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TSIngHUA SCIENCE AND TECHNOLOGY 2024年第6期29卷 1851-1871页

作者： Sun, maojie Dong, Fang Huang, Zhaowu Luo, Junzhou Southeast Univ Sch Comp Sci & Engn Nanjing 211189 Peoples R China Najing Iron & Steel Co Nanjing 210035 Peoples R China

The steel plate is one of the main products in steel industries, and its surface quality directly affects the final product performance. How to detect surface defects of steel plates in real time during the production process is a challenging problem. The single or fixed model compression method cannot be directly applied to the detection of steel surface defects, because it is difficult to consider the diversity of production tasks, the uncertainty caused by environmental factors, such as communication networks, and the influence of process and working conditions in steel plate production. In this paper, we propose an adaptive model compression method for steel surface defect online detection based on expert knowledge and working conditions. First, we establish an expert system to give lightweight model parameters based on the correlation between defect types and manufacturing processes. Then, lightweight model parameters are adaptively adjusted according to working conditions, which improves detection accuracy while ensuring real-time performance. The experimental results show that compared with the detection method of constant lightweight parameter model, the proposed method makes the total detection time cut down by 23.1%, and the deadline satisfaction ratio increased by 36.5%, while upgrading the accuracy by 4.2% and reducing the false detection rate by 4.3%.

关键词： Employee welfare Adaptation models Accuracy Production Real-time systems Libraries Steel steel surface defect detection inference acceleration model compression expert knowledge pruning quantization

C-S coupling with nitro group as leaving group via simple inorganic salt catalysis

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Chinese Chemical Letters 2020年第1期31卷 84-90页

作者： maojie Xuan Chunlei Lu Bo-Lin Lin School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China School of Physical Science and Technology(SPST) ShanghaiTech UniversityShanghai 201210China

An efficient and practical synthetic protocol to synthesize nonsymmetrical aryl thioethers by nucleophilic aromatic substitution(S_NAr)reaction of nitroarenes by thiols with potassium phosphate as the catalyst is *** moderate to strong electron-withdrawing functional groups are tolerated by the system to provide thioethers in a good to excellent *** also showed that the present method allows access to 3 drug examples in a short reaction ***,mechanistic studies suggest that the reaction may form the classic Meisenheimer complex through a two-step additionelimination mechanism.

关键词： Inorganic-salt catalysis Nucleophilic aromatic substitution C-S bond Denitrification coupling Kinetic isotope effect Meisenheimer complex

A Non-Halogenated Polymer Donor Based on Imide Unit for Organic Solar Cells with Efficiency Nearly 16%

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Chinese Journal of Chemistry 2023年第17期41卷 2095-2102页

作者： Liu Zhang Zhiliang Zhang Haiyan Liang Xia Guo maojie Zhang Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollegeof ChemistryChemical Engineeringand Materials ScienceSoochow UniversitySuzhouJiangsu 215123China National Engineering Research Center for Colloidal Materials School of Chemistry&Chemical EngineeringShandong UniversityJinanShandong 250100China

Comprehensive Summary,Non-halogenated polymers have great potential in the commercialization of organic solar cells(OSCs)due to their advantages in the manufacturing ***,high-performance donor polymers are limited to a small amount of building ***,we utilize as building block 4H-dithieno[3,2-e:2',3'-g]isoindole-4,6(5H)-dione(DTID)to design and synthesize a relevant non-halogenated polymer PBTID for active layers in *** exhibits a strong absorption in the wavelength range of 400—600 nm with a distinctly wide optical bandgap of 2.06 eV,a low-lying highest occupied molecular orbital(HOMO)energy level of−5.53 *** addition,this polymer has a very strong aggregation effect in solution and could form nanoscale fibrils in the neat ***,when blended with the non-fullerene acceptor Y6,the devices achieve a prominent PCE of 15.8%with a high Voc of 0.87 *** Voc and PCE values are one of the highest values in the non-halogenated polymer donor-based OSCs reported to date.

关键词： Dithienophthalimide Non-halogenated polymer donor Building blocks High efficiency Organic solar cells Aggregation

Effect of Fluorination on the Photovoltaic Properties of Medium Bandgap Polymers for Polymer Solar Cells

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Chinese Journal of Chemistry 2018年第6期36卷 502-506页

作者： Huan Guo Wanbin Li Chunmei Chang Xia Guo maojie Zhang Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China

Fluorination of conjugated polymers is one of the effective strategies to tune the molecular energy levels and morphology for high efficient polymer solar cells （PSCs）. Herein, two novel donor-acceptor conjugated polymers, PffBT and PBT, based on bis（3,5-bis（hexyloxy）phenyl）benzo[1,2- b：4,5-b＇]dithiophene and benzo[c][1,2,5]thiadiazole （BT） with or without fluorination, respectively, were synthesized, and their photovoltaic properties were compared. The polymer PffBT based on fluorinated BT showed lower frontier energy levels, improved polymer ordering, and a well-developed fibril structure in the blend with PC71BM. As a result, the PSCs based on PffBT/PC71BM exhibit a superior power conversion efficiency （PCE） of 8.6% versus 4.4% for PBT-based devices, due to a high space charge limit current （SCLC） hole mobility, mixed orientation of polymer crystals in the active layer, and low bimolecular recombination.

关键词： benzo[c][1 2 5]thiadiazole conjugated polymers fluorination polymer solar cells power conversion efficiency

Metastable liquid properties and rapid crystal growth of Ti-Ni-Al alloy investigated by electrostatic levitation and molecular dynamics simulation

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Science China(Technological Sciences) 2021年第10期64卷 2200-2210页

作者： XIAO RuiLin RUAN Ying LIN maojie QIN JingYu LI Hui HU Liang WEI BingBo MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China

Electrostatic levitation technique and molecular dynamics simulation were performed to investigate the thermophysical properties,liquid structure and crystal growth dependence on undercooling of Ti_(85)Ni_(10)Al_(5) *** liquid Ti_(85)Ni_(10)Al_(5) alloy was substantially undercooled up to 335 K(0.18T_(L)).As undercooling increased,the potential energy of the liquid alloy decreased and the alloy entered into a high metastable *** this state,the atoms tended to bond with each other and the clusters were inclined to convert into high-coordinated clusters,as confirmed by the fraction of the high-coordinated clusters *** enlarged clusters and enhanced local structure stability contributed to the increase of the thermophysical parameters and crystal growth velocity,and eventually dendrite *** density,the specific heat and the surface tension of liquid alloy exhibited a linear relation with temperature and the shear viscosity of liquid alloy showed exponential variation which showed good agreement with the calculation results by molecular dynamics *** growth velocity first increased slowly and then dramatically once the undercooling exceeded the *** achieved maximum crystal growth velocity was 12.4 m s^(−1) and it was up to 326 times of the value at 94 K undercooling.

关键词： electrostatic levitation thermophysical properties liquid structure crystal growth molecular dynamics

Non-Fully Conjugated Photovoltaic Materials with Y-Series Acceptor Backbone for High-Performance Organic Solar Cells

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Chinese Journal of Chemistry 2024年第11期42卷 1307-1318页

作者： Hairui Bai Qunping Fan Ruijie Ma Xia Guo Wei Ma maojie Zhang State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’anShaanxi710049 China National Engineering Research Center for Colloidal Materials School of Chemistry&Chemical EngineeringShandong UniversityJinanShandong250100 China Department of Electronic and Information Engineering Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityKowloon999077 Hong KongChina

In the last few years,organic solar cells(OSCs)have made significant progress in photovoltaic performance,mainly due to the innovative development of active layer materials,especially Y-series and related derivatives as acceptors which have become the key factor that boosts the power conversion ***,to achieve high-performance OSCs,an emerging molecular design strategy of applying flexible alkyl units as linkers to construct non-fully conjugated acceptors has been developed and addressed great *** review highlights the non-fully conjugated photovoltaic materials with Y-series backbone that enable high-performance *** OSCs have been achieved by some representative non-fully conjugated material *** related molecular design strategies are discussed in ***,a brief summary and future prospect are provided in advancing the non-fully conjugated photovoltaic materials with Y-series backbone towards the brighter future.

关键词： Organic solar cells All-polymer solar cells Non-fully conjugated photovoltaic materials Power conversion efficiency Polymer acceptors Organicel ectronics

Tuning Aggregation Behavior of Polymer Donor via Molecular-Weight Control for Achieving 17.1%Efficiency Inverted Polymer Solar Cells

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Chinese Journal of Chemistry 2021年第7期39卷 1941-1947页

作者： Qi Liu Jin Fang Jingnan Wu Lei Zhu Xia Guo Feng Liu maojie Zhang Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Main observation and conclusion Recently,the polymer solar cells(PSCs)based on the PM6 and small molecular acceptor(SMA)Y6 have attracted considerable attention in this community for their outstanding photovoltaic per... 详细信息

关键词： Organic solar cells Power conversion efficiency Polymers Donor-acceptor systems Molecular weight

π-Extended End Groups Enable High-Performance All-Polymer Solar Cells with Near-Infrared Absorption

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Chinese Journal of Chemistry 2023年第23期41卷 3261-3267页

作者： Linfeng Yu Haiqin Xiao Yu Shi Xia Guo Xinxin Xia Xinhui Lu maojie Zhang Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123 China National Engineering Research Center for Colloidal Materials School of Chemistry & Chemical EngineeringShandong UniversityJinanShandong250100 China Department of Physics Chinese University of Hong KongNew TerritoriesHong Kong999077 China

Narrow-bandgap n-type polymers are essential for advancing the development of all-polymer solar cells(all-PSCs).Herein,we developed a novel polymer acceptor PNT withπ-extended 2-(3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1-ylidene)malononitrile(CPNM)end *** to commonly used 2-(3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1ylidene)malononitrile(IC)units,CPNM units have a further extended fused ring,providing the PNT polymer with extended absorption into the near-IR region(903 nm)and exhibiting a narrow optical bandgap(1.37 eV).Furthermore,PNT exhibits a high electron mobility(6.79×10^(−4) cm^(2)·V^(−1)·S^(−1))and a relatively high-lying lowest unoccupied molecular orbital(LUMO)energy level of−3.80 *** blended with PBDB-T,all-PSC achieves a power conversion efficiency(PCE)of 13.7%and a high short-circuit current density(JSC)of 24.4 mA·cm^(−2),mainly attributed to broad absorption(600—900 nm)and efficient charge separation and *** study provides a promising polymer acceptor for all-PSCs and demonstrates thatπ-extended CPNM units are important to achieve high-performance for all-PSCs.

关键词： Polymer acceptors π-Extended end groups High short-circuit current density Narrow-bandgap All-polymer solar cells

An asymmetric non-fused electron-deficient building block for low-cost polymer acceptor in all-polymer solar cells

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Science China Chemistry 2023年第9期66卷 2626-2633页

作者： Haiqin Xiao Linfeng Yu Zhiliang Zhang Haiyan Liang Yu Shi Xia Guo maojie Zhang Yongfang Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China National Engineering Research Center for Colloidal Materials School of Chemistry&Chemical EngineeringShandong UniversityJinan 250100China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

The development of polymerized fused-ring small molecule acceptors(FRA-PAs) has boosted the performance of all-polymer solar cells(all-PSCs).However,these FRA-PAs suffer from lengthy synthesis steps and high production costs due to the high degree of synthetic complexity for fused-ring small molecule acceptors(FRAs).Furthermore,most FRA-PAs exhibit strong batch-to-batch variation,limiting further industrial ***,we designed and synthesized asymmetric non-fused electron-deficient building block TIC-Br with a simple structure(only three synthetic steps),showing a planar configuration,excellent electron affinity,and large dipole moment.A simple polymer acceptor PTIB was further developed by polymerization of TIC-Br and sensitized fluorinated-thienyl benzodithiophene(BDT-TF-Sn).PTIB exhibits a broad absorption from 300 to 800 nm,a suitable lowest unoccupied molecular orbital(LUMO) energy level of-3.86 e V,and moderate electron mobility(1.02×10^(-4)cm^(2)V^(-1)s^(-1)).When matched with PM6,the device achieved the best PCE of 10.11%with a high V_(OC) of 0.97 V,which is one of the highest among those reported *** importantly,PTIB exhibits a lower synthetic complexity index(SC=35.0%)and higher figure-of-merit values(FOM=29.0%) than all the reported high-performance *** polymer also exhibits excellent batch-to-batch reproducibility and great potential for scale-up *** study indicates that TIC-Br is a promising building block for constructing low-cost polymer acceptors for large-scale applications in all-PSCs.

关键词： non-fused electron-deficient building block low-cost polymer acceptors batch-to-batch reproducibility all-polymer solar cells

A Non-Fullerene Acceptor with Chlorinated Thienyl Conjugated Side Chains for High-Performance Polymer Solar Cells via Toluene Processing

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Chinese Journal of Chemistry 2020年第7期38卷 697-702页

作者： Cuangwei Li Jingnan Wu Jin Fang Xia Guo Lei Zhu Feng Liu maojie Zhang Yongfang Li Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Department of Physics and Astronomy and Collaborative Innovation Center of IFSA(CICIFSA) Shanghai Jiao Tong UniversityShanghai 200240China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Small molecular acceptors(SMAs)BTC-2F and BTH-2F,based on heptacyclic benzodi(cyclopentadithiophene)electron-donating core(CBT)with chlorinated-thienyl conjugated and thienyl conjugated side chains,respectively,are designed and *** with non-chlorine acceptor BTH-2F,BTC-2F exhibits slightly blue-shifted absorption spectra,similar the lowest unoccupied molecular orbital(LUMO)(-3.91 eV);deeper highest occupied molecular orbital(HOMO)energy level and higher electron mobility than that of ***6,a wide bandgap polymer,is selected as the donor material to construct bulk heterojunction polymer solar cells processed with nonhalogenated solvent *** optimized PM6:BTC-2F-based device presents a 12.9%power conversion efficiency(PCE),while the PCE of PM6:BTH-2F-based device is only 11.3%.The results suggest that it is an effective strategy to optimize the photoelectric properties of SMAs by incorporating chlorine atom into the conjugated side chains.

关键词： conjugated chlorine chains