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Science China Chemistry 2024年第7期67卷 2335-2340页

作者： Yazhou Xu Zhaoyang Chu Hongyu Wang Zhi Xing baojin fan Xiaotian Hu Yiwang Chen College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC)/Film Energy Chemistry for Jiangxi Provincial Key Laboratory(FEC) Nanchang UniversityNanchang 330031China Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal University Nanchang 330022China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China

Currently,highly efficient n-i-p perovskite solar cells rely on an organic interface layer for high efficiency,especially 2,2',7,7'-tetrakis[N,N-bis(4-methoxyphenyl)ami-no]-9,9′-spirobifluorene(spiro-OMeTAD),but the instability of organic materials in the photothermal field compromises device *** this study,we employ the oleic acid(YS)/oleamine(YA)end-sealing method to achieve uniform dispersion of NiO_(X)nanoparticles,effectively mitigating coagulation resulting from high local concentration and secondary motion ***,the conductivity of the hole transport layer and its energy level alignment with perovskite is enhanced by the additional 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanodimethyl-p-benzoquinone(F4TCNQ),leading to a remarkable improvement of open-circuit voltage and fill factor,thus the high efficiency of 25.17%and 24.36%on 0.1 and 1.01cm2,***,by realizing an all-inorganic interface layer,an initial efficiency exceeding 90%is maintained even after 2,800 h of heating at 85℃.

关键词： oil-NiO_(X) perovskite solar cells printing technology high efficiency thermal stability

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Atmospheric stable and fexible Sn-based perovskite solar cells via a bioinspired antioxidative crystal template

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Journal of Energy Chemistry 2022年第3期31卷 612-618,I0016页

作者： Rui Guo Li Rao Qianjin Liu Hongyu Wang Chenxiang Gong baojin fan Zhi Xing Xiangchuan Meng Xiaotian Hu School of Materials Science and Engineering Nanchang University999 Xuefu AvenueNanchang 330031JiangxiChina School of Future Technology Nanchang University999 Xuefu AvenueNanchang 330031JiangxiChina Institute of Polymers and Energy Chemistry Nanchang University999 Xuefu AvenueNanchang 330031JiangxiChina

Sn-based perovskite solar cells(PSCs)demonstrate a potential development in eco-friendly devices due to their ***,poor stability and crystalline quality are still the challenges for achieving high-performance and long-term operating *** this work,inspired by biological protein,nickelporphyrin(Ni-P)with electron cloud on conjugate ring is applied into Sn-based perovskite to prevent perovskite from being *** synergistic effect of water and oxygen is broken in grain boundaries and surface so that the stability of PSCs can be improved obviously,despite there is hardly any barrier for water to ***,the electron-rich molecules can passivate the defects of perovskite such as iodine ***,the ester group in Ni-P molecule can bind with SnI;to form complex and then restrain *** with the template effect of 2D molecular,the crystallization of perovskite films is ***,the Sn-based PSCs with Ni-P achieve a stabilized power conversion efficiency(PCE)of 7.79%with negligible hysteresis in fexible devices,***,the PSCs can maintain 80%of the pristine PCE after 300 h under air environment.

关键词： Lead-free Solar cell Flexible devices Molecular bionics Crystallization control

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A shape memory scaffold for body temperature self-repairing wearable perovskite solar cells with efficiency exceeding 21%

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InfoMat 2022年第12期4卷 74-84页

作者： Tangyue Xue Zengqi Huang Pei Zhang Meng Su Xiaotian Hu Tingqing Wu baojin fan Gangshu Chen Guanghui Yu Wentao Liu Xuying Liu Yiqiang Zhang Yanlin Song School of Materials Science and Engineering Zhengzhou UniversityZhengzhouPeople's Republic of China Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences(ICCAS)BeijingPeople's Republic of China Institute of Polymers and Energy Chemistry Nanchang UniversityNanchangPeople's Republic of China College of Chemistry Zhengzhou UniversityZhengzhouPeople's Republic of China

Grain boundary cracks in flexible perovskite films can be repaired by filling with self-repairing polymers during the preparation and wearable ***,the self-repairing polymers are commonly active through external heating or humidification treatments,which cannot match with the human body's temperature tolerance of wearable ***,a body temperature-responsive shape memory polyurethane(SMPU)is demonstrated to achieve the real-time mechanical self-repairing of grain boundary cracks(~37°C).Furthermore,the strong intermolecular interaction between SMPU and the uncoordinated Pb2+and I−,can reduce the trap density in perovskite *** blade-coated device achieves a power conversion efficiency(PCE)of 21.33%,which is among the best reported flexible perovskite solar cells(PSCs;0.10 cm2).Importantly,the device with SMPU can recover more than 80%of the PCE after 6000 cycles(bending radius:8 mm).Finally,the flexible PSCs are used for wearable solar power supply of a smartphone,which show great potential for self-repairing wearable electronics.

关键词： grain boundary mechanical stability perovskite self-repairing function shape memory polyurethane

Inverted Planar Heterojunction Perovskite Solar Cells based on IT-like Non-fullerene materials

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Inverted Planar Heterojunction Perovskite Solar Cells based ...

Air-Retreatment Strategy for Efficient Inverted Perovskite Solar Cells

第六届新型太阳能电池材料科学与技术学术研讨会

作者： baojin fan Qian Zhan Zhongjun Dai Jian Xiong Guangxi Key Laboratory of Information Materials School of Materials Science and EngineeringGuilin University of Electronic Technology

Electron transport materials play a significant role in enhancing the power conversion efficiency(PCE) of perovskite solar cells(PSCs) for passivating trap state around the surface of perovskite film and grain boundaries, decreasing charge recombination and facilitating carrier transportation[1-3]. Non-fullerene acceptor materials(NFEAs) as new electron transport material have been widely utilized in PSCs[4]. Recently, we introduced three kind of IT-like NFEAs(ITIC, ITIC-Th, IT-M) into inverted planar heterojunction PSCs. The champion device yields a high efficiency of 14.29%, which was fabricated based on ITIC. Furthermore, all devices based on NFEAs show negligible hysteresis and extremely fast electron extraction compared to that based on PCBM. Meanwhile, some physics parameters, such as ideal factor(A), series resistance(R), reverse saturated current density(J), were furtherly certify an adaptation and tremendous potential for incorporating non-fullerene acceptor to inverted PHJPSCs. Subsequently, increasing effort is essential for improvement of non-fullerene based PSCs.

关键词： non-fullerene acceptor material negligible hysteresis inverted perovskite solar cells

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Air-Retreatment Strategy for Efficient Inverted Perovskite S...

Tackling the microlensing wave effects of strong lensing gravitational waves with TAAH

第七届新型太阳能电池材料科学与技术学术研讨会

作者： Zhongjun Dai Weizhi Liu baojin fan Jian Xiong Guangxi Key Laboratory of Information Materials School of Materials Science and EngineeringGuilin University of Electronic Technology

Large grain will benefit to get less grain boundary,lower trap states density,which will benefit to the performance of perovskite solar cells(PSCs).Solvent annealing(with DMF or DMSO) have been widely used to increase the grain size of ***,there are still several challenges in controlling the solvent atmosphere because their strong polar property may destroy the perovskite ***,a simple air-retreatment strategy is proposed to improve the performance of inverted *** strategy can facilitate second growth of the MAPbI grains and the average size of 3.91 μm and the largest grain size exceeding 9 μm are achieved and the corresponding trap states density is reduced from 4.05×10 cm to 1.60×10 *** from the quality enhancement of the perovskite film,the high PCE of 18.44% with negligible hysteresis(HI<1%) are achieved in our inverted ***,this air-retreatment strategy has great potential in the large-scale,low-temperature preparation of efficient and stable PSCs.

关键词： air-retreatment trap states large grain size perovskite solar cells

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 257-258页

作者： Zuhui fan South-Western Institute for Astronomy Research Yunnan University

The rapid development of gravitational wave（GW） observations since their first detection in 2015 [1] has opened a completely new window for exploring the Universe. Consequently, astronomical research has entered the multimessenger era, allowing us to use different tracers to view the cosmos from various perspectives. Among others, the appealing application of gravitational wave events from compact binary mergers is that they can act as standard sirens to determine absolute cosmic distances entirely independent of standard candles. This approach is one of the most promising means to solve the current H0tension problem.

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Soluble epoxide hydrolase:a next-generation drug target for Alzheimer's disease and related dementias

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Neural Regeneration Research 2025年第9期20卷 2585-2586页

作者： Andrew Gregory Chengyun Tang fan fan Department of Physiology Medical College of GeorgiaAugusta UniversityAugustaGAUSA

Alzheimer's disease(AD)and Alzheimer's diseaserelated dementias(ADRD)represent a significant public health challenge,with projections indicating a substantial increase in affected individuals due to the aging global *** the World Health Organization,AD/ADRD has affected more than 55 million individuals worldwide,with an additional 10 million cases diagnosed each year.

关键词： Alzheimer population drug

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Reconstructing forest and grassland cover changes in China over the past millennium

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Science China Earth Sciences 2025年第1期68卷 94-110页

作者： fanneng HE fan YANG Yafei WANG Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Key Research Institute of Yellow River Civilization and Sustainable Development Henan University University of Chinese Academy of Sciences

Historical forest and grassland cover changes not only are critical indicators for quantifying ecological and environmental change processes but also serve as fundamental data for long-term climate change simulations and terrestrial ecosystem carbon emission assessments. However, because of limitations in historical data, quantitative estimations and spatially gridded reconstructions of these changes remain challenging, necessitating further methodological exploration. This study focused on China's present-day land area over the past millennium, objectively capturing the characteristics and drivers of forest and grassland cover changes. On this basis, using the forest transition theory and the space-for-time substitution method, we depicted the historical deforestation process as an inverted “S” curve and developed a model to reconstruct historical forest area changes based on the functional relationship between the forest area and population size dynamics. Subsequently, a gridded forest allocation model was established on the basis of deforestation tendencies. For the grassland cover, we implemented regionspecific methods, such as the cropland area deduction method and the habitat constraint method, to quantitatively reconstruct historical changes. Consequently, we obtained provincial forest and grassland area changes over the past millennium and mapped 10-km-resolution gridded data of forest and grassland cover. The results indicated the following.(1) The methods developed using population data as a proxy objectively reproduced the spatiotemporal evolution of forest and grassland cover in China over the past millennium. These feasible methods offer a novel pathway for the quantitative reconstruction of historical forest and grassland cover changes.(2) The data indicated that China's forest area generally decreased over the past millennium, characterized by a “decrease-then-increase” pattern. The forest area experienced three distinct phases: a slow decline(AD 1000

关键词： Land use and land cover change Forest Grassland Quantitative reconstruction Gridded reconstruction China historical period

Dynamic behaviors of graphene platelets-reinforced metal foam piezoelectric beams with velocity feedback control

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 63-80页

作者： Jie CHEN Xinyue ZHANG Mingyang fan School of Mathematics Statistics and Mechanics Beijing University of Technology College of Mechanical & Energy Engineering Beijing University of Technology

Graphene platelets(GPLs)-reinforced metal foam structures enhance the mechanical properties while maintaining the lightweight characteristics of metal foams. Further bonding piezoelectric actuator and sensor layers on the surfaces of GPLs-reinforced metal foam beams enables active vibration control, greatly expanding their applications in the aerospace industry. For the first time, this paper investigates the vibration characteristics and active vibration control of GPLs-reinforced metal foam beams with surfacebonded piezoelectric layers. The constant velocity feedback scheme is used to design the closed-loop controller including piezoelectric actuators and sensors. The effects of the GPLs on the linear and nonlinear free vibrations of the beams are numerically *** Newmark-β method combined with Newton's iteration technique is used to calculate the nonlinear responses of the beams under different load forms including harmonic loads,impact loads, and moving loads. Additionally, special attention is given to the vibration reduction performance of the velocity feedback control on the responses of the beam.

关键词： Piezoelectric actuators

Automatic and Rapid Throughflow-Based Optimal Design Method for Multi-Stage Axial-Flow Compressors

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Journal of Thermal Science 2025年第1期34卷 77-91页

作者： LEI fan ZHANG Xiawen JU Yaping ZHANG Chuhua Department of Fluid Machinery and Engineering School of Energy and Power EngineeringXi'an Jiaotong University Production and Environmental Department China Huaneng Group.Co.Ltd. State Key Laboratory for Strength and Vibration of Mechanical Structures Xi'an Jiaotong University

Throughflow design has the advantages of less time consumption and large optimization space,and thus is the corner stone of advanced design system of multi-stage axial-flow *** majority of relevant studies were limited to the throughflow inverse designs,and quite few works have been till now devoted to the throughflow optimal *** this work,an automatic and rapid throughflow-based optimal design method is proposed for axial-flow compressors in which a throughflow inverse design solver is embedded in optimal genetic algorithm to improve the design efficiency of axial-flow *** types of design parameters in the throughflow inverse design of axial-flow compressors,i.e.,swirl and shroud curve,are simultaneously used to optimize both the blade shape and flow *** proposed method is validated by the redesign optimization of the benchmark axial-flow compressor NASA Stage 35,and the CFD predictions show that the throughflow-based optimization leads to 1.18% efficiency benefit at design *** proposed method is then utilized to the two-dimensional throughflow optimal design of a large-scale 6.5-stage axial-flow industrial *** optimal design results are confirmed by CFD predictions,indicating that the proposed method can effectively improve the design adiabatic efficiency of the compressors by 1.09% within a few minutes on desk-top *** throughflow design implications are also obtained for advanced axial-flow industrial *** work could enhance the capability of throughflow design method and has engineering application value to explore the throughflow optimization space of multi-stage axial-flow compressors.

关键词： NASA