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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

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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

兼容50G PON的多模统一平台架构及实现方法

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网络新媒体技术 2024年第1期13卷 63-69页

作者：杨淑瑶李祥辉许博威刘安琪武汉邮电科学研究院武汉430074 烽火通信科技股份有限公司武汉430205

目前网络中多种PON模式共存,而传统的OLT软件处理多种PON模式时存在兼容能力差、开发繁琐、重复等问题。本文提出了一种兼容多模OLT的统一平台架构,支持现存多种PON模式,并具有优秀的向后兼容能力。该架构通过不同的速率组合对应SerDes... 详细信息

目前网络中多种PON模式共存,而传统的OLT软件处理多种PON模式时存在兼容能力差、开发繁琐、重复等问题。本文提出了一种兼容多模OLT的统一平台架构,支持现存多种PON模式,并具有优秀的向后兼容能力。该架构通过不同的速率组合对应SerDes通道实现了速率兼容,并对ONU进行统一管理和带宽分配,在软件上实现了多模协议栈兼容和多芯片适配。本文采用不同OLT业务板卡搭载统一平台,对注册和打流业务功能进行测试。结果表明,该平台架构兼容包括50G PON在内的6种PON模式,并支持在不同板卡上的模式切换。同时,能降低OLT产品的管理难度,缩短项目周期,降低研发成本,对50G PON和未来PON网络新技术的兼容和平滑升级具有重要意义。

关键词： 50G PON 多模 OLT 统一平台架构协议兼容 SDK 软件

焊接热循环峰值温度对1000 MPa级超高强钢热影响区组织性能的影响

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热力发电 2024年第4期53卷 165-173页

作者：孙琦李太江李巍李生文余阳李聚涛娄正计许博炜程晔锋西安热工研究院有限公司陕西西安710054

为研究1 000 MPa级超高强钢焊接热影响区(HAZ)不同区域的组织性能,采用焊接热模拟技术制备了试验钢在不同热循环峰值温度下的试样,通过夏比冲击试验研究了HAZ不同区域的冲击韧性。结果表明:在亚临界区(SCHAZ)、临界区(ICHAZ)和细晶区(FG... 详细信息

为研究1 000 MPa级超高强钢焊接热影响区(HAZ)不同区域的组织性能,采用焊接热模拟技术制备了试验钢在不同热循环峰值温度下的试样,通过夏比冲击试验研究了HAZ不同区域的冲击韧性。结果表明:在亚临界区(SCHAZ)、临界区(ICHAZ)和细晶区(FGHAZ),样品冲击吸收能量、裂纹扩展能量和动态冲击韧度较大,断口上形成较大面积的脚跟形纤维区和剪切唇,微观可看到大小不一的韧窝,样品冲击韧性较好;在粗晶区(CGHAZ),样品各项冲击数据均急剧下降,断口呈宏观脆性断裂,几乎全为放射区,微观下显示准解理断裂特征,表明裂纹扩展时受到的阻力减小,裂纹萌生后稳定扩展的时间减少,失稳扩展较快,样品的冲击韧性恶化,CGHAZ为HAZ中的韧性谷区;组织分析表明,粗大的晶粒和粗大的马氏体板条是导致CGHAZ脆化的主要原因。该结论为探究1 000 MPa级超高强钢在水电工程中的优选研制及工程应用奠定了理论基础。

关键词：超高强钢焊接热模拟焊接热影响区冲击吸收能量断裂韧度

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

Highly Stable Organic Solar Cells Based on an Ultraviolet-Resistant Cathode Interfacial Layer

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CCS Chemistry 2022年第3期4卷 938-948页

作者： Qing Liao Qian Kang Yi Yang Zhong Zheng Jinzhao Qin bowei xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

Although the photovoltaic efficiency of organic solar cells(OSCs)has exceeded 17%,poor lifetime excludes OSCs from practical *** particular,UV rays in sunlight may cause the decomposition of organic photovoltaic materials,which has been proved to be the main reason for the efficiency *** present,there is still no effective approach to substantially improve the device ***,we fabricate a highly efficient OSC with exceptional stability under sunlight illumination by incorporating a UV-resistant cathode interlayer(CIL),namely(sulfobetaine-N,Ndimethylamino)propyl naphthalene diimide(NDI-B).NDI-B was designed and synthesized based on the naphthalene diimide(NDI)unit,thereby exhibiting excellent capability of electron ***,NDI-B shows strong absorption in the UV region and has good UV *** using NDI-B as a CIL exhibited a photovoltaic efficiency of 17.2%,representing the state-of-the-art photovoltaic performance of ***,the NDI-B-modified OSC exhibited a T80 of over 1800 h under full-sun AM 1.5 G illumination(100 mW cm^(−2)),which represents the best stability for *** demonstrate that the unique ability of the NDI-B interlayer to convert UV light to an additional photocurrent can effectively protect photovoltaic materials from UV-induced decomposition,which is the key to obtain high OSC stability under operational conditions.

关键词： organic solar cell power conversion efficiency cathode interlayer device stability zwitterion

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