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Precision Chemistry 2024年第7期2卷 282-299页

作者： Dingyi Shen Yejun Jin Zucheng Zhang Rong Song Miaomiao Liu Wei Li Xin Li Ruixia Wu Bo Li Jia Li Bei Zhao Xidong Duan Hunan Key Laboratory of Two-Dimensional Materials State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan University410082 ChangshaChina Key Laboratory of Quantum Materials and Devices of Ministry of Education School of PhysicsSoutheast UniversityNanjing 211189China Key Laboratory of Two-Dimensional Materials State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan University410082 ChangshaChina

Two-dimensional(2D)transition metal dichalcogenides(TMDs)have garnered widespread interest in the scientific community and industry for their exceptional physical and chemistry properties,and great potential for applications in diverse fields including(opto)electronics,electrocatalysis,and energy storage.Chemical vapor deposition(CVD)is one of the most compelling growth methods for the scalable growth of high-quality 2D TMDs.However,the conventional CVD process for synthesis of 2D TMDs still encounters significant challenges,primarily attributed to the high melting point of precursor powders,and achieving a uniform distribution of precursor atmosphere on the substrate to obtain controllable smaple domains is difficult.The spin-coating precursor mediated chemical vapor deposition(SCVD)strategy provides refinement over traditional methods by eliminating the use of solid precursors and ensuring a more clean and uniform distribution of the growth material on the substrate.Additionally,the SCVD process allows fine-tuning of material thickness and purity by manipulating solution composition,concentration,and the spin coating process.This Review presents a comprehensive summary of recent advances in controllable growth of 2D TMDs with a SCVD strategy.First,a series of various liquid precursors,additives,source supply methods,and substrate engineering strategies for preparing atomically thin TMDs by SCVD are introduced.Then,2D TMDs heterostructures and novel doped TMDs fabricated through the SCVD method are discussed.Finally,the current challenges and perspectives to synthesize 2D TMDs using SCVD are discussed.

关键词： spin-coating Chemical vapor deposition Liquid precursor Substrate Two-dimensional materials Heterostructure Doping Film

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Plasma-etching on monolithic MOFs-based MIM filter boosted chemical sensing

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Nano Research 2024年第4期17卷 2800-2807页

作者： Jianxi Liu Li Feng Zhihuan Li Yang Wu Feng Zhou Yadong Xu Research&Development Institute Northwestern Polytechnical University in ShenzhenShenzhen 518057China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering Shandong Laboratory of Advanced Materials and Green Manufacturing at YantaiYantai 264006China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Metal-insulator-metal(MIM)cavity as a lithography-free structure to control light transmission and reflection has great potential in the field of optical sensing.However,the dense top metal layer of the MIM prohibits any external medium from entering the dielectric insulation layer,which limits the application of the cavity in the sensing field.Herein,we demonstrate a series of monolithic metal-organic frameworks(MOFs)based MIM cavities,which are treated by plasma etching to provide channels for chemical diffusion and to advance sensing.We modulate the bandwidth of the MIM filters by controlling the MOF thickness as insulator layers.Oxygen plasma-etching is applied to build channels on the top metal layer without altering their saturation and brightness for chemical sensing performance.The etching time regulates the number and size of channels on the top metal layer.Sensing behavior is demonstrated on the plasma-etched MOFs-based MIM cavity when external chemicals diffuse in the cavity.In addition,we generate patterned structure of the MOFs-based MIM cavity via plasma-mask method,which can transfer to different substrates and produce a controllable structure color change for chemical sensing.Our MIM cavity may promote the advancement and applications of structural color in security imaging,color display,information anticounterfeiting,and color printing.

关键词： metal-organic frameworks(MOFs) spin-coating metal-insulator-metal filter patterns sensing

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Synthesis and thermal behavior of [Li(thf)3(μ-Cl)La{N(SiMe3)2}3] and its investigation as spin-coating precursor for lanthanum-based layer formation

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Journal of Rare Earths 2018年第5期36卷 537-543页

作者： Andrea PreuB Elaheh Pousaneh Julian Noll Tobias Rüffer Alexaner Jakob Lutz Mertens Michael Mehring Heinrich Lang Technische Universitat Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany Technische Universitat Chemnitz Faculty of Natural Sciences Institute of Chemistry Coordination Chemistry 09107 Chemnitz Germany

The lanthanum（Ⅲ） complex [Li（thf）3（μ-CI）La{N（SiMe3）2}3]（3） was obtained by the reaction of LaCl3 with three equiv of Li[N（SiMe3）2]3 in a tetrahydrofuran solution. The molecular structure of 3 in the solid state was characterized by a tetracoordinated anionic lanthanide（Ⅲ） amide in form of an adduct with LiCl（thf）3 as evidenced by single crystal X-ray structure analysis. In order to study the suitability of 3 as a precursor for the deposition of La2O3/LiLaSiO4 by thin layer deposition techniques,its thermal behavior was investigated by thermogravimetry（TG） and TG-MS-coupled studies. TG studies show a two-step decomposition process, whereby volatile decomposition products can be detected during the second decomposition step. TG measurements under an atmosphere of oxygen produced La2O3, Calcination processes of 3 under ambient atmosphere for 10 h at 1000 ℃ gave La2O3 and LiLaSiO4,which was confirmed by PXRD studies. Metal-organic 3 was applied as spin-coating precursor for La2O3 thin film formation giving the as-deposited layers nearly crack-free.

关键词： Lanthanum Amide Thermogravimetry Solid state structure spin-coating Rare earths

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[Y(dbm)_(3)(H_(2)O)]:Synthesis,thermal behavior and spin-coating precursor for Y_(2)O_(3)layer formation

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Journal of Rare Earths 2017年第12期35卷 1248-1254页

作者： Elaheh Pousaneh Andrea Preuβ Khaybar Assim Julian Noll Alexander Jakob Tobias Rüffer Heinrich Lang Technische Universitat Chemnitz Faculty of Natural SciencesInstitute of ChemistryInorganic Chemistry

The synthesis,structure and thermal behavior of [Y（dbm）3（H2 O）]（3）（dbm = 1,3-diphenyl-1,3-propandionate） and its use as a spin-coating precursor for Y2 O3 deposition is reported. Complex 3 was prepared by the reaction of [Y（NO3）3·6 H2 O]（1） with 3 equiv of Hdbm（2） in presence of NaOH. The molecular structure of 3 in the solid-state was determined by single X-ray crystal diffraction. Both C1 symmetric crystallographically independent species of 3 possess a YO7 coordination setup with minor deviation from an ideal capped octahedron coordination geometry（∧ enantiomer）. Complex 3 forms a1 D chain, due to intermolecular hydrogen bonds between the coordinated H2 O molecule and the 0 atom of the dbm ligand, respectively. The thermal decomposition behavior of 3 was investigated by thermogravimetric studies in the temperature range of 40-800 ℃ and 40-1300 ℃ under an oxygen and argon atmosphere, respectively. Powder X-ray diffraction（PXRD） measurements of the residues confirmed the formation of Y2 O3. Complex 3 was applied as a spin-coating precursor for yttrium oxide film formation on either Si wafers with a continuous 100 nm thick SiO2 film, or with a native oxide layer.The as-deposited Y2 O3 layers are smooth, conformal, dense and transparent and are of a thickness of 27 and 30 nm, respectively.

关键词： Yttrium β-Diketonate Yttrium oxide spin-coating Solid-state structure Vapor pressure

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CORRELATION OF SiOx LAYER THICKNESS AND PROPERTIES OF BOPP/SiOx COMPOSITE FILMS WITH spin coating PROCESS PARAMETERS

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Chinese Journal of Polymer Science 2013年第2期31卷 333-345页

作者： Xiao-li Yao 马育红 Chang-wen Zhao 杨万泰 Key Laboratory of Carbon Fiber and Functional Polymers Ministry of EducationBeijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology

The effects of the spin coating process parameters on the thickness of the SiOx layer of the BOPP/SiOx composite film were investigated. When the concentration of tetraethoxysilane （TEOS） increased from 12.5 vol% to 55% vol%, the SiOx thickness increased from about 80 nm to 470 nm. In the sol time range of 1.5 h to 5 h the SiOx layer thickness reached a maximum at about 4 h and the change of the thickness roughly matched the change of the silica colloidal sphere sizes in sol. When the spin-coating speed of the dispensing stage increased from 450 r/min to 500 r/min, the SiOx layer thickness drastically decreased from about 1.67 gm to 400 nm. While the spin-coating speed of the thinning and drying stage went up to 1200 r/min, the SiOx layer thickness was in the range of 330 nm to 390 nm. It was also found that the SiOx layer thickness was almost increased linearly from about 500 nm to 1.02 gm with the ratio of the commercial silica colloidal to the TEOS from 0.2 to 1.0. The water contact angles decreased to about 23.0° for the BOPP/Si-Sol composite film with 1.67 μm SiOx layer and about 4.0° for the BOPP/mixing Si-Sol composite film with 1.02 μm SiOx layer. Compared to BOPP, the light transparency of the BOPP/Si-Sol composite films decreased by about 5.5% with the SiOx layer from about 80 nm to 1.67 μm and by 7.0% for the BOPP/mixing Si-Sol composite film with the SiOx layer from about 350 nm to 1.02 μm respectively.

关键词： Composites Polypropylene Silicas spin-coating Hydrophilicity.

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A novel method to prepare metal oxide electrode:spin-coating with thermal decomposition

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Chinese Chemical Letters 2011年第3期22卷 354-357页

作者： Hao Xu Wei Yan Cheng Li Tang Department of Environmental Science and Technology Xi'an Jiaotong University Xi'an 710049 China

In this work,we propose a new spin-coating method coupling with high thermal decomposition,to prepare the tin-antimony（Sn-Sb） oxide electrode.The character of the spin-coating electrode was compared with the dip-coating electrode through X-ray diffraction（XRD）,scanning electron microscopy（SEM）,accelerated life test,cyclic voltammetry,and electrolytic degradability. The results showed that the spin-coating electrode had a better defined crystal form,a smoother and more compact surface than that of the dip-coating electrode.Service time of the spin-coating electrode was determined to be longer than 15 h,and it was less than 2 min for the dip-coating electrode.Electrochemical characterization analysis showed that the electrolytic degradability of the spin-coating electrode is better than that of the dip-coating electrode.

关键词： spin-coating Dip-coating Thermal decomposition Electro properties

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Increasing Dye-Sensitized Solar Cell Efficiency by ZnO spin-coating of the TiO<sub>2</sub>Electrode: Effect of ZnO Amount

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Energy and Power Engineering 2013年第10期5卷 591-595页

作者： Fahd Al-Juaid Amar Merazga Physics Department Faculty of Science Taif University Taif Saudi Arabia

This paper is concerned with the improvement of dye-sensitized solar cell (DSSC) efficiency upon ZnO-coating of the TiO2 electrode. Sol-gel ZnO of controlled amount by varying the number of sol drops during spin-coating is shown to increase the DSSC efficiency. The highest efficiency is obtained at a single sol drop with enhancement of 40%, while beyond this amount the efficiency falls down sharply to zero. Based on measured optical absorption spectra of the different dye-loaded electrodes, it is concluded that this amount of ZnO sol corresponds to the thinnest layer that can create the energy barrier to minimize the electron recombination rate without seriously affecting the dye adsorption efficiency of the TiO2 film.

关键词： ZnO spin-coating Dye-Sensitized Solar Cell Efficiency

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ZnO spin-coating of TiO<sub>2</sub>Photo-Electrodes to Enhance the Efficiency of Associated Dye-Sensitized Solar Cells

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World Journal of Condensed Matter Physics 2012年第4期2卷 192-196页

作者： Fahd Al-Juaid Amar Merazga Fouad Abdel-Wahab Mohamed Al-Amoudi Department of Chemistry Taif University Taif KSA Department of Physics Taif University Taif KSA

Dye-sensitized solar cells (DSSCs) with ZnO spin-coated TiO2 photo-electrodes are compared to DSSC with a bare TiO2 photo-electrode. It is demonstrated that the deposited ZnO of controlled amount, by varying the precursor concentration in the coating sol, can indeed enhance the performance of the DSSC. The measured power conversion efficiency shows a maximum around the precursor concentration 0.1 M and falls down sharply to 0% beyond this point. The results are interpreted on the basis of two competing factors: At ZnO concentrations less than 0.1 M, the formation of an energy barrier increases the photocurrent by reducing the rate of interfacial back-recombination. At ZnO concentrations greater than 0.1 M, the screening of the TiO2 film by thicker ZnO layers decreases the photocurrent through the reduction of TiO2 dye-adsorption efficiency.

关键词： TiO2 Photo-Electrodes ZnO Sol-Gel spin-coating Dye-Sensitized Solar Cells Power Conversion Efficiency

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Preparation of Cu(In,Ga)Se2 Thin Film by Solvothermal and spin-coating Process

Preparation of Cu(In,Ga)Se2 Thin Film by Solvothermal and Sp...

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2012 International Conference on Future Energy, Environment, and Materials(FEEM 2012)

作者： Ying Liu Deyi Kong Jiawei Li Cong Zhao Chilai Chen Juergen Brugger State Key Laboratory of Transducer Technology Hefei Institute of Intelligent Machines Chinese Academy of Sciences Department of Chemistry University of Science and Technology of China EPFL

A low-cost and non-vacuum process by solvothermal method, spin-coating route and selenization process was demonstrated for fabrication of Cu(In,Ga)Se(CIGS) thin films. Firstly, the CIGS precursor nanoparticles were synthesized by solvothermal method. Subsequently, the CIGS films were synthesized via spin-coating and then selenization process. The obtained samples were systematically characterized by X-ray diffraction(XRD), Raman spectroscopy(RS) and Scanning electron microscopy(SEM). The phases of the CIGS precursor nanoparticles and films are typical chalcopyrite structure. The CIGS film structure is little distorted and considerably improved by postselenization.

关键词： CIGS solvothermal method spin-coating selenization

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A facile,scalable,high stability Lithium metal anode

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SusMat 2022年第1期2卷 104-112页

作者： Qiang Zhao Xin Chen Wang Hou Beirong Ye Yongqi Zhang Xinhui Xia Jinshu Wang School of Materials and Energy University of Electronic Science and Technology of ChinaChengduP.R.China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhouP.R.China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduSichuanP.R.China State Key Lab of Silicon Materials Zhejiang UniversityHangzhouP.R.China

Li has garnered enormous attention for next-generation Limetal batteries owing to its remarkable theoretical capacity.Unfortunately,as an anode,Li suffers from serious safety issues and fast capacity fading due to the formation of Li dendrites,which hinders the practical application of Li anode.Herein,a LiAlO_(2)-PVDF composite modification layer is fabricated on the surface of Li metal to enhance its stability and electrochemical performance.Benefitting fromthe synergetic effects of high Li+conductivity,high Li+transference number,excellent mechanical properties,superior chemical durability,and compactness of the modification layer,the LiAlO_(2)-PVDF@Li electrode delivers an ultra-long lifespan and a high capacity retention rate in the LiAlO2-PVDF@Li│LiFePO_(4) full cell.The proposed strategy provides a new alternative anode for Li metal batteries with high performance and scalable production.

关键词： Artificial modification layer Li metal anode LiAlO2-PVDF spin-coating

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