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Bifunctional bridging capping layer enables 24.5% efficiency of perovskite solar cells with polymer-based hole transport materials

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Science China Chemistry 2025年第1期 350-359页

作者： Can Zhu yiyang wang Lei Meng Beibei Qiu Jing Li Shucheng Qin Ke Hu Xin Jiang Wenbin Lai Minchao Liu Zhe Liu Chenxing Lu Jinyuan Zhang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences School of Chemical Science University of Chinese Academy of Sciences Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information Engineering Zhejiang Normal University Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials ScienceSoochow University

Developing a bridge capping layer between perovskite and hole transport layer materials（HTMs） in the n-i-p perovskite solar cells（pero-SCs） is an effective approach to modify the morphology of HTMs and passivate the perovskite ***, we select the quinoxaline-based bifunctional passivation agent, quinoxalin-6-yl-methylamine hydrochloride（Qx MACl）,as the bridging layer, and a D-A copolymer PBQ12 containing the same quinoxaline unit as an HTM for the n-i-p pero-SCs. Due to the π-π stacking among the common quinoxaline units in the bridge layer and HTM, Qx MACl induces the π-π stacking of the PBQ12 film and improves the film morphology of HTMs with better conductivity. Additionally, Qx MACl can effectively passivate the perovskite surface, and PBQ12 possesses appropriate energy levels and high hole mobility. The pero-SCs based on FAPbI3with PBQ12/Qx MACl treatment showed a higher power conversion efficiency（PCE） of 24.05% and outstanding stability, maintaining 95.4% and 92.1% of its initial PCE after 750 h of storage and after over 800 h of thermal annealing at 85 °C, respectively. To further enhance the PCE of the PBQ12/Qx MACl-based devices, we developed a non-metal ion dopant for the PBQ12 HTM. Through trace doping of PBQ12 HTM by the non-metal ion dopant, the PCE of the PBQ12/Qx MACl-based devices reached 25.24%（the calibrated PCE of 24.55% by the National Institute of Metrology, China）.

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21世纪前传统中药人参在俄国的认识与传播

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亚太传统医药 2025年第1期21卷 1-4页

作者：王铱杨湖南师范大学外国语学院湖南长沙410000

中医药历来是中俄交流的重要组成部分。17-20世纪,受欧洲“中国热”以及中国本土文化的影响,俄国对中药人参的认识先后经历了传教士团初步了解、医药学家临床试验和全民广泛栽种培育三个主要阶段。凭借地缘优势,俄国先于欧洲各国开展人... 详细信息

中医药历来是中俄交流的重要组成部分。17-20世纪,受欧洲“中国热”以及中国本土文化的影响,俄国对中药人参的认识先后经历了传教士团初步了解、医药学家临床试验和全民广泛栽种培育三个主要阶段。凭借地缘优势,俄国先于欧洲各国开展人参实验,并进行广泛应用,但纵观国内学界,关于人参在俄传播史的研究成果有限。通过探索自中俄交往以来各个时期人参在俄国的认识特点和传播特征,可以揭示传统中医药在传播过程中对中俄交流产生的深远影响,并为“中医药文化走出去”提供参考。

关键词：中俄交流人参中医中草药对外传播

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An FE-Inexact Heterogeneous ADMM for Elliptic Optimal Control Problems with L^1-Control Cost

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Journal of Systems Science & Complexity 2018年第6期31卷 1659-1697页

作者： SONG Xiaoliang YU Bo wang yiyang ZHANG Xuping School of Mathematical Sciences Dalian University of TechnologyDalian 116025China Shanghai Institute of Meteorological Science Shanghai 200030China Institute of Atmospheric Sciences Fudan UniversityShanghai 200433China School of Mathematical Sciences Dalian University of TechnologyDalian 116025China.

Elliptic PDE-constrained optimal control problems with L^1-control cost(L^1-EOCP) are considered. To solve L^1-EOCP, the primal-dual active set(PDAS) method, which is a special semismooth Newton(SSN) method, used to be a priority. However, in general solving Newton equations is expensive. Motivated by the success of alternating direction method of multipliers(ADMM), we consider extending the ADMM to L^1-EOCP. To discretize L^1-EOCP, the piecewise linear finite element(FE) is considered. However, different from the finite dimensional L^1-norm, the discretized L^1-norm does not have a decoupled form. To overcome this difficulty, an effective approach is utilizing nodal quadrature formulas to approximately discretize the L^1-norm and L^2-norm. It is proved that these approximation steps will not change the order of error estimates. To solve the discretized problem,an inexact heterogeneous ADMM(ihADMM) is proposed. Different from the classical ADMM, the ihADMM adopts two different weighted inner products to define the augmented Lagrangian function in two subproblems, respectively. Benefiting from such different weighted techniques, two subproblems of ihADMM can be efficiently implemented. Furthermore, theoretical results on the global convergence as well as the iteration complexity results o(1/k) for ihADMM are given. In order to obtain more accurate solution, a two-phase strategy is also presented, in which the primal-dual active set(PDAS)method is used as a postprocessor of the ihADMM. Numerical results not only confirm error estimates,but also show that the ihADMM and the two-phase strategy are highly efficient.

关键词： ADMM finite element sparse optimal control

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Fractional differential approach to detecting textural features of digital image and its fractional differential filter implementation

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Science in China(Series F) 2008年第9期51卷 1319-1339页

作者： PU YiFei wang WeiXing ZHOU JiLiu wang yiyang JIA HuaDing School of Computer Science and Technology Sichuan University Chengdu 610064 China School of Electronic Engineering University of Electronic Science and Technology of China Chengdu610054 China Academie des Sciences de I'lnstitue de France 28 rue Saint-Dominique 75007 Paris France Laboratoire de I'IADI ERI (INSERM-UHP) au CHU de Nancy Brabois Universite Henri Poincare(Nancy I)54511 Vandoeuvre les Nancy France School of Electronics and Information Sichuan University Chengdu 610064 China

This paper mainly discusses fractional differential approach to detecting textural features of digital image and its fractional differential filter. Firstly, both the geo- metric meaning and the kinetic physical meaning of fractional differential are clearly explained in view of information theory and kinetics, respectively. Secondly, it puts forward and discusses the definitions and theories of fractional stationary point, fractional equilibrium coefficient, fractional stable coefficient, and fractional grayscale co-occurrence matrix. At the same time, it particularly discusses frac- tional grayscale co-occurrence matrix approach to detecting textural features of digital image. Thirdly, it discusses in detail the structures and parameters of nxn any order fractional differential mask on negative x-coordinate, positive x-coordi- nate, negative y-coordinate, positive y-coordinate, left downward diagonal, left upward diagonal, right downward diagonal, and right upward diagonal, respectively. Furthermore, it discusses the numerical implementation algorithms of fractional differential mask for digital image. Lastly, based on the above-mentioned discus- sion, it puts forward and discusses the theory and implementation of fractional differential filter for digital image. Experiments show that the fractional differential-based image operator has excellent feedback for enhancing the textural details of rich-grained digital images.

关键词： fractional stationary point fractional equilibrium coefficient fractional stable coefficient fractional grayscale co-occurrence matrix fractional differential mask

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A novel biodegradable Mg-1Zn-0.5Sn alloy:Mechanical properties,corrosion behavior,biocompatibility,and antibacterial activity

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Journal of Magnesium and Alloys 2020年第2期8卷 374-386页

作者： Weikang Zhao Jingfeng wang Jiang Weiyang Bo Qiao yiyang wang Yuling Li Dianming Jiang Department of Orthopedics The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016PR China National Engineering Research Center for Magnesium Alloys College of Materials Science and EngineeringChongqing UniversityChongqing 400044PR China Department of Orthopedics Affiliated Hospital of North Sichuan Medical CollegeSichuan 637000PR China Department of Orthopedics Third A ffiliated Hospital of Chongqing Medical UniversityChongqing 401120PR China Department of Bioengineering University of CaliforniaLos AngelesCalifornia 90095-1600United States

To meet the growing demand for antibacterial implants for bone-implant-associated infection therapy and avoid the adverse effects of secondary surgery,a degradable platform with pH responsiveness and ion-associated antibacterial properties was constructed.A small amount of Sn added to Mg-1Zn alloy reduces the biocorrosion rate,which can be attributed to Sn participation in outer-layer film formation,significantly reducing the biocorrosion rate and hydrogen evolution rate after implantation in *** Mg alloys,which are susceptible to degradation in the acidic bacterial microenvironment,degrade by releasing Mg,Zn and Sn,producing favorably alkaline and antibacterial *** with the composition of Mg-1Zn-0.5Sn were found to be beneficial for promoting initial cell adhesion and proliferation,resulting in improved biocompatibility and *** biocompatibility of this alloy was confirmed by the healthy behavior of animals and the absence of acute or chronic toxicity in the liver,spleen,and *** results demonstrate that Mg-1Zn-0.5Sn is safe for biological systems,enabling its efficacious use in biomedical applications.

关键词： Magnesium alloy Degradable materials Antibacterial Biosafety

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Boosting 5-ALA-based photodynamic therapy by a liposomal nanomedicine through intracellular iron ion regulation

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Acta Pharmaceutica Sinica B 2021年第5期11卷 1329-1340页

作者： Airong Li Chenglin Liang Lihua Xu yiyang wang Wei Liu Kaixiang Zhang Junjie Liu Jinjin Shi Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases School of Pharmaceutical SciencesZhengzhou UniversityZhengzhou 450001China

5-Aminolevulinic acid(5-ALA)has been approved for clinical photodynamic therapy(PDT)due to its negligible photosensitive ***,the curative effect of 5-ALA is restricted by intracellular biotransformation inactivation of 5-ALA and potential DNA repair of tumor *** by the crucial function of iron ions in 5-ALA transformation and DNA repair,a liposomal nanomedicine(MFLs@5-ALA/DFO)with intracellular iron ion regulation property was developed for boosting the PDT of 5-ALA,which was prepared by co-encapsulating 5-ALA and DFO(deferoxamine,a special iron chelator)into the membrane fusion liposomes(MFLs).MFLs@5-ALA/DFO showed an improved pharmaceutical behavior and rapidly fused with tumor cell membrane for 5-ALA and DFO ***@5-ALA/DFO could efficiently reduce iron ion,thus blocking the biotransformation of photosensitive protoporphyrin IX(Pp IX)to heme,realizing significant accumulation of ***,the activity of DNA repair enzyme was also inhibited with the reduction of iron ion,resulting in the aggravated DNA damage in tumor *** findings showed MFLs@5-ALA/DFO had potential to be applied for enhanced PDT of 5-ALA.

关键词： 5-Aminolevulinic acid Biotransformation interference Iron ion regulation DNA repair inhibition ALKBH2 Membrane fusion liposomes Photodynamic therapy Drug delivery

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Stable perovskite solar cells with efficiency of 22.6%via quinoxaline-based polymeric hole transport material

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Science China Chemistry 2021年第11期64卷 2035-2044页

作者： Chenxing Lu Can Zhu Lei Meng Chenkai Sun Wenbin Lai Shucheng Qin Jinyuan Zhang Wenchao Huang Jiaqi Du yiyang wang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of Chemical Science University of Chinese Academy of SciencesBeijing100049China College of Chemistry Green Catalysis CenterZhengzhou UniversityZhengzhou450001China Department of Materials Science and Engineering Monash UniversityClaytonVIC3168Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan528216China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China

Poor stability of spiro-OMe TAD hole transport materials(HTMs)with dopant is a major obstacle for the commercialization of perovskite solar cells(pero-SCs).Herein,we demonstrate a series of quinoxaline-based D-A copolymers PBQ5,PBQ6 and PBQ10 as the dopant-free polymer HTMs for high performance *** D-A copolymers are composed of fluorothienyl benzodithiophene(BDTT)as D-unit,difluoroquinoxaline(DFQ)with different side chains as A-unit,and thiophene asπ-bridge,where the side chains on the DFQ unit are bi-alkyl for PBQ5,bi-alkyl-fluorothienyl for PBQ6,and alkoxyl for *** the three copolymers are adopted as the dopant-free HTM in the *** planar n-i-p structured pero-SCs based on(FAPb I_(3))_(0.98)(MAPb Br_(3))_(0.02)with PBQ6 HTM demonstrated the high power conversion efficiency(PCE)of 22.6%with Vocof1.13 V and FF of 80.8%,which is benefitted from the suitable energy level and high hole mobility of *** PCE of 22.6%is the highest efficiency reported in the n-i-p structured pero-SCs based on dopant-free D-A copolymer *** addition,the peroSCs show significantly enhanced ambient,thermal and light-soaking stability compared with the devices with traditional spiroOMe TAD HTM.

关键词： perovskite solar cells hole transport materials D-A copolymer difluoroquinoxaline stability

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Vigorous and Unrestrained:Weng Changjiang’s Painting

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China & The World Cultural Exchange 2008年第5期74卷 22-23页

作者： wang yiyang

On an early summer day of 1995 my wife and I viewed a painting exhibition on eight artists from South China at the

关键词：中国传统文化绘画艺术温长江

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Psychometric Performance of Learning Burnout Scale for Undergraduates (LBSU) in Guangdong

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Journal of Educational Theory and Management 2021年第2期5卷 125-130页

作者： Yongmei Hou yiyang wang Department of Psychology School of Humanity and AdministrationGuangdong Medical UniversityDongguanGuangdong523808China

To analyze the psychometric performance of Learning Burnout Scale for Undergraduates(LBSU)in Guangdong *** was used to conduct the survey involving 1628 undergraduates who were selected with stratified random sampling from 7 colleges in Guangdong ***’sαcoefficient and split-half reliability were used to analyze the internal consistency of the *** validity,discriminant validity and factor analysis were used to evaluate its structural *** and floor effect were used to analyze its ***’sαcoefficient of the total questionnaire was 0.89 and cronbach’sαcoefficient of 3 dimensions were 0.73-0.78,which met with the requirements of the group ***-Brown split-half coefficient of the total questionnaire and 3 dimensions were 0.90,0.85,0.81,0.79,respectively,which also met with the requirements of the group *** the calibration success rate of convergent validity and discriminant validity of each dimension were 100%.Four components obtained from 20 items which cumulative variance contribution rate was 51.924%.The total score and score of each dimension were all normal distribution,without any floor or ceiling effect in *** psychometric performance of LBSU for assessing undergraduates in Guangdong province is valid and reliable.

关键词： LBSU Learning burnout Validity Reliability Responsiveness Undergraduates

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Research on the Cultivation Path of Craftsmanship Spirit in Vocational Colleges: from the Perspective of Skills Competition

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Journal of Contemporary Educational Research 2023年第7期7卷 1-7页

作者： Shang wang Minghui Chen yiyang wang School of Automotive Engineering Beijing PolytechnicBeijing 100176China

The spirit of craftsmanship is gaining increasing attention from both society and the education *** with professional knowledge,continuous research,and innovation have become decisive factors in determining the quality of *** this context,vocational colleges strive to cultivate high-quality skilled talents,making the cultivation of craftsmanship spirit a crucial component of vocational *** study explores the cultivation path of craftsmanship spirit through the lens of skills competitions,with a special emphasis on developing students’*** research conclusions of this article hold significant reference value for the implementation of vocational education policies.

关键词： Skills competition Cultivation path Craftsmanship spirit Vocational education

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