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High-performance electronics and optoelectronics of monolayer tungsten diselenide full film from pre-seeding strategy

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InfoMat 2021年第12期3卷 1455-1469页

作者： Shu Zhang Jinbo Pang Qilin Cheng Feng Yang Yu Chen Yu Liu Yufen Li Thomas Gemming Xiaoyan Liu Bergoi Ibarlucea Jiali Yang Hong Liu Weijia Zhou Gianaurelio Cuniberti Mark H.Rümmeli Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinanChina School of Chemistry and Chemical Engineering University of JinanJinanChina Department of Chemistry Southern University of Science and TechnologyShenzhenChina Institute of High Energy Physics Chinese Academy of SciencesBeijingChina College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhouChina Institute for Complex Materials Leibniz Institute for Solid State and Materials Research DresdenDresdenGermany Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresdenGermany Center for Advancing Electronics Dresden Technische Universität DresdenDresdenGermany State Key Laboratory of Crystal Materials Center of Bio&Micro/Nano Functional MaterialsShandong UniversityJinanChina Dresden Center for Computational Materials Science Technische Universität DresdenDresdenGermany Dresden Center for Intelligent Materials(GCL DCIM) Technische Universität DresdenDresdenGermany Centre of Polymer and Carbon Materials Polish Academy of SciencesZabrzePoland Institute for Complex Materials IFW DresdenDresdenGermany Institute of Environmental Technology(CEET) VŠB-Technical University of OstravaOstravaCzech Republi

Tungsten diselenide (WSe2) possesses extraordinary electronic properties forapplications in electronics, optoelectronics, and emerging exciton physics. Thesynthesis of monolayer WSe2 film is of topmost for device arrays and integratedcircuits. The monolayer WSe2 film has yet been reported by thermal chemicalvapor deposition (CVD) approach, and the nucleation mechanism remainsunclear. Here, we report a pre-seeding strategy for finely regulating the nucleidensity at an early stage and achieving a fully covered film after chemicalvapor deposition growth. The underlying mechanism is heterogeneous nucle-ation from the pre-seeding tungsten oxide nanoparticles. At first, we optimized the precursor concentration for pre-seeding. Besides, we confirmed the superi-ority of the pre-seeding method, compared with three types of substrate pre-treatments, including nontreatment, sonication in an organic solvent, andoxygen plasma. Eventually, the high-quality synthetic WSe2 monolayer filmexhibits excellent device performance in field-effect transistors and photodetec-tors. We extracted thermodynamic activation energy from the nucleation andgrowth data. Our results may shed light on the wafer-scale production ofhomogeneous monolayer films of WSe2, other 2D materials, and their van derWaals heterostructures.

关键词： activation energy chemical vapor deposition field-effect transistor pre-seeding thermodynamics tungsten diselenide

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Effect of environmental factors on accumulation of trace metals in a typical shale gas exploitation area: A comprehensive investigation by machine learning and geodetector models

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Chemosphere 2024年 347卷 140724页

作者： Bai, Hongcheng Li, Yan Lu, Peili Li, Yutong Zhang, Lilan Zhang, Daijun Wang, Xing Zhou, Yuxiao School of Architecture and Civil Engineering Chengdu University Sichuan Chengdu610106 China State Key Laboratory of Coal Mine Disaster Dynamics and Control Department of Environmental Science Chongqing University 400045 China College of International Studies Yibin University Sichuan Yibin644000 China School of Food and Biological Engineering Chengdu University Chengdu610106 China Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion and Utilization Technology China

Whether a certain relationship is exist between shale gas exploitation and accumulation of trace metals in soil is a controversial issue in recent years. To date, few study clearly reveal the intrinsic contributions of natural and anthropogenic factors to accumulation of trace metals in soil. In this study, machine learning and geodetector models were integrated to investigate to contribution of environmental factors to variations of trace metals concentration. Before modeling, there are 10.33%–25.87% of soil considered as metal pollution, and the value of Pn further suggest that the Ba contribute the most to the comprehensive pollution index of trace metals in soil. The initial prediction of trace metals concentration by machine learning models is less effectively indicating the need for alternative approaches. To address this problem, post-constraints approach was used, and the post-constraint MSLR model demonstrates superior performance (R2 = 0.81) Additionally, through the utilization of geodetector model, the explanatory power (q) of CEC and SOM were identified as dominant natural factors with value of 0.055 and 0.089. respectively. Moreover, distance from working sites and working status were identified as the dominant anthropogenic factors associating to the spatial heterogeneity of trace metals in soil. The interaction between natural and anthropogenic factors showed a siginifacnt nonlinear enhancement effect on accumulation of Cr, Ba and Sr, and the highest value of q was 0.38 for SOM and distance. This study indicated that the potential metal contamination was related to shale gas exploitation and provide reference for controlling soil pollution in shale gas exploitation area and making management strategy. © 2023 Elsevier Ltd

关键词： Soils

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Universal inverse electrocaloric effect in perovskites

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Physical Review B 2023年第18期107卷 184105-184105页

作者： Xingyue Ma Mingxing Chen Jun-Ming Liu Di Wu Yurong Yang National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China Jiangsu Key Laboratory of Artificial Functional Materials Department of Materials Science and Engineering Nanjing University Nanjing 210093 China School of Physics and Electronics Hunan Normal University Key Laboratory for Matter Microstructure and Function of Hunan Province Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Changsha 410081 People's Republic of China

The electrocaloric effect (ECE) offers a promising alternative to the traditional gas compressing refrigeration due to its high efficiency and environmental friendliness. The unusual inverse (negative) electrocaloric effect refers to the adiabatic temperature drops due to the application of electric field, in contrast with the normal (positive) ECE, and provides ways to reach a larger temperature span in refrigeration cycles by combining the normal and inverse ECE. However, the inverse ECE is unusual and requires a clear understanding of microscopic mechanisms. Here, we found the unexpected and extensive inverse ECE in nonpolar orthorhombic, tetragonal, and cubic phases of halide and oxide perovskite at a wide temperature range by means of first-principle-based large-scale Monte Carlo methods. Such an unexpected inverse ECE originates from the octahedral tilting related entropy change rather than the polarization entropy change under the application of electric field. Furthermore, a giant inverse ECE with temperature change of 8.6 K is found at room temperature. This giant and extensive inverse ECE in perovskite opens up a new horizon in the research of caloric effects and broadens the electrocaloric refrigeration ways with high efficiency.

关键词： Electrocaloric effect Entropy Percolation Perovskites Hybrid Monte Carlo algorithm

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Recent advances in resistive random access memory based on lead halide perovskite

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InfoMat 2021年第3期3卷 293-315页

作者： Jiayu Di Jianhui Du Zhenhua Lin Shengzhong(Frank)Liu Jianyong Ouyang Jingjing Chang State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian UniversityXi'anChina Advanced Interdisciplinary Research Center for Flexible Electronics Xidian UniversityXi'anChina Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal UniversityXi'anChina Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore

Lead halide perovskites have attracted increasing attention in photovoltaic devices,light-emitting diodes,photodetectors,and other fields due to their excellent *** optoelectronic devices,growing numbers of studies have focused on the perovskite-based electrical devices in the past few years,such as transistors and resistive random access memories(RRAMs).Here,this article summarizes the recent progress the researchers have made of RRAM ***,the working mechanism and the key parameters of RRAM are ***,the working principles,including the conductive filament model(containing the types of the model of the metal cationsinduced filament and the model of the ions migration in bulk),the interface effect,and the electronic effect are the origins of the RRAM behaviors,and hence,various factors that affect the device performance are ***,RRAMs based on organolead halide perovskite and all-inorganic perovskite are discussed in terms of different structures,different compositions,and different fabrication ***,a brief conclusion and a broad outlook are given on the progress and challenges in the field of perovskite-based RRAMs.

关键词： all-inorganic perovskites conductive filament models organolead halide perovskites resistive random access memories resistive switching

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Combining magnetocaloric and elastocaloric effects in a Ni45Co5Mn37In13 alloy

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Journal of materials science & Technology 2021年第35期94卷 47-52页

作者： Pengtao Cheng Zhenjia Zhou Jiaxing Chen Zongbin Li Bo Yang Kun Xu Zhe Li Jun Li Zhengming Zhang Dunhui Wang Suxin Qian Youwei Du National Laboratory of Solid State Microstructures and Department of Physics Nanjing UniversityNanjing 210093China Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing UniversityNanjing 210093China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang 110819China Center for Magnetic Materials and Devices Key Laboratory for Advanced Functional and Low Dimensional Materials of Yunnan Higher Education Institute Qujing Normal UniversityQujing 655011China School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China Department of Refrigeration and Cryogenic Engineering Xi'an Jiaotong UniversityXi'an 710049China

*** Refrigeration plays an essential role in nowadays ***,conventional refrigeration based on vapor compression cooling shows high energy consumption,complicated structure and even environmental *** for an environmentalfriendly and energy-saving refrigeration technology has become a matter of concern[1,2].In the past few decades,the solid-state refrigeration technologies mainly represented by magnetocaloric effect(MCE),electrocaloric effect(ECE)and elastocaloric effect(e CE)have been regarded as promising candidate to replace traditional vapor compression refrigeration technology owing to environmental friendliness and high efficiency[1-9].

关键词： alloy effect replace

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Improved crystallinity and self-healing effects in perovskite solar cells via functional incorporation of polyvinylpyrrolidone

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Journal of Energy Chemistry 2022年第5期31卷 12-18页

作者： Yunjuan Niu Dingchao He Zhengguo Zhang Jun Zhu Tulloch Gavin Polycarpos Falaras Linhua Hu Key Laboratory of Photovoltaic and Energy Conservation Materials Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031AnhuiChina University of Science and Technology of China Hefei 230026AnhuiChina School of Chemistry and Chemical Engineering North Minzu UniversityYinchuan 750021NingxiaChina Special Display and Imaging Technology Innovation Center of Anhui Province Anhui Province Key Laboratory of Measuring Theory and Precision InstrumentAcademy of Opto-Electric TechnologyHefei University of TechnologyHefei 230009AnhuiChina National Center for Scientific Research‘‘Demokritos” Institute of Nanoscience and Nanotechnology(INN)15310 Agia Paraskevi AttikisAthensGreece Greatcell Energy 280 Byrnes RdWagga WaggaNSW 2650Australia

Air moisture is the key issue for perovskites which invades the films and accelerates the damage of devices. Here, polyvinylpyrrolidone(PVP) is introduced to the methylammonium lead iodide(MAPbI_(3)) perovskite precursor to control crystal growth and endow the devices with self-healing ability in a moisture environment. The strong C=O...ΗAΝ hydrogen bonding interactions between PVP and MAPbI_(3) was confirmed by nuclear magnetic resonance measurements. By introducing hydrogen bonding in the MAPbI_(3)-based PSCs, we form a compact perovskite film of excellent electronic quality with a power conversion efficiency(PCE) of up to 20.32%. Furthermore, the O...ΗAΝ hydrogen bonding interactions at the grain boundaries suppress the decomposition of methylammonium cations and improve the recyclable dissolution–recrystallization of perovskite. As a result, the MAPbI_(3)-PVP based cells exhibited striking moisture stability and self-healing behavior, with negligible decay in efficiency after 500 h of operation in high humidity(65% ± 5% relative humidity) and rapid recovering ability after their removal from the humid environment.

关键词： Perovskite solar cells Self-healing Carbonyl groups Hydrogen bonding

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Reversible potassium storage in ultrafine CF_(x): A superior cathode material for potassium batteries and its mechanism

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Journal of Energy Chemistry 2021年第2期30卷 347-353,I0012页

作者： Hongjun Yue Huixin Chen Chen Zhao Zhiming Zheng Ke Zhou Qjaobao Zhang Guiming Zhong Can-Zhong Lu Yong Yang CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina Xiamen Institute of Rare Earth Materials Haixi Institutes.Chinese Academy of SciencesXiamen 361021Fujian.China College of Chemistry Fuzhou University.Fuzhou 350108FujianChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina State Key Lab of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials and Department of ChemistryXiamen UniversityXiamen 361005FujianChina

Current studies of cathodes for potassium batteries(PBs) mainly focus on the intercalation-type *** conversion-type materials that possess much higher theoretical capacities are rarely discussed in previous *** this work,carbon fluoride(CF_x) is reported as a high capacity conversion-type cathode for PBs for the first *** material delivers a remarkable discharge capacity of>250 mAh g^(-1) with mid-voltage of 2.6 V at 20 mA g^(-1).Moreover,a highly reversible capacity of around 95 mAh g^(-1) is achieved at 125 mA g^(-1) and maintained for 900 cycles,demonstrating its excellent cycling *** mechanism of this highly reversible conversion reaction is further investigated by nuclear magnetic resonance spectra,X-ray diffraction,and transmission electron microscopy *** to the analyses,the C-F bond in the cycled material is different from that in the pristine state,which presents relatively higher *** finding offers important insights for further improving the performance of the CF_*** work not only demonstrates the CF_x as a high performance cathode for PBs,but also paves a new avenue of exploring conversion-type cathodes for high energy density PBs.

关键词： Potassium batteries Carbon fluoride NMR spectroscopy Conversion reaction Cathode

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Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

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ACS Nano 2023年第12期17卷 11087-11219页

作者： Choi, Dongwhi Lee, Younghoon Lin, Zong-Hong Cho, Sumin Kim, Miso Ao, Chi Kit Soh, Siowling Sohn, Changwan Jeong, Chang Kyu Lee, Jeongwan Lee, Minbaek Lee, Seungah Ryu, Jungho Parashar, Parag Cho, Yujang Ahn, Jaewan Kim, Il-Doo Jiang, Feng Lee, Pooi See Khandelwal, Gaurav Kim, Sang-Jae Kim, Hyun Soo Song, Hyun-Cheol Kim, Minje Nah, Junghyo Kim, Wook Menge, Habtamu Gebeyehu Park, Yong Tae Xu, Wei Hao, Jianhua Park, Hyosik Lee, Ju-Hyuck Lee, Dong-Min Kim, Sang-Woo Park, Ji Young Zhang, Haixia Zi, Yunlong Guo, Ru Cheng, Jia Yang, Ze Xie, Yannan Lee, Sangmin Chung, Jihoon Oh, Il-Kwon Kim, Ji-Seok Cheng, Tinghai Gao, Qi Cheng, Gang Gu, Guangqin Shim, Minseob Jung, Jeehoon Yun, Changwoo Zhang, Chi Liu, Guoxu Chen, Yufeng Kim, Suhan Chen, Xiangyu Hu, Jun Pu, Xiong Guo, Zi Hao Wang, Xudong Chen, Jun Xiao, Xiao Xie, Xing Jarin, Mourin Zhang, Hulin Lai, Ying-Chih He, Tianyiyi Kim, Hakjeong Park, Inkyu Ahn, Junseong Huynh, Nghia Dinh Yang, Ya Wang, Zhong Lin Baik, Jeong Min Choi, Dukhyun Kyung Hee University Gyeonggi Yongin17104 Korea Republic of Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States Department of Mechanical Engineering Soft Robotics Research Center Seoul National University Seoul08826 Korea Republic of Department of Mechanical Engineering Gachon University Seongnam13120 Korea Republic of Department of Biomedical Engineering National Taiwan University Taipei10617 Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan School of Advanced Materials Science & Engineering Sungkyunkwan University Suwon16419 Korea Republic of Sungkyunkwan University 2066 Seobu-ro Gyeonggi Suwon16419 Korea Republic of Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 117585 Singapore Division of Advanced Materials Engineering Jeonbuk National University 567 Baekje-daero Jeonbuk Jeonju54896 Korea Republic of Jeonbuk National University 567 Baekje-daero Jeonbuk Jeonju54896 Korea Republic of Department of Physics Inha University 100 Inha-ro Incheon22212 Korea Republic of School of Materials Science & Engineering Yeungnam University Gyeongbuk Gyeongsan38541 Korea Republic of 291 Daehak-ro Daejeon34141 Korea Republic of School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore Institute of Flexible Electronics Technology of Tsinghua Zhejiang Jiaxing314000 China Nanomaterials and System Lab Major of Mechatronics Engineering Faculty of Applied Energy System Jeju National University Jeju632-43 Korea Republic of School of Engineering University of Glasgow GlasgowG128QQ United Kingdom Seoul02792 Korea Republic of Department of Physics Inha University Incheon22212 Korea Republic of Suwon16419 Korea Republic of Department of

Serious climate changes and energy-related environmental problems are currently critical issues in the world. In order to reduce carbon emissions and save our environment, renewable energy harvesting technologies will serve as a key solution in the near future. Among them, triboelectric nanogenerators (TENGs), which is one of the most promising mechanical energy harvesters by means of contact electrification phenomenon, are explosively developing due to abundant wasting mechanical energy sources and a number of superior advantages in a wide availability and selection of materials, relatively simple device configurations, and low-cost processing. Significant experimental and theoretical efforts have been achieved toward understanding fundamental behaviors and a wide range of demonstrations since its report in 2012. As a result, considerable technological advancement has been exhibited and it advances the timeline of achievement in the proposed roadmap. Now, the technology has reached the stage of prototype development with verification of performance beyond the lab scale environment toward its commercialization. In this review, distinguished authors in the world worked together to summarize the state of the art in theory, materials, devices, systems, circuits, and applications in TENG fields. The great research achievements of researchers in this field around the world over the past decade are expected to play a major role in coming to fruition of unexpectedly accelerated technological advances over the next decade. © 2023 The Authors. Published by American Chemical Society

关键词： Nanogenerators

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engineering the future: Unveiling novel paths in heavy metal wastewater remediation with advanced carbon-based nanomaterials – Beyond performance comparison, tackling challenges, and exploring opportunities

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Chemosphere 2024年 366卷 143477页

作者： Song, Yaran Liu, Zhanqi Zhang, Qingrui State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse Hebei Key Laboratory of Applied Chemistry Hebei Key Laboratory of Nano-biotechnology Yanshan University Qinhuangdao066004 China Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste Yanshan University Qinhuangdao066004 China

This review addresses the pressing issue of heavy metal pollution in water, specifically focusing on the application of adsorption technology utilizing carbon materials such as biochar, carbon nanotubes, graphene, and carbon quantum dots. Utilizing bibliometric analysis with VOSviewer based on Web of science core dataset, this study identifies research hotspots related to carbon-based materials in heavy metal applications over the past decade. However, existing literature still lacks sufficient comparative analysis of the potential of carbon-based materials' structural characteristics and inherent advantages in heavy metal applications. This review strategically addresses this gap, offering a comprehensive comparative analysis of these four materials from an engineering application perspective. It offers a thorough evaluation of their suitability for various water treatment applications, providing a detailed examination of their advantages and limitations in heavy metal application. Additionally, the review provides insights into performance comparisons, addresses challenges, and explores emerging opportunities in this field. Insights into potential application fields based on structural characteristics and inherent advantages are presented. This unique focus on a comprehensive comparative analysis distinguishes the article, offering a nuanced perspective on the strengths and future possibilities of carbon materials in tackling the global challenge of heavy metal pollution in water. © 2024

关键词： Yarn

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Surpassing the classical limit of the microwave photonic frequency fading effect by quantum microwave photonics

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Photonics research 2023年第6期11卷 1094-1104页

作者： YAQING JIN YE YANG HUIBO HONG XIAO XIANG RUN'AI QUAN TAO LIU NINGHUA ZHU MING LI SHOUGANG ZHANG RUIFANG DONG Key Laboratory of Time and Frequency Primary Standards National Time Service CenterChinese Academy of SciencesXi’an 710600China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China The 29th Research Institute of China Electronics Technology Group Corporation Chengdu 610029China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100190China

With energy-time entangled biphoton sources as the optical carrier and time-correlated single-photon detection for high-speed radio frequency(RF)signal recovery,the method of quantum microwave photonics(QMWP)has presented the unprecedented potential of nonlocal RF signal encoding and efficient RF signal distilling from the dispersion interference associated with ultrashort pulse *** this paper,its capability in microwave signal processing and prospective superiority are further *** QMWP RF phase shifting and transversal filtering functionality,which are the fundamental building blocks of microwave signal processing,are *** good immunity to the dispersion-induced frequency fading effect associated with the broadband carrier in classical MWP,a native two-dimensional parallel microwave signal processor is *** results well demonstrate the superiority of QMWP over classical MWP and open the door to new application fields of MWP involving encrypted processing.

关键词： microwave quantum dispersion

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