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ion doping simultaneously increased the carrier density and modified the conduction type of Sb_(2)Se_(3) thin films towards quasi-homojunction solar cell

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Journal of Materiomics 2021年第6期7卷 1324-1334页

作者： Guangxing Liang Xingye Chen Donglou Ren Xiangxing Jiang Rong Tang Zhuanghao Zheng Zhenghua Su Ping Fan Xianghua Zhang Yi Zhang Shuo Chen Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China Univ Rennes CNRSISCR(Institut des Sciences Chimiques de Rennes)UMR 6226F-35000RennesFrance Tianjin Key Laboratory of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterNankai UniversityTianjin300350China

Antimony selenide(Sb_(2)Se_(3))has drawn tremendous research attentions in recent years as an environment-friendly and cost-efficient photovoltaic ***,the intrinsic low carrier density and electrical conductivity limited its scope of *** this work,an effective ion doping strategy was implemented to improve the electrical and photoelectrical performances of Sb_(2)Se_(3) thin *** Sn-doped and I-doped Sb_(2)Se_(3) thin films with controllable chemical composition can be prepared by magnetron sputtering combined with post-selenization treatment based on homemade plasma sintered *** a result,the Sn-doped Sb_(2)Se_(3) thin film exhibited a great increase in carrier density by several orders of magnitude,by contrast,a less increase with one order of magnitude was achieved for the Idoped Sb_(2)Se_(3) thin ***,such cation or anion doping could simultaneously modify the conduction type of Sb_(2)Se_(3),enabling the first fabrication of a substrate structured Sb_(2)Se_(3)-based quasihomojunction thin film solar cell with configuration of Mo/Sb_(2)Se_(3)-Sn/Sb_(2)Se_(3)-I/ITO/*** obtained power conversion efficiency exceeding 2%undoubtedly demonstrated its attractive photovoltaic application potential and further investigation necessity.

关键词： Sb_(2)Se_(3) Thin film ion doping Carrier density Quasi-homojunction solar cell

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Li+&Ag+ and Li+&Cd2+ double-ion-doping strategy to improve the efficiency of Cu2ZnSn(S,Se)4 solar cells

Li+&Ag+ and Li+&Cd2+ double-ion-doping strategy to improve t...

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第七届新型太阳能电池材料科学与技术学术研讨会

作者： Junye Tong Gang Wang Daocheng Pan Lingling Wang Xintong Zhang Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory of UV-Emitting Materials and Technology of Ministry of EducationNortheast Normal University State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences

ion doping strategy is a promising method to enhance the efficiency of CuZnSn(S,Se)(CZTSSe) solar cells,however,most of the reported works focus on studying the single ion doping in CZTSSe absorber ***,Li&Agand Li&Cd double-ion-doping strategy are applied to improve the microstructure and device *** found that the double-ion-doping strategy can obviously increase the grain size,reduce the thickness of fine-grain layers and enhance the device ***,the PCEs of Li&Agand Li&Cd doped CZTSSe solar cells are up to 8.87 % and 8.39 %,*** shows an encouraging improvement of over 43.5 % and 35.8 % enhancement compared with the traditional method(6.18 %),and significantly higher than single ion doping strategy(7.60 %,7.99 % and 7.11 % for Li,Ag,and Cd doped CZTSSe solar cells).This work provides a new solution to improve the microstructure and device performances of CZTSSe solar cells.

关键词： Kesterite Solar cell ion doping Thin film Solution process

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doping suppresses lattice distortion of vacant quadruple perovskites to activate self-trapped excitons emission

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Nano Research 2024年第4期17卷 3068-3078页

作者： Zhipeng Chen Fei Zhang Dongwen Yang Huifang Ji Xu Chen Di Wu Xinjian Li Yu Zhang Zhifeng Shi Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

The vacancy-ordered quadruple perovskite Cs_(4)CdBi_(2)Cl_(12),as a newly-emerging lead-free perovskite system,has attracted great research interest due to its excellent stability and direct band ***,the poor luminescence performance limits its application in light-emitting diodes(LEDs)and other ***,for the first time,an Ag^(+)ion doping strategy was proposed to greatly improve the emission performance of Cs_(4)CdBi_(2)Cl_(12) synthesized by hydrothermal *** functional theory calculations combined with experimental results evidence that the weak orange emission from Cs_(4)CdBi_(2)Cl_(12) is attributed to the phonon scattering and energy level crossing due to the large lattice distortion under excited ***,Ag^(+)ion doping breaks the intrinsic crystal field environment of Cs_(4)CdBi_(2)Cl_(12),suppresses the crossover between ground and excited states,and reduces the energy loss in the form of nonradiative *** a critical doping amount of 0.8%,the emission intensity of Cs_(4)CdBi_(2)Cl_(12):Ag^(+)reaches the maximum,about eight times that of the pristine ***,the doped Cs_(4)CdBi_(2)Cl_(12) still maintains excellent stability against heat,ultraviolet irradiation,and environmental oxygen/*** above advantages make it possible for this material to be used as solid-state phosphors for white LEDs applications,and the Commission International de I’Eclairage color coordinates of(0.31,0.34)and high color rendering index of 90.6 were *** importantly,the white LED demonstrates remarkable operation stability in air ambient,showing almost no emission decay after a long working time for 48 *** believe that this study puts forward an effective ion-doping strategy for emission enhancement of vacancy-ordered quadruple perovskite Cs_(4)CdBi_(2)Cl_(12),highlighting its great potential as efficient emitter compatible for practical applications.

关键词： Cs_(4)CdBi_(2)Cl_(12) self-trapped excitons ion doping emission enhancement stability

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Synergistic effect of V_(2)O_(5)and Bi_(2)O_(3) on the grain boundary structure of high-frequency NiCuZn ferrite ceramics

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Journal of Advanced Ceramics 2022年第6期11卷 912-921页

作者： Xiuyuan FAN Guohua BAI Zhenhua ZHANG Qiming CHEN Jiaying JINa Jiafeng XUa Xuefeng ZHANG Mi YAN School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsKey Laboratory of Novel Materials for Information Technology of Zhejiang ProvinceZhejiang UniversityHangzhou 310027China Institute of Advanced Magnetic Materials College of Materials&Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310012China

High-frequency soft magnetic ferrite ceramics are desired in miniaturized and efficient power electronics but remain extremely challenging to deploy on account of the power loss(Pcv)at megahertz ***,we prepared NiCuZn ferrite with superior high-frequency properties by V_(2)O_(5)and Bi_(2)O_(3)synergistic doping,which proves to be a potent pathway to reduce Pcv of the ferrite at megahertz *** sample doped with 800 ppm V_(2)O_(5)and 800 ppm Bi_(2)O_(3)yielded the most optimized magnetic properties with a Pcv of 113 kW/m^(3)(10 MHz,5 mT,25℃),an initial permeability(μi)of 89,and a saturation induction(Bs)of 340 mT,which is at the forefront of the reported *** outstanding properties are closely related to the notable grain boundary structure,which features a new type of nano-Bi_(2)Fe_(4)O_(9)phase around ferrite grains and a Ca/Si/V/O amorphous *** results indicate great strides in correlating the grain boundary structure with multiple-ion doping and set the scene for the developing high-frequency soft magnet ferrites.

关键词： NiCuZn ferrite megahertz application grain boundary Bi_(2)Fe_(4)O_(9) ion doping

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Surface modification and characterization of F-Co doped spinel LiMn_2O_4

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Rare Metals 2006年第Z1期25卷 33-38页

作者： WATANABE Takayuki Department of Environmental Chemistry and Engineering Tokyo Institute of Technology 4259 Nagatsuta Yokomaha 226-8502 Japan

Spinel LiCo0.09Mn1.91O3.92F0.08 as cathode material was modified with LiCoO2 by the sol-gel method, and the crystal structure, morphology and electrochemical performance were characterized with XRD, SEM, EDS, AAS and charge-discharge test in this paper. The results show that a good clad coated on parent material can be synthesized by the sol-gel method, and the materials with modification have perfect spinel structure. LiCo0.09Mn1.91O3.92F0.08 materials coated by LiCoO2 improve the stability of crystal structure and decrease the dissolution of Mn into electrolyte. With the LiCoO2 content increasing, the specific capacity and cycle performance of samples are improved. The capacity loss is also suppressed distinctly even at 55 ℃.

关键词： lithium ion batteries spinel LiMn2O4 ion doping surface coating

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Characterization of metal doped-titanium dioxide and behaviors on photocatalytic oxidation of nitrogen oxides

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Journal of Environmental Sciences 2007年第12期19卷 1505-1509页

作者： LIU Yue WANG Hai-qiang WU Zhong-biao Department of Environmental Engineering Zhefiang University Hangzhou 310027 China.

A series of nanosized ion-doped TiO2 catalysts with different ion content （between 0.1 at.% and 1.0 at.%） have been prepared by wet impregnation method and investigated with respect to their behavior for UV photocatalytic oxidation of nitric oxide. The catalytic activity was correlated with structural, electronic and surface examinations of the catalysts using X-ray diffraction analysis （XRD）, ultraviolet-visible （UV-Vis） absorption spectroscopy, transmission electron microscopy （TEM）, energy disperse spectrometer （EDS） and high resolution-transmission electron microscopy （HR-TEM） techniques. An enhancement of the photocatalytic activity was observed for Zn2＋ doping catalyst ranged from 0.1 at.% to 1.0 at.% which was attributed to the lengthened lifetime of electrons and holes. The improvement in photocatalytic activity could be also observed with the low doping concentration of Cr^3＋（0.1 at.%）. However, the doping of Fe^3＋, Mo^6＋, Mn^2＋ and the high doping concentration of Cr^3＋ had no contribution to photocatalytic activity of nitric oxide.

关键词： NO photocatalytic oxidation ion doping doped

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Ribbon-like Cu doped V6O13 as Cathode Material for High-performance Lithium ion Batteries

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Journal of Wuhan University of Technology(Materials Science) 2017年第6期32卷 1397-1401页

作者：何金云龙飞 PENG Daijiang WU Xiaoli MO Shuyi ZOU Zhengguang Guangxi Key Laboratory of New Energy and Building Energy Saving Guilin University of Technology Guilin 541004 China KeyLaboratory of Nonferrous Materials and New Processing Technology Ministry of Education Guilin University of Technology Guilin 541004 China

Ribbon-like Cu doped V6O（13） was synthesized via a simple solvothermal approach followed by heat treatment in *** an cathode material for lithium ion battery,the ribbon-like Cu doped V6O（13 ）electrode exhibited good capacity retention with a reversible capacity of over 313 m Ah·g^-1 for up to 50 cycles at 0.1C,as well as a high charge capacity of 306 m Ah·g^-1 at a high current rate of 1 C,in comparison to undoped V6O（13 ）electrode（267 m Ah·g^-1 at 0.1C and 273 m Ah·g^-1 at 1 C）.The high rate capability and better cycleability of the doped electrode can be attributed to the influence of the Cu ions on the mophology and the electronic conductivity of V6O（13） during the lithiation and delithiation process.

关键词： vanadium oxide ion doping cathode material lithium ion battery

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Synthesis and electrochemical properties of Li_(1-x)V_xCr_yFe_(1-x)PO_4/C as a cathode material

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Chinese Chemical Letters 2008年第3期19卷 337-341页

作者： Shi Tao Song Pei Hua Ma Shi You Li Xiao Chuan Deng Chun Yan Yan Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining 810008 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Composites Li1-xVxCryFe1-yPO4/C（x=0.01, 0.02; y = 0.01, 0.02） were synthesized by solid-state reaction method. The influence of the content of doping vanadium and chromium on the structure of Li1-xVxCryFe1-yPO4/C was investigated by XRD, while the morphology of powders was observed by SEM. The investigation of the electrochemical performances showed that the Li0.99V0.01Cr0.02Fe0.98PO4/C material has a higher capacity. At 0.1 C discharging rate, it is capable of delivering reversible specific capacity of 163.8 mAh/g with fairly stable cycleability.

关键词： Li1-xVxCryFe1-yPO4/C Cathode material ion doping

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Cubic multi-ions-doped Na_(2)TiO_(3) nanorod-like coatings:Structure-stable,highly efficient platform for ions-exchanged release to immunomodulatory promotion on vascularized bone apposition

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Bioactive Materials 2022年第12期7卷 72-90页

作者： Dongmei Yu Bo Li Meng Yu Shuo Guo Zheng Guo Yong Han a State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710049ShaanxiChina Department of Orthopaedics Tangdu HospitalFourth Military Medical UniversityXi’an710038ShaanxiChina

The dissolution-derived release of bioactive ions from ceramic coatings on metallic implants,despite improving osseointegration,renders a concern on the interfacial breakdown of the metal/coating/bone system during longterm ***,persistent efforts to seek alternative strategies instead of dissolution-derived activation are pressingly carrying *** by bone mineral containing ions as Ca2+,Mg2+,Sr2+and Zn2+,here we hydrothermally grew the quadruple ions co-doped Na2TiO3 nanorod-like *** co-doped ions partially substitute Na+in Na2TiO3,and can be efficiently released from cubic lattice via exchange with Na+in fluid rather than dissolution,endowing the coatings superior long-term stability of structure and bond *** by the coatings-conditioned extracellular ions,TLR4-NFκB signalling is enhanced to act primarily in macrophages(MΦs)at 6 h while CaSR-PI3K-Akt1 signalling is potentiated to act predominately since 24 h,triggering MΦs in a M1 response early and then in a M2 response to sequentially secrete diverse *** on endothelial and mesenchymal stem cells with the released ions and cytokines,the immunomodulatory coatings greatly promote Type-H(CD31hiEmcnhi)angiogenesis and osteogenesis in vitro and in vivo,providing new insights into orchestrating insoluble ceramics-coated implants for early vascularized osseointegration in combination with long-term fixation to bone.

关键词： Nanorod-like coating ion doping Sodium titanate Immunomodulation Angiogenesis Osseointegration

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Continuous-flow synthesis of doped all-inorganic perovskite nanocrystals enabled by a microfluidic reactor for light-emitting diode application

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Science China Materials 2020年第8期63卷 1526-1536页

作者： Pengcheng Lin Hongbin Chen Zhan Wei Yingru Lin Jinghui Lin Ying Chen Zhengdong Cheng Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Materials and EnergyGuangdong University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China Artie McFerrin Department of Chemical Engineering Texas A&M UniversityCollege StationTexas 77843-3122USA

All-inorganic perovskite nanocrystals(AIPNCs)possess the advantages of narrow emission spectrum,high quantum efficiency of luminescence and tunable luminescence position,which show a broad application prospect in the fields of optoelectronic materials and *** doping can tune their pristine crystal structures and luminescent properties or endow the AIPNCs with additional ***,a microfluidic reactor is designed to produce the Ce3+-doped AIPNCs based on the continuous-flow *** mechanism of the flow synthesis of Ce3+-doped AIPNCs is the efficient physical mixing of the precursor ions in the confined micro-channel,the reaction nucleation of crystal seeds in the poor solvent and the crystal growth of the doped AIPNCs along the flow *** synthesis process can be on-line monitored by an optical fiber absorption spectrometer and an optical fiber fluorescence *** doping concentration of Ce3+can be facilely controlled by changing the flow parameters in the microfluidic reactor,and the highest value reaches 1%.The Ce3+doping can improve the photoluminescence efficiency and the stability of the *** Ce3+-doped CsPbBr3AIPNCs can be used to manufacture green light-emitting diodes(LEDs)with a high color purity of93.3%and white LEDs with correlated color temperature(CCT)of 10,436 K,CIE color coordinates of(0.261,0.317)and color-rendering index(CRI)of *** continuous and controllable synthesis of AIPNCs by microfluidic reactor opens up new avenues for the application of the high-performance optoelectronic materials and devices.

关键词： all-inorganic perovskite nanocrystals microfluidics ion doping light-emitting diode

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