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Molecular Structure Tailoring of Organic Spacers for High‑Performance Ruddlesden–Popper Perovskite Solar Cells

Nano-Micro Letters 2025年第2期17卷 314-357页

作者： Pengyun Liu Xuejin Li Tonghui Cai wei xing Naitao Yang Hamidreza Arandiyan Zongping Shao Shaobin Wang Shaomin Liu School of Materials Science and Engineering State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum(East China)Qingdao 266580People’s Republic of China School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255049People’s Republic of China Centre for Applied Materials and Industrial Chemistry(CAMIC) School of ScienceRMIT UniversityMelbourneVic 3000Australia WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia School of Engineering Great Bay UniversityDongguan 523000People’s Republic of China

Layer-structured Ruddlesden–Popper(RP)perovskites(RPPs)with decent stability have captured the imagination of the photovoltaic research community and bring hope for boosting the development of perovskite solar cell(PSC)***,two-dimensional(2D)or quasi-2D RP PSCs are encountered with some challenges of the large exciton binding energy,blocked charge transport and poor film quality,which restrict their photovoltaic ***,these issues can be readily resolved by rationally designing spacer cations of *** review mainly focuses on how to design the molecular structures of organic spacers and aims to endow RPPs with outstanding photovoltaic *** firstly elucidated the important roles of organic spacers in impacting crystallization kinetics,charge transporting ability and stability of *** we brought three aspects to attention for designing organic ***,we presented the specific molecular structure design strategies for organic spacers of RPPs aiming to improve photovoltaic performance of RP *** proposed strategies in this review will provide new avenues to develop novel organic spacers for RPPs and advance the development of RPP photovoltaic technology for future applications.

关键词： Ruddlesden-Popper perovskites Low-dimensional perovskite solar cells Organic spacers Molecular structure Design strategies

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Parametric Study on the Behavior of An Innovative Subsurface Tension Leg Platform in Ultra-Deep Water

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China Ocean Engineering 2017年第5期31卷 589-597页

作者： ZHEN xing-wei HUANG Yi School of Naval Architecture and Ocean Engineering Dalian University of Technology

This study focuses on a new technology of Subsurface Tension Leg Platform （STLP）, which utilizes the shallow- water rated well completion equipment and technology for the development of large oil and gas fields in ultra-deep water （UDW）. Thus, the STLP concept offers attractive advantages over conventional field development concepts. STLP is basically a pre-installed Subsurface Sea-star Platform （SSP）, which supports rigid risers and shallow-water rated well completion equipment. The paper details the results of the parametric study on the behavior of STLP at a water depth of 3000 m. At first, a general description of the STLP configuration and working principle is introduced. Then, the numerical models for the global analysis of the STLP in waves and current are presented. After that, extensive parametric studies are carried out with regarding to SSP/tethers system analysis, global dynamic analysis and riser interference analysis. Critical points are addressed on the mooring pattern and riser arrangement under the influence of ocean current, to ensure that the requirements on SSP stability and riser interference are well satisfied. Finally, conclusions and discussions are made. The results indicate that STLP is a competitive well and riser solution in up to 3000 m water depth for offshore petroleum production.

关键词： subsurface tension leg platform parametric study global behavior ultra-deep water

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Dynamic structures and their sedimentation effects of the Yamen Inlet,Huangmaohai Estuary

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Science China Earth Sciences 2011年第6期54卷 936-946页

作者： wei xing WU Xiaoxing Key Laboratory of Tropical Marine Environmental Dynamics South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Center for Coastal Ocean Science and Technology Research Sun Yetsen UniversityGuangzhou 510275China South China Sea Marine Prediction Center State Oceanic AdministrationGuangzhou 510300China

One of eight gates of the Pearl River Estuary,the Yamen Inlet is a bedrock channel mouth connecting the Huangmao Sea and Yamen *** wider water surfaces of the upper and lower reaches of the entrance produce a unique bidirectional asymmetrical jet *** observed hydrology and historical charts,the ECOMSED model was applied in morphodynamic analysis of the dynamic structures and dynamic equilibrium of the Yamen jet system and its effect on *** was found that (1) the nonlinear interaction of Yamen dynamic structures could not be ignored,as while the Coriolis force and friction force were generally of the same order of magnitude,the effect of friction force was greater;(2) the bidirectional asymmetrical jet system was flood preferential flow to the north of the channel mouth and ebb preferential flow to the south;and (3) the bidirectional asymmetrical jet system was the dominant factor in the long term stability of the Yamen deep trough.

关键词： Yamen Inlet bidirectional jet dynamic structure dynamic equilibrium sedimentation

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Holocene delta evolution and sequence stratigraphy of the Pearl River Delta in South China

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Science China Earth Sciences 2011年第10期54卷 1523-1541页

作者： wei xing WU ChaoYu State Key Laboratory of Oceanography in the Tropics South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Center for Coastal Ocean Science and Technology Research Sunasen University Guangzhou 510275 China

We analyzed the sedimentary characteristics and chronostratigraphy of the Pearl River Delta in South China, and discussed the Holocene stratigraphic characteristics and the filling process since the Holocene, based on 90 boreholes. Our results showed that the maximum transgressive surface of the Pearl River Delta was located in the soft marine silt horizons, whereas it was shown as an erosion surface in areas with tidal scour. From bottom to top, Holocene sedimentary sequences were fluvial facies, floodplain-estuary facies, and estuary-delta facies in the paleo-valley, while the paleo-interfluve sequences were described as littoral facies, estuary facies, and delta facies. Vertical accumulation sequences of Holocene sediments were shown primarily as positive tapering-shaped sequences with no typical foreset, topset, or other sedimentary sequences of the Gilbert Delta. The paleo-Pearl River estuary had different evolution models in the highstand systems tract (HST) compared with other large deltas worldwide, in that it is dominated by a unique and complex geomorphologic boundary, and that it is a multi-sourced delta compounded by the independent and parallel development of fluvial sedimentary bodies with different scales. A huge estuary was formed in the present Pearl River Delta area when the post-glacial transgression reached maximum at about 6 ka BP. The estuary was divided into two parts by obstruction of a series of islands, an upper part composed of the semi-enclosed inner paleo-bay connected to rivers and a lower part consisting of the outer paleo-bay connected to the ocean. Both of these areas were interlinked by only a few narrows, in which the fluvial sediments are accumulated primarily in the inner paleo-bay. During 6-2 ka BP, the sedimentation in various regions of the inner paleo-bay occurred simultaneously with independent development under the remodeling and transformation effect of complex boundaries on river and ocean dynamics. After 2 ka BP, the evo

关键词： Pearl River Delta Holocene stratigraphic framework delta evolution

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Definition of fine roots on the basis of the root anatomy, diameter,and branch orders of one-year old Fraxinus mandshurica seedlings

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Journal of Forestry Research 2018年第5期29卷 1321-1327页

作者： Xinzhu Du xing wei School of Forestry Northeast Forestry UniversityHarbin 150040 People's Republic of China Northeast Native Tree Species Extension Center Harbin 150040 People's Republic of China

Fine roots are important in root absorption of nutrient and water,and in root *** definition of fine roots is a prerequisite to improved estimation of the physiological and ecological functions of forest *** development and physiological functions are reflections of root anatomical *** this study,the anatomical structures of different root orders were analyzed by examining paraffin sections of one-year old Fraxinus mandshurica ***-year-old *** seedlings had over five root *** root anatomical structures of all orders showed more *** and second order roots consisted of four sections： the epidermis,cortex,pericycle,and vascular *** and fifth order roots were mainly composed of the skin and peripheral vascular bundles（including the xylem and phloem）.Third order roots had root epidermal and cortical structures,but the quantity and integrity of the cortical cells were inferior to those of the first and second order roots,and superior to those of the fourth and fifth order *** the first and second order roots and some third order roots with discontinuous cork layer（〈0.4 mm in diameter）,but not the fourth and fifth order roots,were the fine roots of one-year old *** *** they had similar diameters,different portions of root systems had different anatomical structures and therefore,vary in capacity to absorb water and *** roots were accurately defined by root diameter,branch orders,and anatomical structural features of one-year old *** seedlings.

关键词： Fine root Root order Fraxinus mandshurica Anatomical structure

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Modelling spiky acceleration response of dilative sand deposits during earthquakes with emphasis on large post-liquefaction deformation

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Earthquake Engineering and Engineering Vibration 2018年第1期17卷 125-138页

作者： Wang Gang wei xing John Zhao Key Laboratory of New Technology for Construction of Cities in Mountain Area Chongqing University School of Civil Engineering Chongqing University School of Civil Engineering Southwest Jiaotong University

The acceleration records at some liquefied sand deposits exhibit a distinctive spiky waveform, characterized by strong amplification and high-frequency components. A comprehensive constitutive model was used to analyze the mechanism of such spiky acceleration responses. An idealized single-degree-of-freedom（SDF） system was constructed, in which the force-displacement relation of the spring follows the stress-strain behavior of saturated sand during undrained shearing. The SDF system demonstrated that the spikes are directly related to the strain-hardening behavior of sand during post-liquefaction cyclic shearing. Furthermore, there exists a threshold shear strain length, which is in accordance with the limited amplitude of the fluid-like shear strain generated at instantaneous zero effective stress state during the post-liquefaction stage. The spiky acceleration can only occur when the cyclic shear strain exceeds the threshold shear strain length. It is also revealed that the time intervals between the acceleration spikes increase gradually along with the continuation of shaking because the threshold shear strain length increases gradually and then more time is needed to generate larger shear strain to cause strain hardening. Records at the Kushiro Port site and Port Island site during past earthquakes are simulated through the fully coupled method to validate the presented mechanism.

关键词： spiky acceleration cyclic mobility post-liquefaction seismic response sand

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FABRICATION AND PROPERTIES OF ANTIFERROELECTRIC RAINBOW ACTUATOR

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Chinese Journal of Mechanical Engineering 2006年第1期19卷 116-119页

作者： SHEN xing FENG wei College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

A new type of large-displacement actuator called reduced and internally biased oxide wafer （RAINBOW） is fabricated by chemical reduction of Pb（Sn, Zr, Ti）O3（PSZT） antiferroelectric ceramics and its properties are investigated. It is found that PSZT is easily reduced and the optimal conditions for producing RAINBOW samples are determined to be 870 ℃ for 2-3 h. The antiferroelectrics-ferroelectrics phase transitions occur at lower field strength in RAINBOW actuators compared with normal PSZT actuators. Large axial displacements are also obtained from the RAINBOW actuator by application of electric fields exceeding the phase switching level. However, the field-induced displacement of the RAINBOW actuator is dependent on the manner of applying load on the samples.

关键词： Actuator Reduction Antiferroelectric ceramic Phase switching

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Phase thermal stability and mechanical properties analyses of(Cr,Fe,V)–(Ta,W)multiple-based elemental system using a compositional gradient film

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International Journal of Minerals,Metallurgy and Materials 2020年第10期27卷 1379-1387页

作者： Qiu-wei xing Jiang Ma Yong Zhang Beijing Advanced Innovation Center of Materials Genome Engineering State Key Laboratory of Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China

High-entropy alloys(HEAs)generally possess complex component combinations and abnormal *** traditional methods of investigating these alloys are becoming increasingly inefficient because of the unpredictable phase transformation and the combination of many *** development of compositionally complex materials such as HEAs requires high-throughput experimental methods,which involves preparing many samples in a short *** we apply the high-throughput method to investigate the phase evolution and mechanical properties of novel HEA film with the compositional gradient of(Cr,Fe,V)-(Ta,W).First,we deposited the compositional gradient film by ***,the mechanical properties and thermal stability of the(Cr0.33Fe0.33V0.33)x(Ta0.5W0.5)100−x(x=13-82)multiplebased-elemental(MBE)alloys were *** the deposited wafer was annealed at 600℃for 0.5 h,the initial amorphous phase was transformed into a body-centered cubic(bcc)structure phase when x=*** were observed on the film surface when x was 72 and ***,the highest hardness of as-deposited films was found when x=18,and the maximum hardness of annealed films was found when x=33.

关键词： high-throughput fabrication hard coating thermal resistance mechanical property phase stability high-entropy alloys

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Causality Analysis of Futures Sugar Prices in Zhengzhou Based on Graphical Models for Multivariate Time Series

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Acta Mathematicae Applicatae Sinica 2016年第1期32卷 129-136页

作者： Jing XU xing-wei TONG School of Statistics University of International Business and Economics School of Statistics Beijing Normal University

This paper presents a method of constructing a mixed graph which can be used to analyze the causality for multivariate time *** construct a partial correlation graph at first which is an undirected *** every undirected edge in the partial correlation graph,the measures of linear feedback between two time series can help us decide its direction,then we obtain the mixed *** this method,we construct a mixed graph for futures sugar prices in Zhengzhou（ZF）,spot sugar prices in Zhengzhou（ZS） and futures sugar prices in New York（NF）.The result shows that there is a bi-directional causality between ZF and ZS,an unidirectional causality from NF to ZF,but no causality between NF and ZS.

关键词： causality partial spectral coherence partial correlation graph linear feedback mixed graph

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Formic acid electro-oxidation:Mechanism and electrocatalysts design

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Nano Research 2023年第3期16卷 3607-3621页

作者： Tongtong Yang Shuai Hou Jiaojiao xing Changpeng Liu Junjie Ge wei xing State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Chinese Academy of Sciences Beijing 100039China

As a model reaction for the electrooxidation of many small organic molecules,formic acid electrooxidation(FAEO)has aroused wide *** promises of direct formic acid fuel cells(DFAFC)in application further strengthen people’s attention to the related ***,despite decades of study,the FAEO mechanism is still under debate due to the multi-electron and multi-pathway nature of the catalytic *** this review,the progresses towards understanding the FAEO mechanism along with the developed methodology(electrochemistry,in-situ spectroscopy,and theoretical calculation and simulation)are *** especially focused on the construction of anti-poisoning catalysts system based on understanding of the catalytic mechanism,with anti-poisoning catalyst design being systemically ***,we provide a brief summarization for current challenges and future prospects towards FAEO study.

关键词： formic acid electrooxidation mechanism anti-poisoning methodology in-situ technique electrocatalysts design

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