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Polaron mobility modulation by bandgap engineering in black phaseα-FAPbI_(3)

Journal of Energy Chemistry 2023年第1期76卷 175-180,I0005页

作者： Chunwei Wang Zeyu Zhang zhuang xiong Xingyu Yue Bo Zhang Tingyuan jia Zhengzheng Liu Juan Du Yuxin Leng Kuan Sun Ruxin Li State key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024ZhejiangChina MOE key Laboratory of Low-grade Energy Utilization Technologies and Systems CQU-NUS Renewable Energy Materials&Devices Joint LaboratorySchool of Energy&Power EngineeringChongqing UniversityChongqing 400044China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Lead halide hybrid perovskites(LHP)have emerged as one of the most promising photovoltaic materials for their remarkable solar energy conversion *** transportation of the photoinduced carriers in LHP could screen the defect recombination with the help of the large polaron ***,the physical insight of the relationship between the superior optical-electronic performance of perovskite and its polaron dynamics related to the electron-lattice strong coupling induced by the substitution engineering is still lack of ***,the bandgap modulated thin films ofα-FAPbI_(3)with different element substitution is investigated by the time resolved Terahertz *** find the polaron recombination dynamics could be prolonged in LHP with a relatively smaller bandgap,even though the formation of polaron will not be affected ***,the large polaron mobility in(FAPb I_(3))0.95(MAPbI_(3))0.05thin film is~30%larger than that in(FAPb I_(3))0.85(MAPbBr_(3))*** larger mobility in(FAPb I_(3))0.95(MAPb I_(3))0.05could be assigned to the slowing down of the carrier scattering ***,the physical origin of the higher carrier mobility in the(FAPb I_(3))0.95(MAPbI_(3))0.05should be related with the lattice distortion and enhanced electron–phonon coupling induced by the *** addition,(FAPbI_(3))0.95(MAPbI_(3))0.05will lose fewer active carriers during the polaron cooling process than that in(FAPb I_(3))0.85(MAPbBr_(3)),indicating lower thermal dissipation in(FAPbI_(3))0.95(MAPbI_(3))*** results suggest that besides the smaller bandgap,the higher polaron mobility improved by the substitution engineering inα-FAPbI_(3)can also be an important factor for the high PCE of the black phaseα-FAPbI_(3)based solar cell devices.

关键词： Perovskites Polaron Mobility Terahertz spectroscopy

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A Note on Infinite Conservation Laws in Liouville Equation

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Chinese Physics Letters 1992年第7期9卷 337-340页

作者： WU Pingfeng GUAN Xiwen xiong zhuang ZHOU Huanqiang Department of Physics Sichuan Normal UniversityChengdu 610066

In this note,two Lax representations are presented for the Liouville *** each representation one may deduce an infinite family of conserved quantities in ***,members coming from different families are not in involutio... 详细信息

关键词： equation Liouville quantities

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A dynamic algorithm for trust inference based on double DQN in the internet of things

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Digital Communications and Networks 2024年第4期10卷 1024-1034页

作者： Xiaodong zhuang Xiangrong Tong School of Computer and Control Engineering Yantai UniversityYantai264005China

The development of the Internet of Things(IoT)has brought great convenience to ***,some information security problems such as privacy leakage are caused by communicating with risky *** is a challenge to choose reliable users with which to interact in the ***,trust plays a crucial role in the IoT because trust may avoid some *** usually choose reliable users with high trust to maximize their own interests based on reinforcement ***,trust propagation is time-consuming,and trust changes with the interaction process in social *** track the dynamic changes in trust values,a dynamic trust inference algorithm named Dynamic Double DQN Trust(Dy-DDQNTrust)is proposed to predict the indirect trust values of two users without direct contact with each *** proposed algorithm simulates the interactions among users by double ***,CurrentNet and TargetNet networks are used to select users for *** users with high trust are chosen to interact in future ***,the trust value is updated dynamically until a reliable trust path is found according to the result of the ***,the trust value between indirect users is inferred by aggregating the opinions from multiple users through a Modified Collaborative Filtering Averagebased Similarity(SMCFAvg)aggregation *** are carried out on the FilmTrust and the Epinions *** with TidalTrust,MoleTrust,DDQNTrust,DyTrust and Dynamic Weighted Heuristic trust path Search algorithm(DWHS),our dynamic trust inference algorithm has higher prediction accuracy and better scalability.

关键词： Internet of things Information security Reinforcement learning Trust propagation Trust inference

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Conductive MOFs with Photophysical Properties:Applications and Thin-Film Fabrication

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Nano-Micro Letters 2020年第10期12卷 132-163页

作者： Zeyu zhuang Dingxin Liu Skate key Laboratory of Optoelectronic Materials and Technologies Nanotechnology Research CenterSchool of Materials Science and EngineeringSun Yat-Sen UniversityGuangzhou 510275People’s Republic of China

Metal-organic frameworks(MOFs)are a class of hybrid materials with many promising *** recent years,lots of investigations have been oriented toward applications of MOFs in electronic and photoelectronic *** many high-quality reviews have focused on synthesis and mechanisms of electrically conductive MOFs,few of them focus on their photophysical ***,we provide an in-depth review on photoconductive and photoluminescent properties of conductive MOFs together with their corresponding applications in solar cells,luminescent sensing,light emitting,and so *** integration of MOFs with practical devices,recent advances in fabrication of photoactive MOF thin films are also summarized.

关键词： Metal-organic frameworks Photoconductivity Photoluminescence Thin films

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Performance and recent improvement in microbial fuel cells for simultaneous carbon and nitrogen removal: A review

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Journal of Environmental Sciences 2016年第1期28卷 242-248页

作者： Haishu Sun Shengjun Xu Guoqiang zhuang Xuliang zhuang Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

Microbial fuel cells（MFCs） have become a promising technology for wastewater treatment accompanying electricity generation. Carbon and nitrogen removal can be achieved by utilizing the electron transfer between the anode and cathode in an MFC. However,large-scale power production and high removal efficiency must be achieved at a low cost to make MFCs practical and economically competitive in the future. This article reviews the principles, feasibility and bottlenecks of MFCs for simultaneous carbon and nitrogen removal, the recent advances and prospective strategies for performance improvement, as well as the involved microbes and electron transfer mechanisms.

关键词： Microbial fuel cells Wastewater treatment Electricity generation Simultaneous carbon and nitrogen removal Electron transfer

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Boundary Control of Coupled Non-Constant Parameter Systems of Time Fractional PDEs with Different-Type Boundary Conditions

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Journal of Systems Science & Complexity 2023年第1期36卷 273-293页

作者： CHEN Juan zhuang Bo Aliyun School of Big Data Changzhou UniversityChangzhou 213164China School of Information Engineering Binzhou UniversityBinzhou 256600China

This paper addresses a boundary state feedback control problem for a coupled system of time fractional partial differential equations(PDEs)with non-constant(space-dependent)coefficients and different-type boundary conditions(BCs).The BCs could be heterogeneous-type or ***,this coupled system has different BCs at the uncontrolled side for heterogeneous-type and the same BCs at the uncontrolled side for *** main contribution is to extend PDE backstepping to the boundary control problem of time fractional PDEs with space-dependent parameters and different-type *** the backstepping transformation and the fractional Lyapunov method,the Mittag-Leffler stability of the closed-loop system is obtained.A numerical scheme is proposed to simulate the fractional case when kernel equations have not an explicit solution.

关键词： Boundary control coupled systems heterogeneous mittag-leffler stability time fractional PDEs with space-dependent coefficients

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Multiscale computation on feedforward neural network and recurrent neural network

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Frontiers of Structural and Civil Engineering 2020年第6期14卷 1285-1298页

作者： Bin LI Xiaoying zhuang Department of Geotechnical Engineering Tongji UniversityShanghai 200092China

Homogenization methods can be used to predict the effective macroscopic properties of materials that are heterogenous at micro-or *** existing methods for homogenization,computational homogenization is widely used in multiscale analyses of structures and *** computational homogenization suffers from long computing times,which substantially limits its application in analyzing engineering *** neural networks can be used to construct fully decoupled approaches in nonlinear multiscale methods by mapping macroscopic loading and microscopic *** homogenization methods for nonlinear material and implementation of offline multiscale computation are studied to generate data *** article intends to model the multiscale constitution using feedforward neural network(FNN)and recurrent neural network(RNN),and appropriate set of loading paths are selected to effectively predict the materials behavior along unknown *** to two-dimensional multiscale analysis are tested and discussed in detail.

关键词： multiscale method constitutive model feedforward neural network recurrent neural network

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Cesium removal from radioactive wastewater by adsorption and membrane technology

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 161-175页

作者： Shuting zhuang Jianlong Wang School of Environment&Natural Resources Renmin University of ChinaBeijing 100872China Laboratory of Environmental Technology INETTsinghua UniversityBeijing 100084China Beijing key Laboratory of Radioactive Waste Treatment INETTsinghua UniversityBeijing 100084China

Radiocesium is frequently present in radioactive wastewater,while its removal is still a challenge due to its small hydrated radius,high diffusion coefficient,and similar chemical behavior to other alkali metal elements with high background *** review summarized and analyzed the recent advances in the removal of Cs+from aqueous solutions,with a particular focus on adsorption and membrane separation *** inorganic,organic,and biological adsorbents have undergone assessments to determine their efficacy in the removal of cesium ***,membrane-based separation techniques,including reverse osmosis,forward osmosis,and membrane distillation,have also shown promise in effectively separating cesium ions from radioactive ***,this review summarized the main approaches,including Kurion/SARRY system+desalination system and advanced liquid processing system,implemented after the Fukushima Daiichi nuclear power plant accident in Japan to remove radionuclides from contaminated *** technology and membrane separation technology play a vital role in treatment of contaminated water.

关键词： Cesium Adsorption Membrane separation Advanced liquid processing system Fukushima nuclear accident

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A novel fractional uplink power control framework for self-organizing networks

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Digital Communications and Networks 2023年第6期9卷 1434-1440页

作者： Zezhou Luo Hongcheng zhuang Wireless Technology Innovation Center Guangdong Communications and Networks InstituteShenzhen510663China School of Electronics and Communication Engineering SUN YAT-SEN UniversityShenzhen518107China

Internet of things and network densification bring significant challenges to uplink *** depending on optimization algorithm enhancements is not enough for uplink *** control intercell interference,Fractional Uplink Power Control(FUPC)should be optimized from network-wide perspective,which has to find a better traffic distribution ***,traffic distribution is geographic-based,and ineffective due to tricky locating *** paper proposes a novel uplink power management framework for Self-Organizing Networks(SON),which firstly builds up pathloss-based traffic distribution model and then makes the decision of FUPC based on the ***-based Traffic Distribution(PLTD)aggregates traffic based on the propagation condition of traffic that is defined as the pathloss between the position generating the traffic and surrounding *** show that the improvement in optimization efficiency of FUPC with PLTD can be up to 40%compared to conventional GeoGraphic-based Traffic Distribution(GGTD).

关键词： 5G and beyond Self-organizing networks Uplink power control Optimization efficiency Traffic distribution

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Break the strength-ductility trade-off in a transformation-induced plasticity high-entropy alloy reinforced with precipitation strengthening

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Journal of Materials Science & Technology 2022年第13期108卷 125-132页

作者： Dong Huang Yanxin zhuang key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang110819China

Transformation-induced plasticity(TRIP)endows material with continuous work hardening ability,which is considered as a powerful weapon to break the strength-ductility ***,FCC based alloys with TRIP effect can not get rid of the“soft”feature of the structure entirely,resulting in insufficient yield ***,a Co_(x)Cr_(25)(AlFeNi)_(75-x) high-entropy alloy is *** phase is used as strengthening component to improve yield strength,while TRIP effect ensures *** with the previous TRIP high-entropy alloy,its yield strength is nearly doubled,and the uniform elongation is more than 55%at room ***,the corresponding multiphase microstructure evolution and deformation mechanisms are ***,stacking faults andΣ3 twin boundaries are confirmed to be the nucleation sites of HCP phase by *** composition design and proper heat treatment process make it a perfect combination of precipitation strengthening and transformationinduced plasticity,and thus guide design in the high-performance alloy.

关键词： High-entropy alloys Transformation-induced plasticity Precipitation strengthening Nucleation site HAADF-STEM

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