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Influence of the cobalt concentration on optical and magnetic properties of zinc ox.de

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Chinese Science Bulletin 2010年第10期55卷 897-901页

作者： WANG LiWei,zhang FuJun,x. Zheng,ZHAO SuLing & LU LiFang Institute of Optoelectronics Technology,Beijing Jiaotong University key laboratory of luminescence and optical information (Beijing Jiaotong University),Ministry of Education,Beijing 100044,China Institute of Optoelectronics Technology Beijing Jiaotong University Beijing China Ministry of Education Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University) Beijing China

A series of Co-doped ZnO thin films have been prepared by direct current reactive magnetron sputtering on glass *** structural characterization by means of x.ray diffraction (x.D) and scanning electron microscopy (SEM) gave no evidence of second phase *** q.alitative composition and chemical state were characterized by energy dispersive x.ray spectroscopy (EDS) and x.ray photoelectronic spectrometry (x.S),*** results confirmed that Co was incorporated as Co3+,occupying the Zn2+ sites in ZnO's wurtzite *** luminescence properties of the films were investigated by room temperature photoluminescence,and the optical properties were studied by optical *** magnetic analysis was carried out at room temperature and at 50 K by q.antum Design MPMS (Sq.ID) *** results showed that all the Co-doped ZnO thin films prepared by direct current magnetron sputtering were not ferromagnetic above 50 K.

关键词：氧化锌钴氧化物磁性直流反应磁控溅射 x.线光电子能谱室温光致发光扫描电子显微镜纤锌矿结构

TiS2-based saturable absorber for ultrafast fiber lasers

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Photonics Research 2018年第10期6卷 I0046-I0050页

作者： x. ZHU S. CHEN M. zhang L. CHEN q. Wu J. ZHAO q.JIANG Z．ZHENG H．zhang School of Electronic and information Engineering Beihang University Beijing 100191 China Department of Optoelectronics Engineering Shenzhen University Shenzhen 518060 China College of Health Science and Environmental Engineering Shenzhen Technology University Shenzhen 518118 China College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China

We fabricate titanium disulfide(TiS2) using a liq.id ex.oliation method and subseq.ently a TiS2-based device by optically depositing the TiS2 material onto the microfiber. This device ex.ibits a strong nonlinear saturable absorption property with an optical modulation depth of 8.3% at 1560 nm. With the implementation of this all-fiber TiS2-based saturable absorber, we demonstrate that both mode-locking and q.switching operation can be obtained in a turn-key all-fiber erbium-doped laser cavity. Our findings constitute the first ex.mple, to the best of our knowledge, of a TiS2-based saturable absorber for ultrashort pulse generation and highlight the great potential of such devices in two-dimensional nanomaterials-related photonics.

关键词：液体剥离方法激光器通讯技术发展现状

luminescence properties and optical sensing behaviors of Sr_(2)GdSbO_(6):Eu^(3+) phosphors

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Journal of Rare Earths 2024年第8期42卷 1458-1469,I0002页

作者： Youfa Tai Ruirui Cui Jun zhang Chunkai Wang Tingyu Zhao Beiq.ao zhang Chaoyong Deng key laboratory of Functional Composite Materials of Guizhou Province College of Big Data and Information EngineeringGuizhou UniversityGuiyang550025China College of Computer and information Engineering Guizhou University of CommerceGuiyang550014China School of Electronics and information Engineering Guiyang UniversityGuiyang550005China

Novel orange-red Sr_(2)GdSbO_(6):x.u^(3+)(x.0,0.05,0.1,0.2,0.3,0.4,0.5 and 0.6) phospho rs were successfully prepared by the traditional high-temperature solid-state *** results of Rietveld refinement,energy dispersive spectroscopy(EDS) spectrum and elemental mapping demonstrate that Eu^(3+) successfully replaces the Gd^(3+) sites and distributes uniformly in the particles of *** luminescence properties of Sr_(2)GdSbO_(6):Eu_(3+)phosphors were investigated in *** emission spectra of the strongest emission peak is the ^(5)D_(0)→^(7)F_(1)(593 nm) transition,which can emit orange-red light under393 nm *** the doping concentration of Eu3+ions is x.0.2,the luminescence intensity of the phosphors reaches the *** detailed mechanism of concentration q.enching is attributed to dipole-dipole *** thermal stability values of Sr_(2)GdSbO_(6):0.2Eu^(3+) phosphors are 87%,82% and114% under 393,467 and 527 nm ex.itations,*** causes of the abnormal thermal q.enching under 527 nm ex.itation were *** on the abnormal thermal q.enching under527 nm ex.itation,the optical thermometry properties of Sr_(2)GdSbO_(6):0.2Eu^(3+)phosphors were investigated by fluorescence intensity ratio(FIR) techniq.e,and appreciable relative sensitivity was *** results suggest that Sr_(2)GdSbO_(6):0.2Eu^(3+)phosphors can be potentially applied to w-LEDs and optical thermometers.

关键词： Sr_(2)GdSbO_(6):Eu^(3+) Phosphors luminescence properties Abnormal thermal q.enching Rare earths

Ground-based and additional science support for SMILE

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Earth and Planetary Physics 2024年第1期8卷 275-298页

作者： J.A.Carter M.Dunlop C.Forsyth K.Oksavik E.Donovon A.Kavanagh S.E.Milan T.Sergienko R.C.Fear D.G.Sibeck M.Connors T.Yeoman x.Tan M.G.G.T.Taylor K.McWilliams J.Gjerloev R.Barnes D.D.Billet G.Chisham A.Dimmock M.P.Freeman D.-S.Han M.D.Hartinger S.-Y.W.Hsieh Z.-J.Hu M.K.James L.Juusola K.Kauristie E.A.Kronberg M.Lester J.Manuel J.Matzka I.McCrea Y.Miyoshi J.Rae L.Ren F.Sigernes E.Spanswick K.Sterne A.Steuwer T.Sun M.-T.Walach B.Walsh C.Wang J.Weygand J.Wild J.Yan J.zhang q.-H.zhang Planetary Sciences Group School of Physics and AstronomyUniversity of LeicesterUniversity RoadLeicesterLE17RHUK Rutherford Appleton laboratory Space Science Technology Facilities CouncilOxfordshireUK School of Space and Environment Beihang UniversityBeijing 100191China key laboratory of Space Environment Monitoring and information Processing Ministry of Industry and Information TechnologyBeijing 100017China Department of Space and Climate Physics UCLMullard Space Science LaboratoryHolmbury St.MaryDorkingSurreyRH56NTUK Birkeland Centre for Space Science Department of Physics and Technology.University of BergenBergenNorway Department of Physics and Astronomy University of Calgary2500 University DriveCalgaryAlbertaCanada T2N 1N4 British Antarctic Survey CambridgeUK Swedish Institute of Space Physics KirunaSweden West Highfield Campus University of SouthamptonUniversity RoadSO171BJUK Goddard Space Flight Center NASAGreenbeltMarylandUSA Athabasca University AthabascaCanada ESTEC European Space AgencyNetherlands University of Saskatchewan SaskatoonCanada The Johns Hopkins University Applied Physics laboratory LaurelMarylandUSA Swedish Institude of Space Physics UppsalaSE 75121Sweden Tongji University Shanghai 200092China Center for Space Plasma Physics Space Science Institute4765 Walnut Street Suite BBoulderColorado80301USA Polar Research Institute of China Shanghai 200136China Finnish Meteorological Institute(FMI) Finland Department of Earth and Environmental Sciences(Geophysics) Ludwig Maximilian University of Munich(LMU)MunichTheresienstr.41MunichD-80333Germany Canadian Space Agency MontrealCanada GFZ German Research Centre for Geosciences PotsdamGermany Nagoya University Institute for Space Earth Environment ResearchCenter for Integrated Data ScienceNagoyaAichiJP 464-8601 Northumbria University Newcastle upon TyneTyne and WearUK NE18ST National Space Science Center Chinese Academy SciencesBeijing 100190China Arctic Geophysics University Centre in Svalbard

The joint European Space Agency and Chinese Academy of Sciences Solar wind Magnetosphere Ionosphere Link Ex.lorer(SMILE)mission will ex.lore global dynamics of the magnetosphere under varying solar wind and interplanetary magnetic field conditions,and simultaneously monitor the auroral response of the Northern Hemisphere *** these large-scale responses with medium and fine-scale measurements at a variety of cadences by additional ground-based and space-based instruments will enable a much greater scientific impact beyond the original goals of the SMILE ***,we describe current community efforts to prepare for SMILE,and the benefits and contex. various ex.eriments that have ex.licitly ex.ressed support for SMILE can offer.A dedicated group of international scientists representing many different ex.eriment types and geographical locations,the Ground-based and Additional Science Working Group,is facilitating these *** include constructing an online SMILE Data Fusion Facility,the discussion of particular or special modes for ex.eriments such as coherent and incoherent scatter radar,and the consideration of particular observing strategies and spacecraft *** anticipate growing interest and community engagement with the SMILE mission,and we welcome novel ideas and insights from the solar-terrestrial community.

关键词： magnetosphere ionosphere magnetosphere-ionosphere coupling ground-based ex.erimentation SMILE conjunctions missions

Discoticnematic Triphenylene Derivertives and their Application to an optically Anisotropic Film

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Discoticnematic Triphenylene Derivertives and their Applicat...

Fifth International Conference on Surface Engineering

作者： Chunx.u zhang1 2 Jialing Pu1 Zhiq.n He2 1 information Recording Materials Lab Beijing Institute of Graphic Communication Beijing102600 China 2 key laboratory of luminescence and optical information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing 100044 China

The triphenylne derivatives are chosen as one of negative birefringent materials to form a compensator for widening the viewing *** liq.id crystal molecules have positive birefringence in refractive *** anisotropy causes light leakage and results in narrow range of the viewing angle of the *** our study,a series of novel discotic triphenylene derivertives bearing one triphenylene discogen as core and three cyano-biphenyl moities was synthesized and their thermal behaviors were studied using polarizing optical microscope,differential scanning calorimeter and x.ray *** was found that those molecules containing even numbers of methylene spacers showed nematic *** being mix.d with MMA（methyl methacrylate）,they also showed nematic phase at the mesophase temperature *** hybrid mode alignment of the molecules can be fix.d by photopolymerization of acryloyl *** the alignment of the discotic molecules can be freely controlled,a new area of optically anisotropic film will be produced.

关键词： discotic liq.id crystal triphenylene derivertives discoticnematic optically anisotropic film

Structural and optical properties of non-polar （110） ZnO films grown by P-MBE

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Structural and optical properties of non-polar （110） ZnO...

第六届国际氧化锌及相关材料研讨会

作者： F. J. Liu 1R. zhang 2 Z. F. Hu 1 J. Sun 1 H. q. Huang 1 J. W. Zhao 1 P. G. Yin 3 L. Guo 3 x. q. zhang 1 1key laboratory of luminescence and optical information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing 100044 People’s Republic of China 2Center of Conservation and Restoration Capital Museum Beijing 100045 People’s Republic of China 3School of Chemistry and Environment Beijing University of Aeronautics and Astronautics Beijing 100191 People’s Republic of China

＜正＞Zinc ox.de is a very potential functional material not only because of its wide direct band gap but also due to its well piezoelectric property. These properties can be used in realizing many ultraviolet optoele...

关键词：

Tex.ured Asymmetric Membrane Electrode Assemblies of Piezoelectric Phosphorene and Ti_(3)C_(2)T_(x.Mx.ne Heterostructures for Enhanced Electrochemical Stability and Kinetics in LIBs

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Nano-Micro Letters 2024年第4期16卷 394-414页

作者： Yihui Li Juan x.e Ruofei Wang Shugang Min Zewen x. Yangjian Ding Pengcheng Su x.ngmin zhang Liyu Wei Jing‑Feng Li Zhaoq.ang Chu Jingyu Sun Cheng Huang Volta and DiPole Materials Labs College of EnergySoochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceKey Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical IndustrySoochow UniversitySuzhou 215006People’s Republic of China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001People’s Republic of China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204People’s Republic of China State key laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China High Density Materials Technology Center for Flex.ble Hybrid Electronics Suzhou Institute of Electronic Functional Materials TechnologySuzhou Industrial Technology Research InstituteSuzhou 215151People’s Republic of China Institute of Advanced Materials and Institute of Membrane Science and Technology Jiangsu National Synergistic Innovation Center for Advanced MaterialsSuzhou Laboratory and Nanjing Tech UniversityNanjing 211816People’s Republic of China

Black phosphorus with a superior theoretical capacity(2596 mAh g^(-1))and high conductivity is regarded as one of the powerful candidates for lithium-ion battery(LIB)anode materials,whereas the severe volume ex.ansion and sluggish kinetics still impede its applications in *** contrast,the ex.oliated two-dimensional phosphorene owns negligible volume variation,and its intrinsic piezoelectricity is considered to be beneficial to the Li-ion transfer kinetics,while its positive influence has not been discussed ***,a phosphorene/Mx.ne heterostructure-tex.ured nanopiezocomposite is proposed with even phosphorene distribution and enhanced piezo-electrochemical coupling as an applicable free-standing asymmetric membrane electrode beyond the skin effect for enhanced Li-ion *** ex.erimental and simulation analysis reveals that the embedded phosphorene nanosheets not only provide abundant active sites for Li-ions,but also endow the nanocomposite with favorable piezoelectricity,thus promoting the Li-ion transfer kinetics by generating the piezoelectric field serving as an ex.ra *** waltzing with the Mx.ne framework,the optimized electrode ex.ibits enhanced kinetics and stability,achieving stable cycling performances for 1,000 cycles at 2 A g^(-1),and delivering a high reversible capacity of 524 m Ah g^(-1)at-20℃,indicating the positive influence of the structural merits of self-assembled nanopiezocomposites on promoting stability and kinetics.

关键词： Phosphorene Nanopiezocomposite Piezo-electrochemical coupling Membrane electrode assembly Lithium-ion storage

Intense Visible Upconversion luminescence of Rare Earth Niobate Phosphors

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Intense Visible Upconversion Luminescence of Rare Earth Niob...

2007亚洲显示国际会议

作者： Y.x.Pan C.H.Yang x.F.Min q.Y.zhang key Lab of Special Functional Materials of Ministry of Education and Institute of optical communication,South China University of Technology,Guangzhou 510641,China

Erand Ybco-doped rare earth niobate phosphors have been prepared by means of conventional solid state synthesis in the *** structures of YNbO:Er,Yb,LaNbO:Er,Yb and GdNbO:Er,Yb were characterized by *** normal and upconversion luminescent spectra with ex.itation of x.non arc lamp and 980nm laser diodes have comparative- ly *** Erand Ybco-doped rare earth niobate phosphors show intense green and weak red emissions,which are respectively originated from the typical transitions H(11)/2),S-I(15)/2)and F-I(15)/2)of *** weak blue emission at about 409nm,415 nm and 480 nm are respectively associated with the transitions of Erfrom ex.ited states H,Fand Fto ground state I(15)/2),indicating the rare earth niobates possess low *** influence of the Erand Ybconcentration on the upconversion intensity of Erin YNbO has been *** mecha- nisms of the upconversion luminescence of Erhave been proposed.

关键词： Upconversion Niobate Photoluminescence

对以并五苯和酞菁铜为不同有源层的有机薄膜晶体管特性研究

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物理学报 2008年第9期57卷 5911-5917页

作者：袁广才徐征赵谡玲张福俊姜薇薇黄金昭宋丹丹朱海娜黄金英徐叙瑢北京交通大学光电子技术研究所北京100044 北京交通大学发光与光信息技术教育部重点实验室北京100044

通过扫描电镜和x.线衍射对SiO2衬底上生长并五苯和酞菁铜薄膜的表面形貌进行表征,并得到在SiO2衬底上生长的并五苯薄膜是以岛状结构生长,其大小约为100 nm,且薄膜有较好的结晶取向,呈多晶态存在.酞菁铜薄膜则没有表现出明显的生长机理... 详细信息

通过扫描电镜和x.线衍射对SiO2衬底上生长并五苯和酞菁铜薄膜的表面形貌进行表征,并得到在SiO2衬底上生长的并五苯薄膜是以岛状结构生长,其大小约为100 nm,且薄膜有较好的结晶取向,呈多晶态存在.酞菁铜薄膜则没有表现出明显的生长机理,其呈非晶态存在.还对通过掩膜的方法制作得以酞菁铜和并五苯为有源层的顶栅极有机薄膜晶体管的特性进行了研究.有源层的厚度为40 nm,绝缘层SiO2的厚度为250 nm,器件的沟道宽长比(W/L)为20.通过Keithley 2410I-V测量仪对OTFTs器件的电学性质进行表征,其器件的开关电流比(on/off)分别为105和104,阈值电压VTH分别为-20 V和-15 V,器件的场效应载流子迁移率μEF分别为0.0694 cm2/V.s和1.201cm2/V.s.

关键词：有机薄膜晶体管并五苯薄膜酞菁铜薄膜场效应迁移率(μ_(EF))