者： Lijiao Ma Ye xu Yunfei Zu Qing Liao bowei xu Cunbin An Shaoqing Zhang Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for MolecularSciences CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry Chinese Academy of SciencesBeijing 100190China School of Chemistry and Biology Engineering University of Science and Technology BeijingBeijing 100083China University of Chinese Academy of Sciences Beijing 100049China

In order to meet the requirements for making organic solar cells(OSCs)through solution printing techniques,great efforts have been devoted into developing high performance OSCs with relatively thicker active *** this work,a thick-film(300 nm)ternary OSC with a power conversion efficiency of 14.3%is fabricated by introducing phenyl-C61-butyric-acid-methyl ester(PC61BM)into a PBDB-T-2Cl:BTP-4 F host *** addition of PC61BM is found to be helpful for improving the hole and electron mobilities,and thus facilitates charge transport as well as suppresses charge recombination in the active layers,leading to the improved efficiencies of OSCs with relatively thicker active *** results demonstrate the feasibility of employing fullerene derivative PC61BM to construct a high-efficiency thick-film ternary device,which would promote the development of thick layer ternary OSCs to fulfill the requirements of future roll to roll production.

关键词： ternary organic solar cells thick active layers carrier mobilities high efficiency