检索结果-内蒙古大学图书馆

Robust Self-Assembled Molecular Passivation for High-Performance Perovskite Solar Cells

Angewandte Chemie 2022年第25期134卷

作者： Dr. Haodan Guo Dr. Yanyan Fang Prof. Hong-Bo Cheng Dr. Jinpeng Wu Dr. Yan Lei Shumao Wang Xiangrong Li Prof. Yuhua Dai Prof. Wanchun Xiang Prof. Ding-Jiang Xue Prof. Yuan Lin Prof. Anders Hagfeldt Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Organic-Inorganic Composites Beijing Laboratory of Biomedical Materials College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China College of Material Science and Engineering Beijing Institute of Petrochemical Technology Beijing 102617 China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China Department of Chemistry Ångström Laboratory Uppsala University Uppsala 75120 Sweden

Defect passivation via post-treatment of perovskite films is an effective method to fabricate high-performance perovskite solar cells (PSCs). However, the passivation durability is still an issue due to the weak and vulnerable bonding between passivating functional groups and perovskite defect sites. Here we propose a cholesterol derivative self-assembly strategy to construct crosslinked and compact membranes throughout perovskite films. These supramolecular membranes act as a robust protection layer against harsh operational conditions while providing effective passivation of defects from surface toward inner grain boundaries. The resultant PSCs exhibit a power conversion efficiency of 23.34 % with an impressive open-circuit voltage of 1.164 eV. The unencapsulated devices retain 92 % of their initial efficiencies after 1600 h of storage under ambient conditions, and remain almost unchanged after heating at 85 °C for 500 h in a nitrogen atmosphere, showing significantly improved stability.

关键词： Durable Passivation Intermolecular Interaction Membrane Perovskite Solar Cells Self-Assembly

来源：评论

学校读者我要写书评

暂无评论

Lateral Optical Force due to the Breaking of Electric-Magnetic Symmetry

引用

Physical Review Letters 2020年第7期125卷 073901-073901页

作者： Huajin Chen Hongxia Zheng Wanli Lu Shiyang Liu Jack Ng Zhifang Lin School of Electrical and Information Engineering Guangxi University of Science and Technology Liuzhou Guangxi 545006 China State Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 China School of Physics China University of Mining and Technology Xuzhou Jiangsu 221116 China Institute of Information Optics and Key Laboratory of Optical Information Detecting and Display Technology of Zhejiang Province Zhejiang Normal University Jinhua Zhejiang 321004 China Department of Physics Southern University of Science and Technology Shenzhen Guangdong 518055 China Key Laboratory of Micro and Nano Photonic Structures Fudan University Shanghai 200433 China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China

Lateral optical forces in a direction perpendicular to light propagation have attracted increasing interest in recent years. Up to now, all lateral forces can be attributed to the symmetry breaking in the lateral directions caused by either the morphology of the scatterer geometry or the optical fields impinging on the scatterer. Here we demonstrate, both numerically and analytically, that when an isotropic scatterer breaks the electric-magnetic symmetry, a new type of anomalous lateral force can be induced along the direction of translational invariance where the illumination striking the scatterer has no propagation, field gradient, or spin density vortex (Belinfante’s spin momentum). Our analytical results are rigorous for an arbitrary size scatterer, ensuring the universality of our conclusion. Furthermore, the electric-magnetic symmetry-breaking-induced lateral force is comparable in magnitude to other components of the optical force and reversible in direction for different polarizations of the illuminating light, rendering it capable of practical optical manipulation as well as enriching the understanding of light-matter interaction.

关键词： Cooling & trapping Optical tweezers

来源：评论

学校读者我要写书评

暂无评论

VUV photoluminescence properties of KSrPO4：Dy^3＋ phosphor

引用

Journal of Rare Earths 2018年第8期36卷 802-805页

作者： Yali Chen Jingyan Fan Yajun Zhou Jing Gou Binxun Yu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Normal University. Xi'an 710119 China Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Laboratory for Advanced Energy Technology School of Materials Science andEngineering Shaanxi Normal University. Xi'an 710119 China School of Chemistry and Chemical Engineering. Shaanxi Normal University Xi'an 710119 China

White-light-emitting phosphors based on phosphate host matrix, KSrPO4 doped with Dy^3＋, were prepared by solid state reaction and their VUV luminescent properties were firstly investigated. The excitation band peaking at 125-153 nm corresponding to the absorption of PO4^3- group exhibits very strong absorption. The phosphors emit warm-white luminescence under vacuum ultraviolet excitation of 147 nm, which consists of three main emission peaks located at 475, 570 and 662 nm, *** to the luminescence and color chromaticity of the optimal sample KSrPO4：1 mol%Dy^3＋,1.3 mol%Li^＋, it can be a potential candidate for mercury-free fluorescent lamps.

关键词： Phosphor Photoluminescence VUV Rare earths

来源：评论

学校读者我要写书评

暂无评论

High-quality perovskite MAPbI_3 single crystals for broad-spectrum and rapid response integrate photodetector

引用

Journal of Energy Chemistry 2018年第3期27卷 722-727页

作者： Yunxia Zhang Yucheng Liu Zhou Yang Shengzhong(Frank)Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices ShaanxiEngineering 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

Organic–inorganic single-crystalline perovskites have attracted significant attentions due to their exceptional progress in intrinsic properties＇ investigation and applications in photovoltaics and optoelectronics. In this study, the large perovskite CH3NH3PbI3 single crystal with the largest length of 80 mm was prepared through the method of inverse-temperature crystallization. Meanwhile, the mass production of integrate photodetectors have been fabricated on the single-crystalline wafer and the photoresponse performances were investigated. The results show that the single-crystalline photodetectors have broad spectrum response to 900 nm, rapid response speed（〈40 μs） and excellent stability. These findings are of great importance for future promising perovskite single crystalline for integrated photoelectronic application.

关键词： Single-crystalline Perovskite Photodetector Rapid response

来源：评论

学校读者我要写书评

暂无评论

Meet the challenges in the “Carbon Age”

引用

Carbon Research 2022年第1期1卷 1-2页

作者： Wu, Fengchang Li, Fangbai Zhao, Xiaoli Bolan, Nanthi S. Fu, Pingqing Lam, Su Shiung Mašek, Ondřej Ong, Hwai Chyuan Pan, Bo Qiu, Xueqing Rinklebe, Jörg Tsang, Daniel C. W. Van Zwieten, Lukas Vithanage, Meththika Wang, Shaobin Xing, Baoshan Zhang, Gan Wang, Hailong State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing China Institute of Eco-environmental and Soil Sciences Guangdong Academy of Sciences Guangzhou China School of Agriculture and Environment The University of Western Australia Perth Australia Institute of Surface-Earth System Science School of Earth System Science Tianjin University Tianjin China Higher Institution Centre of Excellence (HICoE) Institute of Tropical Aquaculture and Fisheries (AKUATROP) Universiti Malaysia Terengganu Kuala Nerus Malaysia School of GeoSciences University of Edinburgh Edinburgh UK School of Information Systems and Modelling University of Technology Sydney Sydney Australia Faculty of Environmental Science & Engineering Kunming University of Science & Technology Kunming China School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou China School of Architecture and Civil Engineering University of Wuppertal Wuppertal Germany Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Kowloon Hong Kong China New South Wales Department of Primary Industries Wollongbar Australia Ecosphere Resilience Research Center University of Sri Jayewardenepura Nugegoda Sri Lanka School of Chemical Engineering and Advanced Materials University of Adelaide Adelaide Australia Stockbridge School of Agriculture University of Massachusetts Amherst USA Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China School of Environmental and Chemical Engineering Foshan University Foshan China

来源：评论

学校读者我要写书评

暂无评论

Evolution of Superatomic-Charge-density-wave and Superconductivity under Pressure in AuTe2Se4/3

arXiv

引用

arXiv 2021年

作者： Chen, Xu Fei, Ge Song, Yanpeng Ying, Tianping Huang, Dajian Pan, Bingying Yang, Xiaofan Chen, keyu Zhan, Xinhui Wang, Junjie Gou, Huiyang Chen, Xin Li, Shiyan Cheng, Jinguang Liu, Xiaobing Hosono, Hideo Guo, Jian-Gang Chen, Xiaolong Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China School of Physics and Physical Engineering Qufu Normal University Qufu273100 China Beijing100094 China School of Physics and Optoelectronic Engineering Ludong University Yantai264025 China State Key Laboratory of Surface Physics Department of Physics Laboratory of Advanced Materials Fudan University Shanghai200433 China School of Physical Sciences University of Chinese Academy of Sciences Beijing100049 China Materials Research Center for Element Strategy Tokyo Institute of Technology 4259 Nagatsuta Midori Yokohama226-8503 Japan Songshan Lake Materials Laboratory Guangdong Dongguan523808 China

Superatomic crystal is a class of hierarchical materials composed of atomically precise clusters assembled via van der Waals or covalent-like interactions. AuTe2Se4/3, an all-inorganic superatomic superconductor exhibiting superatomic-charge-density-wave (S-CDW), provides a first platform to study the response of their collectively quantum phenomenon to the external pressure in superatomic crystals. We reveal a competition between S-CDW and superconductivity using cutting-edge measurements on thin flakes at low pressures. Prominently, the pressure modulation of S-CDW ordering is 1∼2 order of magnitudes (0.1 GPa) lower than that of conventional atomic superconductors. As pressure increases to 2.5 GPa, the TCDW is suppressed and the superconducting transition temperature (Tc) is firstly enhanced, and reaches the maximum then quenches with increasing pressure. Above 7.3 GPa, a second superconducting phase emerges, and then a three-fold enhancement in the transition temperature (Tc) happens. Analyses of the crystal structure and theoretical calculations suggest a pressure-mediated switch of the conduction channel from the a- to the b-axis occur, followed by a dimensional crossover of conductivity and the Fermi surface from 2D to 3D. © 2021, CC BY-NC-SA.

关键词： Charge density waves

来源：评论

学校读者我要写书评

暂无评论

Rücktitelbild: Universal Sub-Nanoreactor Strategy for Synthesis of Yolk-Shell MoS2Supported Single Atom Electrocatalysts toward Robust Hydrogen Evolution Reaction (Angew. Chem. 40/2023)

引用

Angewandte Chemie 2023年第40期135卷

作者： Feilong Gong Yuheng Liu Yang Zhao Prof. Wei Liu Prof. Guang Zeng Prof. Guoqing Wang Prof. Yonghui Zhang Lihua Gong Prof. Jian Liu Key Laboratory of Surface and Interface Science and Technology of Henan Province College of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou Henan 450001 P. R. China State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 P. R. China DICP-Surrey Joint Centre for Future Materials Department of Chemical and Process Engineering and Advanced Technology Institute of University of Surrey Guildford Surrey GU2 7XH UK College of Chemistry and Chemical Engineering Inner Mongolia University Hohhot Inner Mongolia 010021 P. R. China

来源：评论

学校读者我要写书评

暂无评论

Back Cover: Universal Sub-Nanoreactor Strategy for Synthesis of Yolk-Shell MoS2Supported Single Atom Electrocatalysts toward Robust Hydrogen Evolution Reaction (Angew. Chem. Int. Ed. 40/2023)

引用

Angewandte Chemie International Edition 2023年第40期62卷

来源：评论

学校读者我要写书评

暂无评论

Space-confined and substrate-directed synthesis of transition-metal dichalcogenide nanostructures with tunable dimensionality

引用

Science bulletin 2020年第12期65卷 1013-1021页

作者： Zhuojun Duan Tao Chen Jianwei Shi Jin Li Kui Song Chan Zhang Sujuan Ding Bo Li Guang Wang Sigui Hu Xiaoyue He Chaoyu He Hua Xu Xinfeng Liu Chuanhong Jin Jianxin Zhong Guolin Hao School of Physics and Optoelectronics and Hunan Key Laboratory for Micro-Nano Energy Materials and Devices Xiangtan University Xiangtan 411105 China. Hunan Institute of Advanced Sensing and Information Technology Xiangtan University Xiangtan 411105 China. CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China. College of Civil Engineering and Mechanics Institute of Rheological Mechanics Xiangtan University Xiangtan 411105 China. Department of Applied Physics School of Physics and Electronics Hunan University Changsha 410082 China. Department of Physics College of Liberal Arts and Sciences National University of Defense Technology Changsha 410073 China. Songshan Lake Materials Laboratory Dongguan 523808 China. Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Normal University Xi'an 710119 China. Hunan Institute of Advanced Sensing and Information Technology Xiangtan University Xiangtan 411105 China State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China. School of Physics and Optoelectronics and Hunan Key Laboratory for Micro-Nano Energy Materials and Devices Xiangtan University Xiangtan 411105 China Hunan Institute of Advanced Sensing and Information Technology Xiangtan University Xiangtan 411105 China. Electronic address: guolinhao@***.

Atomically thin transition-metal dichalcogenide (TMDC) nanostructures are predicted to exhibit novel physical properties that make them attractive candidates for the fabrication of electronic and optoelectronic devices. However, TMDCs tend to grow in the form of two-dimensional nanoplates (NPs) rather than one-dimensional nanoribbons (NRs) due to their native layered structure. Herein, we have developed a space-confined and substrate-directed chemical vapor deposition strategy for the controllable synthesis of WS, WSe, MoSe, MoS, WSSe NPs and NRs. TMDC NRs with lengths ranging from several micrometers to 100 μm have been obtained and the widths of TMDC NRs can be effectively tuned. Moreover, we found that TMDC NRs show different growth behaviors on van der Waals (vdW) and non-vdW substrates. The micro-nano structures, optical and electronic properties of synthesized TMDC NRs have been systematically investigated. This approach provides a general strategy for controllable synthesis of TMDC NRs, which makes these materials easily accessible as functional building blocks for novel optoelectronic devices.

关键词： Chemical vapor deposition Nanoplate Nanoribbon Space-confined and substrate-directed strategy Transition-metal dichalcogenide

来源：评论

学校读者我要写书评

暂无评论

Tensile behavior of Ti-6Al-4V alloy fabricated by selective laser melting: effects of microstructures and as-built surface quality

引用

China Foundry 2018年第4期15卷 243-252页

作者： pan tao huai-xue li bai-ying huang quan-dong hu shui-li gong qing-yan xu Key Laboratory for Advanced Materials Processing Technology（MOE） School of Materials Science and EngineeringTsinghua UniversityBei/ing 100084China Science and Technology on Power Beam Processes Laboratory AVIC MamoCacturing Technology InstituteBei/ing 100024China Key Laboratory of Aeronautical Technology on additive manufacturing A VIC Manufacturing Technology InstituteBeijing 100024China

Selective laser melting （SLM） is a powerful additive manufacturing （AM） technology, of which the most prominent advantage is the ability to produce components with a complex geometry. The service performances of the SLM-processed components depend on the microstructure and surface quality. In this work, the microstructures, mechanical properties, and fracture behaviors of SLM-processed Ti-6AI-4V alloy under machined and as-built surfaces after annealing treatments and hot isostatic pressing （HIP） were investigated. The microstructures were analyzed by optical microscope （OM）, scanning electron microscope （SEM） and transmission electron microscopy （TEM）. The mechanical properties were measured by tensile testing at room temperature. The results indicate that the as-deposited microstructures are characterized by columnar grains and fine brittle martensite and the as- deposited properties present high strength, low ductility and obvious anisotropy. After annealing at 800-900~C for 2-4 h and HIP at 920~C/100MPa for 2 h, the brittle martensite could be transformed into ductile lamellar （a＋~） microstructure and the static tensile properties of SLM-processed Ti-6AI-4V alloys in the machined condition could be comparable to that of wrought materials. Even after HIP treatment, the as-built surfaces could decrease the ductility and reduction of area of SLM-processed fi-6AI-4V alloys to 9.2% and 20%, respectively. The crack initiation could occur at the columnar grain boundaries or at the as-built surfaces. The lamellar （a＋13） microstructures and columnar grains could hinder or distort the crack propagation path during tensile tests.

关键词： selective laser melting Ti-6Al-4V microstructure mechanical properties fracture surface quality

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：