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Dual‑Donor‑Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

Nano-Micro Letters 2025年第3期17卷 376-388页

作者： Anhai Liang Yuqing Sun Sein Chung Jiyeong Shin Kangbo Sun Chaofeng Zhu Jingjing zhao.zhenmin zhao.Yufei Zhong Guangye Zhang Kilwon Cho Zhipeng Kan Center On Nanoenergy Research Institute of Science and Technology for Carbon Peak&NeutralitySchool of Physical Science&TechnologyGuangxi UniversityNanning 530004People’s Republic of China Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673South Korea College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118People’s Republic of China Zhejiang Engineering Research Center for Fabrication and Application of Advanced Photovoltaic Materials School of Materials Science and EngineeringNingboTech UniversityNingbo 315100People’s Republic of China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning 530004People’s Republic of China

Trap-assisted charge recombination is one of the primary limitationsof restricting the performance of organic solar cells. However, effectivelyreducing the presence of traps in the photoactive layer remains ***, wide bandgap polymer donor PTzBI-dF is demonstrated as an effectivemodulator for enhancing the crystallinity of the bulk heterojunction active layerscomposed of D18 derivatives blended with Y6, leading to dense and orderedmolecular packings, and thus, improves photoluminescence quenching *** a result, the photovoltaic devices exhibit reduced trap-assisted charge recombinationlosses, achieving an optimized power conversion efficiency of over 19%.Besides the efficiency enhancement, the devices comprised of PTzBI-dF as athird component simultaneously attain decreased current leakage, improved chargecarrier mobilities, and suppressed bimolecular charge recombination, leading toreduced energy losses. The advanced crystalline structures induced by PTzBI-dFand its characteristics, such as well-aligned energy level, and complementaryabsorption spectra, are ascribed to the promising performance *** findings suggest that donor phase engineering is a feasible approach to tuning the molecular packings in the active layer, providingguidelines for designing effective morphology modulators for high-performance organic solar cells.

关键词： Trap-assisted charge recombination Photoluminescence Miscibility Current leakage Power conversion efficiency

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Numerical Simulation of the Dynamic Behaviors of a Gas Tungsten Welding Arc for Joining Magnesium Alloy AZ61A

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Acta Metallurgica Sinica(English Letters) 2013年第5期26卷 588-596页

作者： zhenmin WANG Fang YAN Pengcheng zhao School of Mechanical & Automotive Engineering South China University of Technology College of Electromechanical Engineering Qingdao University of Science and Technology

Based on the Magneto-Hydro-Dynamic（MHD） theory, a united three-dimensional（3D） transient numerical model is developed to investigate the dynamic behaviors of arc plasma for a magnesium alloy AZ61A gas tungsten arc welding（GTAW） arc. The arc, electrode and workpiece are integrated into one calculation domain to avoid both presumed distribution of the current density at the electrode tip and the assumption of constant conditions of interface between welding arc and workpiece. The distributions of electric potential, current density, magnetic flux density, electromagnetic force, velocity, temperature, and pressure of the arc plasma in the 3D space are analyzed by using the numerical model. Results indicate that the maximum gradient of the electric potential in the whole arc space exists around the electrode tip, where the electric current density, electromagnetic force, and temperature are also the maximum. However, maximum pressure is found at the velocity stagnation, which is above the *** between predicted temperature and measured one in arc region shows a good agreement.

关键词： GTAW Arc MHD theory Dynamic behavior Numerical simulation

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New Layered SOA-Based Architecture for Multi-robots Cooperative Online SLAM

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Chinese Journal of Electronics 2014年第1期23卷 25-30页

作者： CAI Yunfei TANG zhenmin zhao.Chunxia Institute of Pattern Recognition and Artificial Intelligence Nanjing University of Science and Technology

A new layered multi-robots architecture for cooperative online simultaneous localization and mapping based on Service-oriented architecture(SOA) is proposed. This architecture is constructed by the concepts of service-oriented and loosely coupled center *** methods make robots' underlying function realization be transparent in cooperation and avoid the impact affected by robot heterogeneous characteristics, which will be beneficial to the system construction, expansion, restructuring and maintenance. All data packages follow the SOA unified data format, which can avoid the impact affected by sensor heterogeneous characteristics. The point to point serving model reduces the path of data transmission which can improve the timeliness of the system. All of these features can satisfy the requirements of multi-robots cooperative online SLAM. The simulation results show the feasibility, applicability and practicability of this architecture.

关键词： Service-oriented architecture(SOA) Multi-robot cooperative online SLAM(MRCO-SLAM) Loosely coupled

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Effect of deformation and cooling rate on the transformation behavior and microstructure of X70 steels

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Journal of University of Science and Technology Beijing 2007年第5期14卷 410-413页

作者： Zhiping zhao.zhenmin Wang Hongmei Zhang Lifeng Qiaol Angang Steel Company Limited Anshan 114008 China Material Science and Engineering School University of Science and Technology Beijing Beijing 100083 China School of Material Science and Engineering University of Science and Technology Liaoning Anshan 114044 China

The effects of the deformation in the non-recrystallization region of austenite and the cooling rate on the transformation behavior and microstructure of low-carbon low-alloy steel for pipeline application were studied on the thermal-mechanical simulator Gleeble-1500. It was shown that an increase in deformation amount can greatly increase the nucleation site of ferrite when deformed in the non-recrystallization region of austenite, and an increase in nucleation ratio can greatly refine grains. When the cooling rate is accelerated, the driving force of nucleation is increased and the nucleation rate also improves. Ultra-refine grains can be obtained by controlled rolling. The high density of ferrite nucleus, which forms along the austenite grain boundary, twin interface, and deformation band are introduced in the matrix of austenite by the control of hot rolling, after which the microstructure can be refined. It was found that the acicular ferrite has a very fine sub-structure, high dislocation density, and a thin slab with ultra-fine grains. Small M/A islands and cementite are precipitated on the matrix of the slabs by the analysis technique of TEM and SEM.

关键词： pipeline steel acicular ferrite dislocation M/A island

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A new approach of formation navigation derived from multi-robots cooperative online FastSLAM

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控制理论与应用（英文版） 2012年第4期10卷 451-457页

作者： Yunfei CAI zhenmin TANG Chunxia zhao Institute of Pattern Recognition and Artificial Intelligence Nanjing University of Science and Technology

A new formation navigation approach derived from multi-robots cooperative online FastSLAM is proposed. In this approach, the leader and follower robots are defined. The posteriori estimation of the leader robot state is treated as a relative reference for all follower robots to correct their state priori estimations. The control volume of individual follower will be achieved from the results of the corrected estimation. All robots are observed as landmarks with known associations by the others and are considered in their landmarks updating. By the method, the errors of the robot posterior estimations are reduced and the formation is well kept. The simulation and physical experiment results show that the multi-robots relative localization accuracy is improved and the formation navigation control is more stable and efficient than normal leader-following strategy. The algorithm is easy in implementation.

关键词： Multi-robots Formation navigation FastSLAM

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Secrecy energy efficiency maximization for UAV-enabled multi-hop mobile relay system

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The Journal of China Universities of Posts and Telecommunications 2022年第3期29卷 81-91页

作者： Miao Jiansong Li Hairui Zheng Ziyuan Wang Chu zhao.zhenmin Beijing Laboratory of Advanced Information Networks Beijing University of Posts and TelecommunicationsBeijing 100876China

To deal with the secrecy issues and energy efficiency issues in the unmanned aerial vehicles(UAVs) assisted communication systems, an UAV-enabled multi-hop mobile relay system is studied in an urban environment. Multiple rotary-wing UAVs with energy budget considerations are employed as relays to forward confidential information between two ground nodes in the presence of multiple passive eavesdroppers. The system secrecy energy efficiency(SEE), defined by the ratio of minimum achievable secrecy rate(SR) to total propulsion energy consumption(PEC), is maximized via jointly optimizing the trajectory and transmit power of each UAV relay. To solve the formulated non-convex fractional optimization problem subject to mobility, transmit power and information-causality constraints, an effective iterative algorithm is proposed by applying the updated-rate-assisted block coordinate decent method, successive convex approximation(SCA) technique and Dinkelbach method. Simulation results demonstrate the effectiveness of the proposed joint trajectory design and power control scheme.

关键词： secrecy transmission unmanned aerial vehicle(UAV) trajectory optimization mobile relay

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Experimental Constraints on Formation of Low-Cr# Chromitite: Effect of Variable H2O and Cr2O3 on Boninitic-Magma and Harzburgite Reactions

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Journal of Earth Science 2020年第4期31卷 709-722页

作者： Yage zhao.Yanfei Zhang Chao Wang zhenmin Jin Qijin Xu College of Oceanography Hohai UniversityNanjing 210098China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China

Reactions between a boninitic or basaltic magma and harzburgite at shallow mantle depths are thought to be closely related to the formation of podiform chromitites,but little experimental data is available on these *** this study,a series of experiments were conducted at 1.5GPa and 1 000–1 400 oC to investigate the interactions between boninitic magma and harzburgite in homogenous mixed systems with varied bulk concentrations of water(~0.7 wt.%–10 wt.%)and Cr2O3(~0.2 wt.%–4 wt.%).In the experimental charges,chromite grains can be observed coexisting with orthopyroxene,clinopyroxene±olivine,and quenched melt in the Cr-bearing *** bulk concentration of Cr2O3 in the starting material has a slight effect on compositional changes in the chromites ***,the Cr#(Cr#=100×Cr/(Cr+Al))and Mg#(Mg#=100×Mg/(Mg+Fe))values for the chromites exhibit positive and negative correlations,respectively,with the bulk H2O *** 1 100 oC,chromite Cr#values range from^33–35 to^58–65,and chromite Mg#values range from^70–73 to^55–58when bulk H2O contents in the starting material are increased from^0.7 wt.%to^10 wt.%.The experimentally produced chromites have compositions(as expressed by Cr#,Mg#,and Ni O and Mn O contents)similar to natural chromites from low-Cr#chromitite *** suggest that the interactions between boninitic magmas with varied H2O contents and harzburgite in a shallow mantle wedge could be a possible mechanism that forms the low-Cr#chromitites found in *** emphasize here that H2O may play an important role in the compositional evolutions of natural chromitites.

关键词： low-Cr#chromitite boninitic magma harzburgite melt-rock reaction

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Application of digital technology in nasal reconstruction

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Chinese Journal of Plastic and Reconstructive Surgery 2021年第4期3卷 204-208页

作者： Yidan Sun zhenmin zhao.Yang An Department of Plastic Surgery Peking University Third HospitalBeijing 100191China

Nasal defects are facial defects caused by trauma,tumors,or congenital diseases that seriously damage a patient’s physical and mental *** defects,from skin defects to total nasal defects,require surgical repair and reconstruction to restore the appearance and function of the nose,which have always been challenges for *** development of digital technology has increased the possibility of nasal *** technology is involved in the preoperative,intraoperative,and postoperative stages of nasal construction and is of great significance in improving the effect of this *** article reviews the application of major digital technologies,including three-dimensional(3D)imaging technology,computer-assisted surgical navigation,and 3D printing,in nasal reconstruction and discusses the shortcomings of the current application of digital technology.

关键词： Nasal reconstruction Digital technology Computer-aided design/manufacturing Three-dimensional printing

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Effects of the hierarchical pyrolysis polyaniline on reversible hydrogen storage of LiBH4

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Progress in Natural Science:Materials International 2018年第4期28卷 529-533页

作者： zhenmin Ding Yufei Ma DANDan Peng Lu Zhang Yumeng zhao.Yuan Li Shumin Han State Key Laboratory of Metastable Materials Science and Technology Yanshan University Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical Engineering Yanshan University Lucky Healthcare Company Limited

In this work,LiBH;–20 wt%PP composite was prepared by ball-milling with as-synthesized hierarchical pyrolysis polyaniline（PP）and LiBH;,and the hydrogen sorption performance as well as catalytic mechanism of the composite was *** is found that the onset desorption temperature of the composite decreases to 75°C,almost 235°C lower than that of the milled LiBH;.Moreover,the composite could release 4.1 wt%H;and rehydrogenate a total of 4.4 wt%H;when the temperature raiseds up to 400°C,showing an outstanding reversibility,which even 3.9 wt%H;can be kept after five *** scanning electron microscopy（SEM）observation and X-ray diffraction（XRD）analysis,we found that the PP surface forms some nanoholes after hydrogenation-dehydrogenation cycles,which leads to the confinement of some LiBH;in the PP nanoporous structure,therefore,the hydrogen sorption kinetics and reversibility are significantly *** addition,we also found the oxygenic groups of the PP can react with LiBH;forming LiBO;and Li;BO;,where the containing Li–B–O bonds loaded in the porous structure of the PP catalyze the hydrogenation reaction of LiBH;.

关键词： LiBH4 Pyrolysis polyaniline Complex hydride Hydrogen storage materials Reversible de/hydrogenation

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Mapping Toll-Like Receptor Signaling Pathway Genes of Zhikong Scallop(Chlamys farreri) with FISH

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Journal of Ocean University of China 2015年第6期14卷 1075-1081页

作者： zhao.Bosong zhao.Liang LIAO Huan CHENG Jie LIAN Shanshan LI Xuan HUANG Xiaoting BAO zhenmin Key Laboratory of Marine Genetics and Breeding of Ministry of Education College of Marine Life SciencesOcean University of China

Toll-like receptor(TLR) signaling pathway plays a pivotal role in the innate immune system. Studies on TLR signaling pathway genes in Zhikong scallop(Chlamys farreri) have mainly focused on sequence analysis and expression profiling, no research has been carried out on their localization. The chromosomal position of TLR signaling pathway genes can be valuable for assemblying scallop genome and analysizing gene regulatory networks. In the present study, five key TLR signaling pathway genes(Cf TLR, Cf Myd88, Cf TRAF6, Cf NFκB, and Cf IκB) containing bacterial artificial chromosomes(BACs) were isolated and physically mapped through fluorescence in situ hybridization on five non-homologous chromosome pairs, showing a similar distribution to another five model species. The isolation and mapping of these key immune genes of C. farreri will aid to the research on innate immunity, assignment of interested genes to chromosomes, and integration of physical, linkage and cytogenetic maps of this species.

关键词： immunogenetics Chlamys farreri TLR signaling pathway FISH

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