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An in-situ defect passivation through a green anti-solvent approach for high-efficiency and stable perovskite solar cells

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Science Bulletin 2021年第14期66卷 1419-1428,M0004页

作者： Chang Liu Lei Huang Xianyong Zhou Xingzhu Wang Jianxi Yao Zhike Liu Shengzhong Frank Liu Wanli Ma Baomin Xu Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China Department of Materials Science and Engineering and Shenzhen Engineering Research and Development Center for Flexible Solar Cells Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of EducationShenzhen 518055China Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education) Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Laborartory for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Institute of Functional Nano&Soft Materials Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China

Surface and grain boundary defects in halide perovskite solar cells are highly detrimental,reducing efficiencies and *** halide anion and organic cation defects usually aggravate ion diffusion and material degradation on the surfaces and at the grain boundaries of perovskite *** this study,we employ an in-situ green method utilizing nontoxic cetyltrimethylammonium chloride(CTAC)and isopropanol(IPA)as anti-solvents to effectively passivate both surface and grain boundary defects in hybrid *** vacancies can be readily passivated by the chloride group due to its high electronegativity,and cation defects can be synchronously passivated by the more stable cetyltrimethylammonium *** results show that the charge trap density was significantly reduced,while the carrier recombination lifetime was markedly *** a result,the power conversion efficiency of the cell can reach 23.4%with this in-situ green *** addition,the device retains 85%of its original power conversion efficiency after 600 h of operation under illumination,showing that the stability of perovskite solar cells is improved with this in-situ passivation *** work may provide a green and effective route to improve both the stability and efficiency of perovskite solar cells.

关键词： Perovskite solar cells In-situ defect passivation Green anti-solvent

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Preparation and Chemical Analysis of Volatile Oil in Two Different leaf type of Ficus hirta Vahl. 8

Preparation and Chemical Analysis of Volatile Oil in Two Dif...

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8th Annual International Conference on Material Science and Engineering, ICMSE 2020

作者： Chen, Lishi Chen, Jianping Du, Mengjiao Tang, Wenjing Zhang, Biting Yu, Chuqin Centre for Drug Research and Development Guangdong Pharmaceutical University Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems Guangdong Pharmaceutical University Guangdong Engineering and Technology Research Center of Topical Precise Drug Delivery System Guangdong Pharmaceutical University East Waihuan Road 280 China First Affiliated Hospital Sun Yat-sen University China

To analyze the chemical constituents of volatile oil in two different leaf types of Ficus hirta Vahl. Steam distillation was used to collect the different leaf types of Ficus hirta Vahl., the volatile chemical components of extracts were analyzed using GC-MS,and the relative contents of various chemical components in the volatile oils of the two medicinal materials were calculated by area normalization method. The volatile oils of the Ficus hirta Vahl of three-lobed leaf type and five-lobed leaf type contained 38 and 39 compounds, respectively. The main components are coumarins, organic acids, aldehydes, esters, alcohols, etc. In addition, there are some Hydrocarbons, phenols, ketones, and the chemical composition and relative content of volatile oils of the two have large *** method can quickly and easily identify the chemical constituents of the volatile oils of two different leaf Ficus hirta Vahl., and there are significant differences in the chemical constituents in the volatile oils of the Ficus hirta Vahl. of three-lobed leaf type and five-lobed leaf type. © Published under licence by IOP Publishing Ltd.

关键词： Ketones

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Engineering grain boundaries in monolayer molybdenum disulfide for efficient water-ion separation

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Science (New York, N.Y.) 2025年第6735期387卷 776-782页

作者： Shen, Jie Aljarb, Areej Cai, Yichen Liu, Xing Min, Jiacheng Wang, Yingge Wang, Qingxiao Zhang, Chenhui Chen, Cailing Hakami, Mariam Fu, Jui-Han Zhang, Hui Li, Guanxing Wang, Xiaoqian Chen, Zhuo Li, Jiaqiang Dong, Xinglong Shih, Kaimin Huang, Kuo-Wei Tung, Vincent Shi, Guosheng Pinnau, Ingo Li, Lain-Jong Han, Yu Physical Sciences and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore Department of Physics King Abdulaziz University Jeddah Saudi Arabia KAUST Catalysis Center King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Nanjing Tech University (NanjingTech) Nanjing China Shanghai Applied Radiation Institute Shanghai Key Laboratory of Atomic Control and Application of Inorganic 2D Supermaterials Shanghai University Shanghai China Department of Mechanical Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Department of Civil Engineering University of Hong Kong Pok Fu Lam Road Hong Kong China Imaging and Characterization Core Lab King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Department of Chemical System Engineering School of Engineering University of Tokyo Tokyo Japan Center for Electron Microscopy South China University of Technology Guangzhou China School of Emergent Soft Matter South China University of Technology Guangzhou China Catalyst Center of Excellence (CCoE) Research and Development Center Saudi Aramco Dhahran Saudi Arabia Center for Sustainability and Energy Technologies Chang Gung University Taoyuan Taiwan Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining Qinghai China University of Chinese Academy of Sciences Wenzhou China

Two-dimensional (2D) materials have long been considered as ideal platforms for developing separation membranes. However, it is difficult to generate uniform subnanometer pores over large areas on 2D materials. We report that the well-defined eight-membered ring (8-MR) pores, typically formed at the boundaries of two antiparallel grains of monolayer molybdenum disulfide (MoS2), can serve as molecular sieves for efficient water-ion separation. The density of grain boundaries and, consequently, the number of 8-MR pores can be tuned by regulating the grain size. Optimized MoS2 membranes outperformed the state-of-the-art membranes in forward osmosis tests by demonstrating both ultrahigh water/sodium chloride selectivity and exceptional water permeance. Creating precise pore structures on atomically thin films through grain boundary engineering presents a promising route for producing membranes suitable for various applications.

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A New Low-power Pixel Circuit for OLEDoS Microdisplay

A New Low-power Pixel Circuit for OLEDoS Microdisplay

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17th China International Forum on Solid State Lighting &2020 International Forum on Wide Bandgap Semiconductors (第十七届中国国际半导体照明论坛暨2020国际第三代半导体论坛)

作者： Deng Hao Guo Aiying Ran Feng Microelectronic Research & Development Center Shanghai UniversityShanghai200444China Key Laboratory of Advanced Display and System Applications Shanghai UniversityShanghai200072 China

ISBN: (数字)9780738111889

ISBN: (纸本)9781665419642

In order to solve the problem of high bandwidth data volume and low power consumption of OLEDoS microdisplay panels,this paper proposes a new type of digital low-power pixel *** driving circuit includes a plurality of pixel driving units,which can store multi-pixel bit information at one time,thereby reducing the amount of data read *** with the traditional digital pixel circuit,the proposed circuit can skip the grayscale data writing process when the picture is still or the rate of change is low,thus reducing the data flow and power consumption.

关键词： Microdisplays Organic light emitting diodes Writing MOSFET Brightness Power demand Integrated circuit modeling

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Acanthopanax trifoliatus (L.) Merr polysaccharides: A novel therapeutic agent for hyperuricemia management

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Journal of Functional Foods 2025年 129卷

作者： Wu, Guoyu Lin, Yuzi Chen, Qi Pan, Jinghua Wang, Guixiang Pan, Yufang School of Pharmacy Guangdong Pharmaceutical University Guangzhou China Guangdong Provincial Key Laboratory of Advanced Drug Delivery Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System Guangdong Pharmaceutical University Guangzhou China The Center for Drug Research and Development Guangdong Pharmaceutical University Guangzhou China

Hyperuricemia is a prevalent condition associated with an elevated risk of multiple metabolic comorbidities. There is an urgent need for novel anti-hyperuricemic agents that are both highly effective and have minimal side effects. In this study, we demonstrated that Acanthopanax trifoliatus (L.) Merr polysaccharides (ATMP) have therapeutic potential for managing hyperuricemia. ATMP effectively reduced serum uric acid levels by inhibiting hepatic production and enhancing renal excretion, without significant toxicity. It also suppressed adenosine deaminase and xanthine oxidase activity, reduced inflammation and oxidative stress, and ameliorated liver and renal impairment in hyperuricemic mice. Notably, ATMP exhibited reversible mixed-inhibition of xanthine oxidase. Overall, ATMP exerts strong hypouricemic effects and could potentially be used to treat hyperuricemia-related conditions in the future. © 2025 The Author(s)

关键词： Acanthopanax trifoliatus (L.) Merr Biomacromolecule Hyperuricemia Purine metabolism Xanthine oxidase inhibitor

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Overcoming Van der Waals Forces in reconfigurable nanostructures

arXiv

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arXiv 2022年

作者： Zhang, Wang Wang, Hao Tan, Alvin T.L. Ranganath, Anupama Sargur Zhang, Biao Wang, Hongtao Chan, John You En Ruan, Qifeng Liu, Hailong Ha, Son Tung Wang, Dong Ravikumar, Venkat K. Low, Hong Yee Yang, Joel K.W. Engineering Product Development Singapore University of Technology and Design Singapore487372 Singapore Northwestern Polytechnical University 127 West Youyi Road Xi'An710072 China Institute of Materials Research and Engineering Singapore138634 Singapore Robotics Institute State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University Shanghai200240 China Advanced Micro Devices Singapore Pte Ltd Singapore Singapore

Reconfigurable metamaterials1-3 require constituent nanostructures to demonstrate switching of shapes with external stimuli. For generality, such nanostructures would touch and stick to other surfaces in one of its configurations. Yet, a longstanding challenge is in overcoming this stiction caused by Van der Waals forces, which impedes shape recovery. Here, we introduce a stiff yet self-recovering material system based on acrylic acid, and tested it in high-aspect ratio structures, where recovery is weak. This designer material has a storage modulus of ~5.2 GPa at room temperature and ~90 MPa in the rubbery state at 150 ℃, an order of magnitude higher than previous reports. A high-resolution resin for two-photon lithography was developed based on this polymer system, enabling 3D printing of nanopillars with diameters of ~400 nm and aspect ratio as high as ~10. Experimentally, we observed self-recovery as collapsed and touching structures overcome stiction to stand back up. We developed a theoretical model to explain the recoverability of these sub-micron structures. Reconfigurable structural colour prints and holograms were demonstrated, indicating potential applications of the material system as a shape memory polymer suitable for sub-micron reconfigurable metamaterials. Copyright © 2022, The Authors. All rights reserved.

关键词： Van der Waals forces

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Corrigendum to “A novel molecular imprinted probe with hybrid ratio fluorescent for visual detection of imazapyr” [Microchemical Journal 198 (2024) 110116]

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Microchemical Journal 2024年 204卷

作者： Jin Zhou Yue Xiao Jiangquan Huang Maoliang Huang Shu Zhang Kang Li School of Pharmacy Guangdong Pharmaceutical University Guangzhou 510006 China Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems and Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System Center for Drug Research and Development of Guangdong Pharmaceutical University Guangzhou 510006 China

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A Fast-Charging Cathode for Na-Ion Hybrid Supercapacitor

SSRN

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SSRN 2022年

作者： Liu, Zhaolu Cao, Yongjie Zhang, Hao Xu, Jie Zhao, Deqiang Wang, Nan Cheng, Guangyu Zhou, Yirong Liu, Yao Zhang, Junxi Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai200090 China Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai200433 China Key Laboratory of Hydraulic and Waterway Engineering National Engineering Research Center for Inland Waterway Regulation School of River & Ocean Engineering Chongqing Jiaotong University Chongqing400074 China Power & Energy Storage Battery System Engineering Tech. Co. Ltd. Shanghai200241 China Shanghai Aowei Technology Development Co. Ltd. Shanghai200241 China

Iron-based phosphate (Na 3 Fe 2 (PO 4 )P 2 O 7 ) cathode have been regarded as a potential cathode for sodium-ion batteries (SIBs), but the poor-rate capability restricts their fast charging performance. In this work, we have synthesized a mesoporous Na 3 Fe 2 (PO 4 )P 2 O 7 (M-NFPP) material and employed them in rechargeable sodium-ion batteries. The mesopores are produced by the decomposition carbonization of polyvinyl alcohol, which enlarges reactive sites and accelerates Na ion migration. As a result, the reversible specific capacity maintains at 81 mAh g - 1 (72.5% of 0.1 C reversible specific capacity) under an ultra-high C-rate of 40 C (equal to 1.5 mins), and than 1000 cycles life. A Na-ion hybrid supercapacitor using M-NFPP as cathode and active carbon as an anode can achieve a maximum energy and power density of 48 Wh kg - 1 and 1350 W kg - 1 with a capacity retention rate of 92% after 500 cycles at 20 C. © 2022, The Authors. All rights reserved.

关键词： Sol-gels

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Undoped Strained Ge Quantum Well with Ultrahigh Mobility Grown by Reduce Pressure Chemical Vapor Deposition

arXiv

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arXiv 2022年

作者： Kong, Zhenzhen Li, Zonghu Cao, Gang Su, Jiale Zhang, Yiwen Liu, Jinbiao Liu, Jingxiong Ren, Yuhui Wei, Laiming Guo, Guoping Wu, Yuanyuan Radamson, Henry H. Li, Junfeng Wu, Zhenhua Li, Haiou Yang, Jiecheng Zhao, Chao Wang, Guilei Integrated Circuit Advanced Process R&D Center Institute of Microelectronics Chinese Academy of Sciences Beijing100029 China School of Integrated Circuits University of Chinese Academy of Sciences Beijing100049 China CAS Key Laboratory of Quantum Information University of Science and Technology of China Hefei230026 China Hefei National Laboratory Hefei230088 China School of Advanced Manufacturing Engineering Hefei University Hefei230601 China Origin Quantum Computing Company Limited Hefei230026 China Research and Development Center of Optoelectronic Hybrid IC Guangdong Greater Bay Area Institute of Integrated Circuit and System Guangzhou510535 China Beijing Superstring Academy of Memory Technology 100176 China

We fabricate an undoped Ge quantum well under a 30 nm relaxed Ge0.8Si0.2 shallow barrier. The bottom barrier contains Ge0.8Si0.2 (650 ℃) followed by Ge0.9Si0.1 (800 ℃) such that variation of Ge content forms a sharp interface that can suppress the threading dislocation density (TDD) penetrating into the undoped Ge quantum well. The Ge0.8Si0.2 barrier introduces enough in-plane parallel strain (Ε strain -0.41%) in the Ge quantum well. The heterostructure field-effect transistors with a shallow buried channel obtain an ultrahigh two-dimensional hole gas (2DHG) mobility over 2×106 cm2/Vs and a very low percolation of 5.625 × 1010cm−2. A tunable fractional quantum Hall effect at high densities and high magnetic fields has also been observed. This approach defines strained germanium as providing the material basis for tuning the spin-orbit coupling strength for fast and coherent quantum *** Codes 81-05, 81V70 © 2022, CC BY-NC-ND.

关键词： Germanium

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MaskFlownet: Asymmetric Feature Matching With Learnable Occlusion Mask

MaskFlownet: Asymmetric Feature Matching With Learnable Occl...

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Conference on Computer Vision and Pattern Recognition (CVPR)

作者： Shengyu Zhao Yilun Sheng Yue Dong Eric I-Chao Chang Yan Xu Institute for Interdisciplinary Information Sciences Tsinghua University Beijing China Microsoft Research Beijing China State Key Laboratory of Software Development Environment and Key Laboratory of Biomechanics and Mechanobiology of Ministry of Education and Research Institute of Beihang University in Shenzhen and Beijing Advanced Innovation Center for Biomedical Engineering Beihang University Beijing China

ISBN: (数字)9781728171685

ISBN: (纸本)9781728171692

Feature warping is a core technique in optical flow estimation; however, the ambiguity caused by occluded areas during warping is a major problem that remains unsolved. In this paper, we propose an asymmetric occlusion-aware feature matching module, which can learn a rough occlusion mask that filters useless (occluded) areas immediately after feature warping without any explicit supervision. The proposed module can be easily integrated into end-to-end network architectures and enjoys performance gains while introducing negligible computational cost. The learned occlusion mask can be further fed into a subsequent network cascade with dual feature pyramids with which we achieve state-of-the-art performance. At the time of submission, our method, called MaskFlownet, surpasses all published optical flow methods on the MPI Sintel, KITTI 2012 and 2015 benchmarks. Code is available at https://***/microsoft/MaskFlownet.

关键词： Feature extraction Estimation Optical imaging Convolution Biomedical optical imaging Correlation Laboratories

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