检索结果-内蒙古大学图书馆

120 mm Single-crystalline perovskite and wafers： towards viable applications

science China Chemistry 2017年第10期60卷 1367-1376页

作者： Yucheng Liu Xiaodong Ren Jing Zhang Zhou Yang Dong Yang Fengyang Yu Jiankun Sun Changming Zhao Zhun Yao Bo Wang Qingbo Wei Fengwei Xiao Haibo Fan Hao Deng Liangping Deng Shengzhong (Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Laboratory for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China iChEM Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Xi'an LONGI Silicon Materials Corporation Xi 'an 710100 China

As the large single-crystalline silicon wafers have revolutionized many industries including electronics and solar cells, it is envisioned that the availability of large single-crystalline perovskite crystals and wafers will revolutionize its broad applications in photovoltaics, optoelectronics, lasers, photodetectors, light emitting diodes(LEDs), etc. Here we report a method to grow large single-crystalline perovskites including single-halide crystals: CH3NH3PbX3(X=I, Br, Cl), and dual-halide ones:CH3NH3Pb(ClxBr1.x)3 and CH3NH3Pb(BrxI1.x)3, with the largest crystal being 120 mm in length. Meanwhile, we have advanced a process to slice the large perovskite crystals into thin wafers. It is found that the wafers exhibit remarkable features:(1)its trap-state density is a million times smaller than that in the microcrystalline perovskite thin films(MPTF);(2) its carrier mobility is 410 times higher than its most popular organic counterpart P3HT;(3) its optical absorption is expanded to as high as910 nm comparing to 797 nm for the MPTF;(4) while MPTF decomposes at 150 °C, the wafer is stable at high temperature up to270 °C;(5) when exposed to high humidity(75% RH), MPTF decomposes in 5 h while the wafer shows no change for overnight;(6) its photocurrent response is 250 times higher than its MPTF counterpart. A few electronic devices have been fabricated using the crystalline wafers. Among them, the Hall test gives low carrier concentration with high mobility. The trap-state density is measured much lower than common semiconductors. Moreover, the large SC-wafer is found particularly useful for mass production of integrated circuits. By adjusting the halide composition, both the optical absorption and the light emission can be fine-tuned across the entire visible spectrum from 400 nm to 800 nm. It is envisioned that a range of visible lasers and LEDs may be developed using the dual-halide perovskites. With fewer trap states, high mobility, broader absorption, and humidity

关键词： single-crystal growth perovskite wafer IC devices photodetector array

来源：评论

学校读者我要写书评

暂无评论

Recent Advances in Wide-Bandgap Organic-Inorganic Halide Perovskite Solar Cells and Tandem Application

引用

Nano-Micro Letters 2023年第5期15卷 254-297页

作者： Ting Nie Zhimin Fang Xiaodong Ren Yuwei Duan Shengzhong(Frank)Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Dalian National Laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Perovskite-based tandem solar cells have attracted increasing interest because of its great potential to surpass the Shockley-Queisser limit set for single-junction solar *** the tandem architectures,the wide-bandgap(WBG)perovskites act as the front absorber to offer higher open-circuit voltage(VOC)for reduced thermalization *** advantage of tunable bandgap of the perovskite materials,the WBG perovskites can be easily obtained by substituting halide iodine with bromine,and substituting organic ions FA and MA with *** date,the most concerned issues for the WBG perovskite solar cells(PSCs)are huge VOC deficit and severe photo-induced phase *** VOC loss and improving photostability of the WBG PSCs are crucial for further efficiency ***,scientists have made great efforts to overcome these key issues with tremendous *** this review,we first summarize the recent progress of WBG perovskites from the aspects of compositions,additives,charge transport layers,interfaces and preparation *** key factors affecting efficiency and stability are then carefully discussed,which would provide decent guidance to develop highly efficient and stable WBG PSCs for tandem application.

关键词： Efficiency Perovskite Solar cell Stability Wide-bandgap

来源：评论

学校读者我要写书评

暂无评论

A post-treatment to reduce stress concentration sensitivity under intermediate-temperature fatigue in GH4169: High-energy impact composite modification

Transactions of Materials Research

引用

Transactions of Materials Research 2025年第3期1卷

作者： Guoxin Lu Qiang Wang Bonnie Attard Arif Rochman Guofang Zhang Luqing Cui Zhong Ji Glenn Cassar MOE Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Shandong University Jinan 250061 China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material AECC Beijing Institute of Aeronautical Materials Beijing 100095 China Department of Metallurgy and Materials Engineering University of Malta MSD 2080 Malta Institute of Engineering and Transport The Malta College of Arts Science & Technology PLA 9032 Malta National Key Lab of Aerospace Power System and Plasma Technology Xi’an Jiaotong University Xi’an 710049 China

The study focuses on a novel post-treatment method, high-energy impact composite modification, combining mechanical shot peening and laser shock processing to improve the fatigue performance of the nickel-based superalloy GH4169 at intermediate temperatures. The synergistic interaction between mechanical impact (SP-induced plastic deformation) and laser-induced shock waves enabled a 2.5-fold increase in effective treatment depth (up to 1500 μm) compared to SP alone (400 μm), while achieving a surface hardness of 520 HV and compressive residual stress of −1465 MPa, exceeding single-process results by 4.5% and 54.2%, respectively. The dual-impact approach significantly enhanced surface hardness and compressive residual stress, addressing the high sensitivity to stress concentration. Experimental results demonstrate that HEICM eliminated stress concentration sensitivity at 650 °C, elevating the fatigue limit of notched specimens (Kt = 3) to 638 MPa – equivalent to the fatigue strength of smooth specimens (Kt = 1) in conventional grinding states (636 MPa). This represents a 116% improvement over untreated notched specimens (295 MPa) and surpasses SP-treated counterparts (446 MPa) by 43%, thereby extending the fatigue life of GH4169 alloys in aerospace applications.

关键词： Composite modification Shot peening surface strengthening Superalloy High-cycle fatigue

来源：评论

学校读者我要写书评

暂无评论

Effects of Magnetization on Thermoelectric Transport Properties of CoSb_(3)Material

引用

Journal of Wuhan University of technology(Materials science) 2021年第3期36卷 353-357页

作者： ZHU Jianglong TONG Xin NIU Shuo LIU Zhiyuan XU Dong Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMaanshan 243002China School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China

The effects of magnetization on the phase composition,microstructure and thermoelectric transport properties of CoSb_(3)were studied *** magnetic properties of CoSb_(3)material were also measured at room temperature in order to confirm its magnetic *** results of XRD and FESEM analysis indicated that the phase composition and microstructure of the CoSb_(3)were not affected by *** results of thermoelectric transport measurement showed that the electrical and thermal transport properties of materials were also not affected by *** results were mainly attributed to the diamagnetism of the CoSb_(3)material,which were consistent with the results of the magnetic properties *** study is expected to provide a special research perspective for studying the effects of the external conditions on the structure and properties of thermoelectric materials.

关键词： CoSb_(3)materials magnetization thermoelectric properties thermoelectric materials

来源：评论

学校读者我要写书评

暂无评论

Spray pyrolysis-derived W-doped MoSe_(2)/rGO paper-like microspheres:optimization of microstructure and mesostructure for enhanced lithium storage

引用

Rare Metals 2024年第7期43卷 3019-3031页

作者： Wei Wang Jun-Yu Chen Jie Ouyang Hong Yin Ao-Jie Li Liang Chen Jun-Lin Huang Yu-Can Zhu Gang-Yong Li Zhao-Hui Hou Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and TechnologyYueyang 414006China School of Chemistry and Chemical Engineering Hunan Institute of Science and TechnologyYueyang414006China Hunan Province Key Laboratory of Materials Surface&Interface Science and Technology Material Science and Engineering SchoolCentral South University of Forestry and TechnologyChangsha 410004China International Iberian Nanotechnology Laboratory(INL) AvMestre Jose Veiga4715-330 BragaPortuga

Two-dimensional MoSe_(2) is a promising candidate for lithium-ion battery ***,its conductivity and lithium storage volumetric effect still need to be *** this work,W-doped MoSe_(2)/rGO paper-like microspheres are successfully prepared through ultrasonic spray pyrolysis,achieving optimization at both the microstructure and mesostructure to enhance the lithium storage performance of the ***,by utilizing the similar two-dimensional structure between MoSe_(2) and rGO,self-assembly is achieved through spray pyrolysis,resulting in a well-defined van der Waals heterostructure at the interface on the microscale,enhancing the electron and ion transfer capability of the ***,the mesoscale paper-like microsphere morphology provides additional volume expansion buffering ***,W-doping not only increases the interlayer spacing of MoSe_(2)(0.73 nm),thereby reducing the diffusion resistance of Li+,but also allow for the modulation of the energy band structure of the *** functional theory(DFT)calculations confirm that W-doped MoSe_(2)/rGO exhibits the narrowest bandgap(0.892 eV).Therefore,the composite demonstrates excellent lithium storage performance,maintaining a specific capacity of 732.9 mAh·g^(-1)after 300 cycles at a current density of 1 A·g^(-1).

关键词： Molybdenum selenide Heterostructure Microspheres Li-ion batteries Kinetics

来源：评论

学校读者我要写书评

暂无评论

Alloying engineering for thermoelectric performance enhancement in p-type skutterudites with synergistic carrier concentration optimization and thermal conductivity reduction

引用

Journal of advanced Ceramics 2023年第3期12卷 539-552页

作者： Zhiyuan Liu Yonggui Wang Ting Yang Zuju Ma Huiyan Zhang Hailing Li Ailin Xia Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMaanshan 243002China School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China School of Environmental and Materials Engineering Yantai UniversityYantai 264005China

The enhancements in thermoelectric(TE)performances of p-type skutterudites are usually limited due to the relatively low Seebeck coefficients owing to the higher carrier concentration and more impurity phases induced by inherent structural instability of a Fe-based *** shown in this study,alloying engineering of Ni doping at Fe sites in a p-type CeFe_(3.8)Co_(0.2)Sb_(12)skutterudite can not only reduce the impurity phases with high thermal conductivity but also regulate the carrier concentration,and thus significantly increase the Seebeck *** thermal conductivity was largely suppressed due to the enhanced point defect phonon scattering and decreased hole *** a result,a TE figure of merit ZT of the CeFe_(3.5)Ni_(0.3)Co_(0.2)Sb_(12)sample reached 0.8,which is approximately 50%higher than that of a Ni-free *** Ni doping can maintain a high ZT at a high temperature by controlling the reduction in a band ***,a high average ZT close to 0.8 at 650–800 K for CeFe_(3.5)Ni_(0.3)Co_(0.2)Sb_(12)was obtained,which was comparable to or even higher than those of the reported Ce-filled Fe-based skutterudites due to the synergistic optimization of electrical and thermal *** study provides a strategy to synergistically optimize electrical–thermal performances of the p-type skutterudites by alloying engineering.

关键词： p-type skutterudite materials Ni doping synergistic optimization thermoelectric(TE)properties

来源：评论

学校读者我要写书评

暂无评论

Two dimensional metal halide perovskites: Promising candidates for light-emitting diodes

引用

Journal of Energy Chemistry 2019年第10期28卷 97-110页

作者： Lu Zhang Yucheng Liu Zhou Yang Shengzhong(Frank)Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of EducationSchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710119ShaanxiChina Laboratory of Applied Surface and Colloid Chemistry National 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'an 710119ShaanxiChina iChEM Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Two dimensional halide perovskites are emerging as attractive electroluminescent materials for developing high-performance light-emitting devices owing to their unique structures and/or superior optoelectronic *** review begins with an introduction to the working principles of and the key figures for evaluating the performance of ***,the structure and optoelectronic properties of two dimensional perovskites are summarized and discussed. Their advantages in LED application over their 3D counterparts are systematically *** the theoretically discussion,the progresses on the preparation of two dimensional perovskite materials as well as their performances in LEDs have been summarized. At last,several challenges and prospects are presented for achieving high performance 2D perovskite-based LEDs.

关键词： Perovskite 2D LEDs External quantum efficiency

来源：评论

学校读者我要写书评

暂无评论

Ultra-high-temperature application of MXene: Stabilization of 2D Ti_(3)C_(2)T_(x) for cross-scale strengthening and toughening of 3D TiC

引用

Journal of advanced Ceramics 2024年第1期13卷 1-10页

作者： Lu Liu Guobing Ying Quanguo Jiang Dong Wen Peng Wang Meng Wu Ziying Ji Yongting Zheng Xiang Wang Department of Materials Science and Engineering College of Mechanics and MaterialsHohai UniversityNanjing 211100China Key Laboratory of Superlight Materials&Surface Technology Ministry of EducationHarbin Engineering UniversityHarbin 150001China Shenzhen Key Laboratory for Advanced Materials School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Center for Composite Materials and Structures Harbin Institute of TechnologyHarbin 150001China

Transition metal carbide/nitride cores within MXenes make them considerably useful for ultra-high-temperature ***,extensive research on Ti_(3)C_(2)T_(x) MXene has revealed its tendency to undergo a phase transition to TiCy at temperatures above 800℃due to high activity of a superficial Ti atomic ***,spark plasma sintering of Ti_(3)C_(2)T_(x) and TiC is performed to prevent the Ti_(3)C_(2)T_(x) phase transition at temperatures up to 1900℃through the fabrication of composites at a pressure of 50 *** a focused ion beam scanning electron microscope to separate layered substances in the composites and examining selected area diffraction spots in a transmission electron microscope enabled identification of non-phase-transitioned ***-principles calculations based on density functional theory indicated the formation of strong chemical bonding interfaces between Ti_(3)C_(2)T_(x) and TiC,which imposed a stability constraint on the Ti atomic layer at the Ti_(3)C_(2)T_(x) *** performance tests,such as three-point bending and fracture toughness analysis,demonstrated that the addition of Ti_(3)C_(2)T_(x) can effectively improve the cross-scale strengthening and toughening of the TiC matrix,providing a new path for designing and developing two-dimensional(2D)carbides cross-scale-enhanced three-dimensional(3D)carbides with the same elements relying on a wide variety of MXenes.

关键词： MXene ultra-high-temperature phase stability interface bonding cross-scale strengthening and toughening structural ceramic composites

来源：评论

学校读者我要写书评

暂无评论

Corrosion mechanism of Mg alloys involving elongated long-period stacking ordered phase and intragranular lamellar structure

引用

Journal of Materials science & technology 2023年第20期151卷 190-203页

作者： Jinshu Xie Jinghuai Zhang Zhi Zhang Zijian Yu Zhihao Xu Ru Wang Daqing Fang Xiaobo Zhang Xiaoru Zhang Ruizhi Wu Key Laboratory of Superlight Material and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Nanjing Institute of TechnologyNanjing 211167China

It is a long-term challenge to further improve the corrosion resistance while ensuring the strength of magnesium(Mg)*** the effect of potential fluctuation on the micro-galvanic corrosion and the subsequent film formation is important for understanding the corrosion mechanism of Mg alloys with multiple strengthening phases/***,we prepared the high-strength Mg-14.4Er-1.44Zn-0.3Zr(wt.%)alloys containing hybrid structures,i.e.,elongated long-period stacking ordered(LPSO)blocks+intragranular stacking faults(SFs)/LPSO *** Mg alloy with elongated LPSO blocks and intragranular LPSO lamellae(EZ-500 alloy)obtains good corrosion resistance(2.2 mm y^(–1)),while the Mg alloy containing elongated LPSO blocks and intragranular SFs(EZ-400 alloy)shows a significantly higher corrosion rate(6.9 mm y^(–1)).The results of scanning Kelvin probe force microscopy(SKPFM)show the elongated LPSO blocks act as cathode phase(87 mV in EZ-400 alloy),and the SFs serve as the weak anode(30 mV in EZ-400 alloy),resulting in high potential fluctuation in EZ-400 *** the contrary,both elongated blocks and intragranular lamellae are cathodic LPSO phase(67–69 mV)in EZ-500 alloy,leading to a lower potential *** in-situ atomic force microscope(AFM)observation indicates that high potential fluctuation would cause strong micro-galvanic corrosion,and subsequently leads to the failure in rapid formation of corrosion film,finally forming a loose and porous film,while relatively low potential fluctuation could result in more uniform corrosion mode and facilitate the rapid formation of protective ***,we propose that it is an effective way to develop high-strength corrosionresistant Mg alloys by controlling the potential fluctuation to form a“uniform potential”strengthening microstructure。

关键词： Mg alloys Stacking faults LPSO phase SKPFM Quasi in-situ AFM Corrosion behavior Potential fluctuation

来源：评论

学校读者我要写书评

暂无评论

Anthradithiophene based hole-transport material for efficient and stable perovskite solar cells

引用

Journal of Energy Chemistry 2020年第9期29卷 293-298,I0009页

作者： Guohua Wu Yaohong Zhang Ryuji Kaneko Yoshiyuki Kojima Ashraful Islam Kosuke Sugawa Joe Otsuki Shengzhong Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Laboratory for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710119China College of Science and Technology Nihon UniversityChiyoda-ku101-8308 TokyoJapan Department of Engineering Science Faculty of Informatics and EngineeringThe University of Electro-CommunicationsChofu182-8585 TokyoJapan Photovoltaic Materials Group National Institute for Materials Science(NIMS)Tsukuba 305-0047Japan

A novel hole-transport material(HTM)based on an anthradithiophene central bridge named BTPA-7 is *** comparison to spiro-OMeTAD(2,2’,7,7’-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9’-spirobifluorene),the synthetic steps of BTPA-7 are greatly reduced from 6 to 3 and the synthetic cost of BTPA-7 is nearly a half that of ***,BTPA-7 exhibits a relatively lower conductivity but higher hole mobility and higher glass transition temperature(Tg)than *** with the photovolatic performance for spiro-OMeTAD,FA0.85MA0.15PbI3 and MAPbI3 PSC devices based on BTPA-7 exhibit slightly lower PCEs with the values of 17.58%(18.88%for spiro-OMeTAD)and 11.90%(13.25%for spiro-OMeTAD),***,a dramatically higher JSC of PSC based on BTPA-7is achieved,which arises from the higher hole mobility of *** addition,the relatively hydrophobic character of BTPA-7 eventually enhances the PSC device *** cost,higher hole mobility,higher Tg,satisfactory photovoltaic performance,and superior device stability of BTPA-7 can be utilized as a substitute for spiro-OMeTAD in PSCs.

关键词： Anthradithiophene Hole-transport material Stability Synthetic cost

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：