检索结果-内蒙古大学图书馆

InP/ZnS core/shell quantum dots: Synthesis, characterization and their application in fullerene derivative based flexible solar cells

引用

Results in physics 2025年 69卷

作者： Zhichu, Chen Tahir, Muhammad Muhammad, Fida Aziz, Fakhra Ayub, Ambreen Badshah, Fazal Refat, Moamen S. Cakmak, Sadiye M. Rehan, Shanza Adam, Abdel Majid A. Alsuhaibani, Amnah Mohammed Ayob, Afida Sarker, Mahidur R Khan, Adam School of Electrical and Information Engineering Hubei University of Automotive Technology Shiyan 442002 China Semiconductor Physics & Devices Laboratory Department of Physics Faculty of Physical and Numerical Sciences Abdul Wali Khan University Mardan 23200 Pakistan Department of Electronics University of Peshawar KP Pakistan Department of Physics Women University Mardan KP 23200 Pakistan Department of Chemistry College of Science Taif University P.O. Box 11099 Taif 21944 Saudi Arabia Program of Medical Monitoring Techniques Osmangazi University Eskisehir Eskisehir 26040 Turkey Faculty of Materials and Chemical Engineering GIK Institute of Engineering Sciences and Technology Topi 23640 Pakistan Department of Physical Sport Sciences College of Sport Sciences & Physical Activity Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia Centre for Integrated Systems Engineering and Advanced Technologies (INTEGRA) Department of Electrical Electronic and Systems Engineering Universiti Kebangsaan Malaysia Bangi 43600 Malaysia Institute of Visual Informatics Universiti Kebangsaan Selangor Malaysia Bangi 43600 Malaysia Universidad de Diseno Innovacion y Tecnología UDIT Av. Alfonso XIII 97 Madrid 28016 Spain Department of Electronics Engineering University of Engineering & Technology Peshawar (Abbottabad Campus) Abbottabad Pakistan

Herein, we report on the synthesis and characterization of p-type semiconductor indium phosphide/zinc sulphide (InP/ZnS) core/shell quantum dots (QDs) prepared via a simple solvothermal method and their potential application in bulk heterojunction (BHJ) flexible solar cell (SC). The BHJ SC composed of donor–acceptor (D-A) configuration at nanoscale provides larger interfacial junction area throughout the bulk volume of the photo-absorber D-A blend that facilitates excitons to efficiently dissociate within the bulk layer at D-A interface. Hence, InP/ZnS core–shell QDs and a fullerene derivative – phenyl C61 butyric acid methyl ester (PCBM) – are used as hybrid inorganic–organic D-A materials, respectively, to fabricate Ag/LiF/InP/ZnS-PCBM/P3HT/ITO/PET BHJ flexible SC. Indium tin oxide (ITO) coated on polyethylene terephthalate (PET), poly(3-hexylthiophene) (P3HT), lithium fluoride (LiF) and silver (Ag) are employed as a flexible substrate, hole transport layer (HTL), electron transport layer (ETL) and counter electrode, respectively. Photovoltaic (PV) properties of the fabricated BHJ flexible SC are studied under standard testing conditions (STC) i.e., 25 ⁰C, 1.5 AM global and 100 mW/cm² irradiation, which exhibit fill factor (FF) of 59 ± 0.02 % and power conversion efficiency (PCE) of 4.22 ± 0.05 %. Also, the heterojunction characteristics are investigated in dark condition (0 lx) to find series resistance (R_s), ideality factor (n), and reverse saturation current (I₀). X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and ultraviolet–visible (UV–vis) spectroscopy are performed to further investigate the properties of InP/ZnS-PCBM thin films. Transmission electron microscopy (TEM) image of InP/ZnS core/shell QDs confirmed the successful synthesis of QDs having an average size of 5 ± 1 nm. The InP/ZnS-PCBM D-A photo-absorber layer reveals its potential as one of good candidates for hi

关键词： Flexible solar cell Hybrid bulk heterojunction (BHJ) InP/ZnS core/shell QDs Power conversion efficiency (PCE) Quantum dots (QDs) synthesis

来源：评论

学校读者我要写书评

暂无评论

Visualization of Tunable Weyl Line in A–A Stacking Kagome Magnets

引用

Advanced Materials 2023年第3期35卷 e2205927页

作者： Cheng, Zi-Jia Belopolski, Ilya Tien, Hung-Ju Cochran, Tyler A. Yang, Xian P. Ma, Wenlong Yin, Jia-Xin Chen, Dong Zhang, Junyi Jozwiak, Chris Bostwick, Aaron Rotenberg, Eli Cheng, Guangming Hossain, Md. Shafayat Zhang, Qi Litskevich, Maksim Jiang, Yu-Xiao Yao, Nan Schroeter, Niels B. M. Strocov, Vladimir N. Lian, Biao Felser, Claudia Chang, Guoqing Jia, Shuang Chang, Tay-Rong Hasan, M. Zahid Department of Physics Princeton University PrincetonNJ08544 United States Department of Physics National Cheng Kung University Tainan70101 Taiwan International Center for Quantum Materials School of Physics Peking University Beijing100871 China Max Planck Institute for Chemical Physics of Solids Dresden01187 Germany Department of Physics Princeton University PrincetonNJ08544 United States Advanced Light Source E. O. Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Princeton Institute for Science and Technology of Materials Princeton University PrincetonNJ08544 United States Swiss Light Source Paul Scherrer Institute Villigen5232 Switzerland Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore637371 Singapore Tainan701 Taiwan Physics Division National Center for Theoretical Sciences Taipei10617 Taiwan Lawrence Berkeley National Laboratory BerkeleyCA94720 United States

Kagome magnets provide a fascinating platform for a plethora of topological quantum phenomena, in which the delicate interplay between frustrated crystal structure, magnetization, and spin–orbit coupling (SOC) can engender highly tunable topological states. Here, utilizing angle-resolved photoemission spectroscopy, the Weyl lines are directly visualized with strong out-of-plane dispersion in the A–A stacked kagome magnet GdMn6Sn6. Remarkably, the Weyl lines exhibit a strong magnetization-direction-tunable SOC gap and binding energy tunability after substituting Gd with Tb and Li, respectively. These results not only illustrate the magnetization direction and valence counting as efficient tuning knobs for realizing and controlling distinct 3D topological phases, but also demonstrate AMn6Sn6 (A = rare earth, or Li, Mg, or Ca) as a versatile material family for exploring diverse emergent topological quantum responses. © 2022 Wiley-VCH GmbH.

关键词： Magnetization

来源：评论

学校读者我要写书评

暂无评论

Higher order topological matter and fractional chiral states

arXiv

引用

arXiv 2022年

作者： Drissi, Lalla Btissam Lounis, S. Saidi, E.H. LPHE Modeling & Simulations Faculty of Science Mohammed V University in Rabat Morocco Morocco Peter Grünberg Institut Institute for Advanced Simulation Forschungszentrum Jülich & JARA Germany CPM Centre of Physics and Mathematics Faculty of Science Mohammed V University in Rabat Morocco College of Physical and Chemical Sciences Hassan II Academy of Sciences and Technology Km 4 Avenue Mohammed VI Rabat Morocco

We develop a chiral anomalous fermion hamiltonian proposal to study the higher order topological (HOT) phase with chiral symmetry C fractionalized like CxCyCz. First, we solve the C-chiral symmetry constraint for eight band models and describe those induced by the partial Ci’s. Then, we determine the explicit expression of fractional states characterising HOT matter and comment on the relationships amongst them and with the standard Altland-Zirnbauer gapless modes. We also give characteristic properties of the gapless fractional states and compute their contribution to the topological index of the chiral model. The findings of this work are shown to be crucial for investigating and handling high order topological phase. © 2022, CC BY.

关键词： Hamiltonians

来源：评论

学校读者我要写书评

暂无评论

Facile Li-Ion Transport via LLTO Scaffold with Crosslinked Polyethylene Glycol Composite Electrolyte for Solid-State Batteries

SSRN

引用

SSRN 2025年

作者： Lee, Jungkuk Counihan, Michael J. Barai, Pallab Burns, Meghan E. Singh, Vibhu V. Jamnuch, Sasawat Pascal, Tod A. Shrinivasan, Venkat Tepavcevic, Sanja Zhang, Yuepeng Applied Materials Division Argonne National Laboratory LemontIL60439 United States Materials Science Division Argonne National Laboratory LemontIL60439 United States Department of Chemistry University of Illinois Chicago ChicagoIL60607 United States ATLAS Materials Physics Lab Aiiso Yufeng Li Family Department of Chemical and Nano Engineering University of California San Diego La Jolla CA92093 United States Microscopy and Microanalysis Research Group Materials Measurement Science Division National Institute of Standards and Technology GaithersburgMD20899 United States Material Science and Engineering Program University of California San Diego La Jolla CA92093 United States Chemical Sciences and Engineering Division Argonne National Laboratory LemontIL60439 United States

Composite polymer electrolytes (CPEs) hold significant promise for solid-state batteries due to their ability to combine the benefits of inorganic fillers and polymer matrices. However, agglomeration of inorganic fillers can disrupt the formation of a percolation pathway, hindering lithium-ion transport. Here, we developed a stable, porous, and interconnected 3-dimentional LLTO (Li0.33La0.557TiO3) nanofiber scaffold and fabricate CPEs using in-situ crosslinked polyethylene glycol (xPEG). The resulting self-standing LLTOxPEG-65 achieved an ionic conductivity of 5.0 × 10−4 S/cm at 30 °C and a critical current density of 0.5 mA/cm2. A significantly lower activation energy (~0.2 eV) was observed in LLTOxPEG-65 compared to pristine xPEG (0.44 eV), indicating a transition of lithium-ion transport pathways from xPEG to the LLTO scaffold. However, increasing the xPEG content led to a decrease in ionic conductivity and a rise in activation energy, approaching that of pristine xPEG. DFT calculations revealed that Li+ transport in the [010] and [001] planes of LLTO predominantly takes place within the bulk rather than along the surface, while a concerted diffusion mechanism was observed in the [100] plane. Additionally, mesoscale-level computational analysis indicated that the high LLTO scaffold fraction (90 wt %) can ensure transport through the bulk of the fibers even with larger interfacial charge transfer resistance, around 1 Ω·cm2 between LLTO and xPEG. Presence of the highly percolated LLTO scaffold helps to promote efficient Li+ transport through the bulk of LLTO. © 2025, The Authors. All rights reserved.

关键词： Activation energy

来源：评论

学校读者我要写书评

暂无评论

Néel Spin Currents in Antiferromagnets

arXiv

引用

arXiv 2022年

作者： Shao, Ding-Fu Jiang, Yuan-Yuan Ding, Jun Zhang, Shu-Hui Wang, Zi-An Xiao, Rui-Chun Gurung, Gautam Lu, W.J. Sun, Y.P. Tsymbal, Evgeny Y. Key Laboratory of Materials Physics Institute of Solid State Physics HFIPS Chinese Academy of Sciences Hefei230031 China University of Science and Technology of China Hefei230026 China College of Science Henan University of Engineering Zhengzhou451191 China College of Mathematics and Physics Beijing University of Chemical Technology Beijing100029 China Institute of Physical Science and Information Technology Anhui University Hefei230601 China Trinity College University of Oxford OX1 3BH United Kingdom High Magnetic Field Laboratory HFIPS Chinese Academy of Sciences Hefei230031 China Collaborative Innovation Center of Microstructures Nanjing University Nanjing210093 China Department of Physics and Astronomy Nebraska Center for Materials and Nanoscience University of Nebraska LincolnNE68588-0299 United States

Ferromagnets are known to support spin-polarized currents that control various spin-dependent transport phenomena useful for spintronics. On the contrary, fully compensated antiferromagnets are expected to support only globally spin-neutral currents. Here, we demonstrate that these globally spin-neutral currents can represent the Néel spin currents, i.e. staggered spin currents flowing through different magnetic sublattices. The Néel spin currents emerge in antiferromagnets with strong intra-sublattice coupling (hopping) and drive the spin-dependent transport phenomena such as tunneling magnetoresistance (TMR) and spin-transfer torque (STT) in antiferromagnetic tunnel junctions (AFMTJs). Using RuO2 and Fe4GeTe2 as representative antiferromagnets, we predict that the Néel spin currents with a strong staggered spin-polarization produce a sizable field-like STT capable of the deterministic switching of the Néel vector in the associated AFMTJs. Our work uncovers the previously unexplored potential of fully compensated antiferromagnets and paves a new route to realize the efficient writing and reading of information for antiferromagnetic spintronics. Copyright © 2022, The Authors. All rights reserved.

关键词： Tunnel junctions

来源：评论

学校读者我要写书评

暂无评论

Facile defect construction of TiO₂ nanotube for excellent photocatalytic degradation of tetracycline under visible light

引用

Journal of Photochemistry and Photobiology A: Chemistry 2023年第0期437卷 000-000页

作者： Wang, Chu Liu, Yuanxu Li, Yangyang Sun, Xiao Xu, Leiming Huang, Weixin Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application Engineering Technology Research Center of Modernized Pharmaceutics Anhui Education Department (AUCM) Institute of Pharmaceutics Anhui Academy of Chinese Medicine and School of Pharmacy Anhui University of Chinese Medicine Hefei 230012 China Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes and Department of Chemical Physics University of Science and Technology of China Hefei 230026 China Anhui Institute for Food and Drug Control Hefei 230051 China

Developing facile fabricating cheap photocatalyst with high activity is a promising strategy for the degradation of tetracycline. Herein, we report that the well-designed photocatalysts with optimal activity and stability prepared via facile Ar atmosphere calcination with H-titanate nanotubes as precursors. The excellent visible light behavior is attribute to suitable oxygen vacancies (Ti³⁺ sites) acted as charge carrier traps so as to accelerate the separation of the photogenerated electrons and holes and favorable for the photocatalytic reaction. Significantly, the photocatalyst exhibited repeatedly activity without degradation in the cyclic stability experiment attributed to the highly stable of oxygen vacancies (Ti³⁺ sites) in water or air under visible light illumination. The excellent photocatalytic efficiency for TC degradation exhibited both h⁺ and ⋅O₂^– were significant active species under visible light irradiation. These findings promote a facile method to construct efficient photocatalyst for TC degradation with defect-mediated strategy. © 2022 Elsevier B.V.

关键词： Defect Photocatalytic degradation Tetracycline Titania Visible light

来源：评论

学校读者我要写书评

暂无评论

Disentangling the Effects of Structure and Lone-Pair Electrons in the Lattice Dynamics of Halide Perovskites

arXiv

引用

arXiv 2023年

作者： Caicedo-Dávila, Sebastián Cohen, Adi Motti, Silvia G. Isobe, Masahiko McCall, Kyle M. Grumet, Manuel Kovalenko, Maksym V. Yaffe, Omer Herz, Laura M. Fabini, Douglas H. Egger, David A. Physics Department TUM School of Natural Sciences Technical University of Munich Garching85748 Germany Department of Chemical and Biological Physics Weizmann Institute of Science Rehovot76100 Israel Clarendon Laboratory Department of Physics University of Oxford Parks Road OxfordOX1 3PU United Kingdom School of Physics and Astronomy Faculty of Engineering and Physical Sciences University of Southampton University Road SouthamptonSO17 1BJ United Kingdom Max Planck Institute for Solid State Research Stuttgart70569 Germany Laboratory of Inorganic Chemistry Department of Chemistry and Applied Biosciences ETH Zurich ZürichCH-8093 Switzerland Laboratory for Thin Films and Photovoltaics EMPA - Swiss National Laboratories for Materials and Technology DübendorfCH-8600 Switzerland TUM Institute for Advanced Study Technische Universität München Garching85748 Germany Department of Chemistry Massachusetts Institute of Technology CambridgeMA02139 United States

Metal halide perovskites have shown great performance as solar energy materials, but their outstanding optoelectronic properties are paired with unusually strong anharmonic effects. It has been proposed that this intriguing combination of properties derives from the "lone pair" 6s2 electron configuration of the Pb2+ cations, and associated weak pseudo-Jahn–Teller effect, but the precise impact of this chemical feature remains unclear. Here we show that in fact an ns2 electron configuration is not a prerequisite for the strong anharmonicity and low-energy lattice dynamics encountered in this class of materials. We combine X-ray diffraction, infrared and Raman spectroscopies, and first-principles molecular dynamics calculations to directly contrast the lattice dynamics of CsSrBr3 with those of CsPbBr3, two compounds which bear close structural similarity but with the former lacking the propensity to form lone pairs on the 5s0 octahedral cation. We exploit low-frequency diffusive Raman scattering, nominally symmetry-forbidden in the cubic phase, as a fingerprint to detect anharmonicity and reveal that low-frequency tilting occurs irrespective of octahedral cation electron configuration. This work highlights the key role of structure in perovskite lattice dynamics, providing important design rules for the emerging class of soft perovskite semiconductors for optoelectronic and light-harvesting devices. © 2023, CC BY.

关键词： Cesium compounds

来源：评论

学校读者我要写书评

暂无评论

Manipulation of Molecular Qubits by Isotope Effect on Spin Dynamics

引用

CCS Chemistry 2021年第9期3卷 2548-2556页

作者： Jing Li Shi-Jie Xiong Chun Li Biaobing Jin Yi-Quan Zhang Shang-Da Jiang Zhong-Wen Ouyang Zhenxing Wang Xing-Long Wu Johan van Tol You Song State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023 National Laboratory of Solid State Microstructures Department of PhysicsNanjing UniversityNanjing 210093 Research Institute of Superconductor Electronics(RISE) School of Electronic Science and EngineeringNanjing UniversityNanjing 210093 Jiangsu Key Laboratory for NSLSCS School of Physical Science and TechnologyNanjing Normal UniversityNanjing 210023 National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsBeijing Key Laboratory for Magnetoelectric Materials and DevicesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 Wuhan National High Magnetic Field Center&School of Physics Huazhong University of Science and TechnologyWuhan 430074 National High Magnetic Field Laboratory Florida State UniversityTallahasseeFL 32310

Controlling spin behavior via external stimuli is a key route to develop molecular spintronics ***,temperature,pressure,chemicals,and electric field are the possible ***,we report a new method,the isotope effect,to control spin behavior in molecule magnet *** can not only control the relaxation of magnetization,but also regulate the spin lifetime of quantum coherence.

关键词： molecule-based magnetism molecular qubits isotope effect spin–vibration coupling quantum coherence

来源：评论

学校读者我要写书评

暂无评论

NiOx passivation in perovskite solar cells: from surface reactivity to device performance

arXiv

引用

arXiv 2024年

作者： Mohanraj, John Samanta, Bipasa Almora, Osbel Escalante, Renán Marsal, Lluis F. Jenatsch, Sandra Gadola, Arno Ruhstaller, Beat Anta, Juan A. Toroker, Maytal Caspary Olthof, Selina Department of Chemistry University of Cologne Greinstrasse 4−6 Cologne50939 Germany Department of Materials Science and Engineering Technion–Israel Institute of Technology Haifa3600003 Israel Departament d'Enginyeria Electrònica Elèctrica i Automàtica Universitat Rovira i Virgili Tarragona43007 Spain Department of Physical Chemical and Natural Systems Universidad Pablo de Olavide Sevilla41013 Spain Fluxim AG Katharina-Sulzer-Platz 2 Winterthur8400 Switzerland The Nancy and Stephen Grand Technion Energy Program Haifa3200003 Israel

Non-stoichiometric nickel oxide (NiOx) is the only metal oxide successfully used as hole transport material in p-i-n type perovskite solar cells (PSCs). Its favorable opto-electronic properties and facile large-scale preparation methods are potentially relevant for future commercialization of PSCs, though currently low operational stability of PSCs containing NiOx hole transport layers are reported. Poorly understood degradation reactions at the interface to the perovskite are seen as cause for the inferior stability and a variety of interface passivation approaches have been shown to be effective in improving the overall solar cell performance. To gain a better understanding of the processes happening at this interface, we systematically passivated possible specific defects on NiOx with three different categories of organic/inorganic compounds. The effects on the NiOx and the perovskite (MAPbI3) were investigated using x-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM) where we find that the structural stability and film formation can be significantly affected. In combination with Density Functional Theory (DFT) calculations, a likely origin of NiOx-perovskite degradation interactions is proposed. The surface passivated NiOx was incorporated into MAPbI3 based PSCs and its influence on overall performance, particularly operational stability, was investigated by current-voltage (J-V), impedance spectroscopy (IS), and open circuit voltage decay (OCVD) measurements. Interestingly, we find that a superior structural stability due to an interface passivation must not relate to high operational stability. The discrepancy comes from the formation of excess ions at the interface which negatively impacts all solar cell parameters. © 2024, CC BY-NC-SA.

关键词： Nickel oxide

来源：评论

学校读者我要写书评

暂无评论

BPS2025 - Improving the force field for lipid interactions with calcium and beryllium

引用

Biophysical Journal 2025年第3期124卷 153a-153a页

作者： Jessica Bodosa Sergei I. Sukharev Jeffery B. Klauda Biophysics Program University of Maryland College Park College Park MD USA Department of Biology and Institute for Physical Science and Technology University of Maryland College Park MD USA Department of Chemical and Biomolecular Engineering University of Maryland College Park MD USA

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：