检索结果-南通市图书馆

Unraveling the impacts of intermolecular interaction on morphology evolution for highly efficient organic solar cells and modules

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第1期68卷 264-272页

作者： Xueqing Ma Yingying Cheng Yuqiang Liu Xinming Zheng Guangliu Ran Hongxiang Li Xinyue Cui Andong Zhang Wenkai Zhang Pei Cheng Wenchao Huang zhishan Bo Beijing Key Laboratory of Energy Conversion and Storage Materials College of Chemistry Beijing Normal University College of Textiles and Clothing State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Key State Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of Technology Department of Physics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University State Key Laboratory of Polymer Materials Engineering College of Polymer Science and Engineering Sichuan University

Understanding the effect of intermolecular interaction on the growth dynamic of active layers is critical for advancing organic solar cells(OSCs). However, the diverse structure of donors and acceptors makes the research challenging. Additives with customizable structures and properties could simplify this complexity. Herein, we meticulously tailor two additives of 3,4-ethylenedioxythiophene(EDOT) and 2,5-dibromo-3,4-ethylenedioxythiophene(DBEDOT), possessing distinct intermolecular interaction features to elaborate the inherent relationship. It is found that varied interaction strengths can alter film formation processes. The enhanced intermolecular interaction between the DBEDOT and non-fullerene acceptor BTP-e C9-4F results in pre-aggregation and longer crystallization duration of BTP-e C9-4F, facilitating the formation of films with compact molecular packing and decent phase separation. Thus, exciton dissociation and charge transport become more efficient. Finally, devices processed with DBEDOT exhibit a remarkable power conversion efficiency of 19.35% in small-area OSCs and 14.11% in bladecoated 5 cm × 5 cm organic solar mini-modules. Especially, OSCs can maintain 80% of their initial efficiency after continuous annealing at 85 °C for over 2,100 h.

关键词： organic solar cell non-fullerene acceptor film growth molecular packing intermolecular interaction

High-performance polymer solar cells with >13% efficiency

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2018年第5期61卷 507-508页

作者： zhishan Bo College of Chemisty Beijing Normal UniversityBeijing 100875 China

In the last three years,polymer solar cells（PSCs）based on ntype organic semiconductor（n-OS）acceptor have become the focus of attention and made great progress.

关键词： PCE High-performance polymer solar cells with

On the Number of Integral Ideals in Two Different Quadratic Number Fields

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2016年第4期37卷 595-606页

作者： zhishan YANG School of Mathematics and Statistics Northeast Normal University

Let K be an algebraic number field of finite degree over the rational field ~, and aK （n） the number of integral ideals in K with norm n. When K is a Galois extension over Q, many authors contribute to the integral power sums of aK（n）,This paper is interested in the distribution of integral ideals concerning different number fields. The author is able to establish asymptotic formulae for the convolution sumwhere K1 and K2 are two different quadratic fields.

关键词： Asymptotic formula Integral ideal Number field 17B40 17B50

Ideal counting function in cubic fields

在线全文

学校读者我要写书评

暂无评论

Frontiers of Mathematics in China 2017年第4期12卷 981-992页

作者： zhishan YANG School of Mathematics and Statistics Qingdao University Qingdao 266071 China

For a cubic algebraic extension K of Q, the behavior of the ideal counting function is considered in this paper. More precisely, let aK（n） be the number of integral ideals of the field K with norm n, we prove an asy... 详细信息

关键词： Non-normal extension ideal counting function Rankin-Selberg convolution

Asymmetric molecular engineering in recent nonfullerene acceptors for efficient organic solar cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第10期34卷 48-54页

作者： Jinsheng Song zhishan Bo Engineering Research Center for Nanomaterials Henan UniversityKaifeng 475004China Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing 100875China College of Textiles&Clothing Qingdao UniversityQingdao 266071China

Nonfullerene acceptors(NFAs),which usually possess symmetric skeletons,have drawn great attention in recent years due to their pronounced advantages over the fullerene ***,breaking the symmetry of NFAs could fine tune the molecular dipole,solubility,energy level,intermolecular interaction,molecular packing,crystallinity,etc.,and give rise to improved photovoltaic ***,there are three main strategies for the design of asymmetric *** review highlights the recent advances of high-performance asymmetric NFAs and briefly outlooks the materials exploration for the future.

关键词： Asymmetric strategy Organic photovoltaics Nonfullerene acceptor Side chain engineering Y-series acceptors

The Dry Cracking of Cementitious Materials in the Eccentric Ring Test and the Concentric Ring Test

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2022年第2期37卷 212-221页

作者： TIAN Cong ZHENG zhishan WEI Xiaosheng School of Civil and Hydraulic Engineering Huazhong University of Science and TechnologyWuhan 430072China

In order to reduce the randomness of the occurrence of cracks and shorten the long cracking time in the traditional concentric ring tests,the elliptical ring test,the square-eccentric ring test,and the eccentric ring test have been gradually *** this paper,we reported experiments on the eccentric ring test and concentric ring test that were carried out to compare the differences between the two *** is found that an increase in the water-cement ratio and the amount of aggregate will increase the cracking ***,a more obvious cracking tendency of cement-based materials can be seen in the eccentric ring *** correlation between humidity and strain was established by the use of the Kelvin equation and the Laplace equation so that the coupling analysis of humidity and strain during the drying process of cement-based materials could be *** experimental results show that the external surface humidity will decrease rapidly in the early stage of drying,while the interior areas of the cement-based materials decrease more *** closer to the inner circle will decrease the humidity slowly.

关键词： the eccentric ring test the concentric ring test crack humidity strain

Near-surface wind field characteristics of the desert-oasis transition zone in Dunhuang,China

在线全文

学校读者我要写书评

暂无评论

Journal of Arid Land 2024年第5期16卷 654-667页

作者： PAN Jiapeng ZHANG Kecun AN zhishan ZHANG Yu Key Laboratory of Desert and Desertification&Dunhuang Gobi and Desert Ecology and Environment Research Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

The desert-oasis transition zone(DOTZ)serves as a buffer area between the desert and *** its wind field characteristics is of great significance for the prevention and control of aeolian disasters in the *** this study,we used meteorological data during 2013–2019 from the portable meteorological stations at five sites(site A on the edge of the oasis,sites B,C,and D in the DOTZ,and site O in the desert)in Dunhuang,China to analyze the near-surface wind field characteristics and their causes,as well as to reveal the key role of the DOTZ in oasis *** results showed that the mean wind speed,frequency of sand-driving wind,and directional variability of wind decreased from west to east within the DOTZ,and wind speed was significantly affected by air *** terrain influenced the prevailing winds in the region,mainly from northeast and *** some areas adjacent to the oasis were controlled by southeasterly *** indicated that the near-surface wind field characteristics of the DOTZ were caused by the combined effects of local terrain and surface hydrothermal *** site D,the annual drift potential(DP)was 24.95 vector units(VU),indicating a low wind energy environment,and the resultant drift direction(RDD)showed obvious seasonal ***,the DOTZ played an important buffering role between the desert and *** with the desert,the mean wind speed in the oasis decreased by 64.98%,and the prevailing wind direction was more *** results of this study will be useful in interpreting the aeolian activity of the DOTZ in Dunhuang.

关键词： desert-oasis transition zone near-surface wind field hydrothermal difference sand-driving wind aeolian environment Dunhuang

Evaluating the photovoltaic properties of two conjugated polymers synthesized by Suzuki polycondensation and direct C–H activation

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2015年第2期58卷 286-293页

作者： Hedi Wei Heng Lu Tao Fang zhishan Bo Beijing Key Laboratory of Energy Conversion and Storage Materials Key Laboratory of Theoretical and Computational PhotochemistryMinistry of Education College of Chemistry Beijing Normal University

Two conjugated polymers HXS-1 and PDFCDTBT were prepared by direct C–H activation and Suzuki polycondensation and their chemical structures were characterized by 1H NMR *** molecular weight of conjugated polymer synthesized by direct C–H activation is lower than the corresponding polymers prepared by Suzuki *** polymers synthesized by direct C–H activation have considerable solubility in common organic solvents and form amorphous *** photovoltaic property of conjugated polymers synthesized by direct C–H activation is inferior to the corresponding polymers synthesized by Suzuki polycondensation.

关键词： polymer solar cells Suzuki polycondensation direct C-H activation conjugated polymers donor materials

Research progress in BYDV resistance genes derived from wheat and its wild relatives

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2009年第9期36卷 567-573页

作者： Zengyan Zhang zhishan Lin Zhiyong Xin ational Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 China

Barley yellow dwarf virus （BYDV） may cause a serious disease affecting wheat worldwide. True resistance to BYDV is not naturally found in wheat. BYDV resistance genes are found in more than 10 wild relative species belonging to the genera of Thinopyrum, Agropyron, Elymus, Leymus, Roegneria, and Psathyrostachy. Through wide crosses combining with cell culture, use ofph mutants, or irradiation, 3 BYDV resistance genes in Th. intermedium, including Bdv2, Bdv3 and Bdv4, were introgressed into common wheat background. Various wheat-Th, intermedium addition and substitution, translocation lines with BYDV-resistance were developed and characterized, such as 7D-TAi#1 （bearing Bdv2）, 7B-7Ai#1, 7D-7E （beating Bdv3）, and 2D-2Ai-2 （bearing Bdv4） translocations. Three wheat varieties with BYDV resistance from Th. intermedium were developed and released in Australia and China, respectively. In addition, wheat-Agropyron cristatum translocation lines, wheat-Ag, pulcherrimum addition and substitution lines, and a wheat-Leymus multicaulis addition line （line24） with different resistance genes were developed. Cytological analysis, morphological markers, biochemical markers, and molecular markers associated with the alien chromatin carrying BYDV resistance genes were identified and applied to determine the presence of alien, chromosomes or segments, size of alien chromosome segments, and compositions of the alien chromosomes. Furthermore, some resistance-related genes, such as RGA, P450, HSP70, protein kinases, centrin, and transducin, were identified, which expressed specifically in the resistance translocation lines with Bdv2. These studies lay the foundations for developing resistant wheat cultivars and unraveling the resistance mechanism against BYDV.

关键词： wheat (Triticum aestivum) BYDV resistance alien chromosome introgression identification resistance-related gene