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Tetrabenzotriazacorrole and its derivatives as undopea hole transporting materials for perovskite solar cells:Synthesis,device fabrication,and device performance

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Journal of Energy Chemistry 2020年第4期29卷 139-147页

作者： xian-Fu Zhang Chang Liu Jianchang wu Baomin Xu Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina Institute of Applied Photochemistry Hebei Normal University of Science and TechnologyQinhuangdao 066004HebeiChina Shenzhen Engineering Research and Development Center for Flexible Solar Cells Southern University of Science and TechnologyShenzhen 518055GuangdongChina

Phosphorous tetrabenzotriazacorrole(TBC)and its two soluble derivatives(TBC-1 and TBC-2)were synthesized and used for the first time as undoped hole transporting materials(HTMs)in MAPbI3 perovskite solar cells(PSCs).Their performance in PSCs was measured and compared with that of SpiroOMeTAD and phthalocyanine *** fundamental properties related to HTMs are also *** novel HTMs are easily prepared,cost-effective,and solution *** materials exhibited much higher hole transport mobility and broader light absorption than pristine Spiro-OMeTAD and phthalocyanine *** can work efficiently in the absence of any dopant for devices composed of FTO/cp-TiO2/mp-TiO2/MAPbI3/HTM/*** undoped mesoscopic solar cell devices based on TBC exhibited a promising power conversion efficiency(PCE)of up to 16.2%(measured at 100 mWcm2 illumination,AM 1.5 G),together with good long-term stability under ambient *** PCE of 16.2%observed using TBC is remarkably higher than the 11.2%observed using undoped Spiro-OMeTAD and also much better than the 8.70%observed using its phthalocyanine *** to substitution effects,α-substituted TBC-1 was found to be a better HTM thanβ-substituted TBC-2(PCE 11.4%)and unsubstituted TBC-3(PCE 6.81%)under the same *** results provide the basis for further exploiting TBC compounds as a new type of low-cost and effective HTM for PSCs.

关键词： Perovskite solar cell Hole transporting material Tetrabenzotriazacorrole Phthalocyanine

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Corneal ulcer caused by nocardia brasiliensis in a patient with diabetes

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International Journal of Ophthalmology(English edition) 2014年第2期7卷 381-383页

作者： xian-Ning Liu Na An Jie wu Kun Xu Xiu-Ping Zh Sheng-Li mi Department of Ophthalmology the First Hospital of Xi'an Shaanxi Provincial Key Laboratory of Ophthalmology Ophthalmological Institute of Shaanxi Province Biomanufacturing Engineering Laboratory Graduate School at Shenzhen Tsinghua University

Dear Sir,Iam ***-Li mi,from the Biomanufacturing engineering laboratory,Graduate School at Shenzhen,Tsinghua University,Shenzhen,China.I write to present a case report of nocardia brasiliensis in a patient with *** is part of a group of aerobic actinomycetes,widely distributed in *** asteroids and nocardia brasiliensis are the most common human *** infected by nocardia asteroids through the respiratory tract mainly suffer from primary suppurative pulmonary *** of nocardia brasiliensis often occurs in the advanced stages of a progressive disease or immune disorder,especially Cushing syndrome,diabetes,or in patients using corticosteroids,immunosuppressive agents and broad-spectrum antibiotics for long time[1].To our knowledge,the reports of nocardia keratitis was very rare

关键词： Corneal ulcer caused by nocardia brasiliensis in a patient with diabetes

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Reduction of NO_(x)emission based on optimized proportions of mill scale and coke breeze in sintering process

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International Journal of minerals,Metallurgy and Materials 2021年第9期28卷 1453-1461页

作者： Zhi-gang Que xian-bin Ai Sheng-li wu Institute of Energy Research Jiangxi Academy of ScienceNanchang 330096China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

Reducing NO_(x) emission of iron ore sintering process in a cost effective manner is a challenge for the iron and steel industry at *** of the proportion of mill scale and coke breeze on the NO_(x) emission,strength of sinter,and sinter indexes were studied by com-bustion and sinter pot *** showed that the peak value of NO concentration,total of NO emission,and fuel-N conversion rate gradu-ally decreased as the proportions of the mill scale increased because NO was reduced to N_(2) by Fe_(3)O_(4),FeO,and Fe in the mill *** strength of sinter reached the highest value at 8.0wt%mill scale due to the formation of minerals with low melting *** fuel-N conver-sion rate slightly fluctuated and total NO_(x) emission significantly decreased with the decreased proportions of coke breeze because CO forma-tion and content of N element in the sintered mixture ***,the sinter strength also decreased due to the decrease in the amount of the melting ***,results of the sinter pot tests indicated that NO_(x) emission *** sinter indexes performed well when the proportions of mill scale and coke breeze were 8.0wt%and 3.70wt%respectively in the sintered mixture.

关键词： iron ore sinter NO_(x)emission mill scale coke breeze proportion optimization

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Study on improvement of conductivity of Cu-Cr-Zr alloys

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Rare Metals 2007年第2期26卷 124-130页

作者： LI Huaqing XIE Shuisheng wu Pengyue mi Xujun General Research Institute for Nonferrous Metals State Key Laboratory for Fabrication and Processing of Nonferrous Metals Beijing 100088 China

The influence of alloying, heat treatment, and plastic working on the performance of Cu-Cr-Zr alloys was investigated. The precipitated phases were characterized as Cr, Cu51Zr14 and Cu5Zr. Cu-Cr-Zr alloys demonstrate combination properties of high strength and high conductivity after solution treatment, aging treatment, and plastic deformation. Precipitation course of Cr is the main factor that influences the conductivity of Cu-Cr-Zr alloys, while adding Zr in the alloys adjusts the orientation relationship between Cr and matrix, and tends to increase the conductivity of aged Cu-Cr-Zr alloys after deformation.

关键词： Cu-Cr-Zr alloys electrical conductivity alloying heat treatment plastic deformation

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Phase and microstructure Analysis of Cu-Cr-Zr Alloys

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Journal of Materials Science & Technology 2007年第6期23卷 795-800页

作者： Huaqing LI Shuisheng XIE Xujun mi Pengyue wu Suzhou Institute ior Nonierrous Metal Research Suzhou 215026 China State Key Laboratory for Fabrication and Processing of Nonferrous Metals General Research Institute for Nonferrous Metals Beijing 100088 China

Phases of Cu-（0.4%-2.0%） Cr-（0.05%-0.16%） Zr alloys were analyzed in both as cast and deformed state. Solute-rich clusters of Cr, which was supposed to form during aging treatment, were observed in as cast state; along with the morphology character, corresponding preferential orientation of Cr phase in as cast state was also investigated. Precipitates were observed to distribute in the matrix with a bimodal distribution, viz. coarse precipitates with dimension larger than several hundred nanometers and fine precipitates with size of 2- 10 nm. Three types of intermetallics, the common compound of Cu51Zr14, correspondingly infrequent Cu5Zr and rare Cu5Zr3, were characterized in different samples.

关键词： Cu-Cr-Zr alloy Solute-rich cluster Intermetallic compound microstructure

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A micro-Mechanism Model for Porous Media

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Communications in Theoretical Physics 2009年第11期52卷 936-940页

作者： wu Jin-Sui YIN Shang-xian Department of Basic Teaching North China University of Science and Technology Beijing 101601 China Faculty of Safety Engineering North China University of Science and Technology Beijing 101601 China

Based on the tortuous-expanding path/channel model,a micro-mechanism model for porous media is *** proposed model is expressed as a function of tortuosity,porosity,resistance coefficient,and fluid *** parameter in the proposed model has clear physical *** results show that the model predictions are ingood agreement with those from the existing experimental data.

关键词： resistance porous media micro-mechanism model

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Lightweight,self-cleaning and refractory FeCo@MoS_(2)PVA aerogels:from electromagnetic wave-assisted synthesis to flexible electromagnetic wave absorption

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Rare Metals 2023年第4期42卷 1294-1305页

作者： Sai-Bo Qian Guang Liu mi Yan Chen wu School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhou310027China

The emergence of wearable and foldable electronic devices urges advanced electromagnetic(EM)wave absorbers with maintained performance under *** FeCo@MoS_(2)poly vinyl alcohol(PVA)aerogels have been fabricated with the assistance of EM waves for simultaneous splitting of the MoS_(2)flakes and dispersive growth of FeCo *** resultants in-return have been used for EM wave absorption with excellent performance,providing minimum reflection loss(RL_(min))of-40.7 dB and a broad effective absorption bandwidth(EAB)of 6.4 GHz at a thickness of 2.5 ***-time compression has been introduced to reveal the evolution of EM *** aerogels maintain satisfactory performance even under 50%compression due to the balance of impedance matching and *** the deterioration of impedance matching,the attenuation is significantly enhanced due to both strengthened conductive loss and magnetic *** addition,features such as lightweight,self-cleaning and refractory can be achieved for the aerogels for applications in complex *** such this work not only provides a versatile synthetic route assisted by EM wave energy,but also insights on the evolution of absorption performance under deformation together with the design strategy of multifunctional flexible wave absorbers.

关键词： Electromagnetic(EM)wave assistance Multifunctional aerogels Deformative wave absorption Impedance matching Conductive loss Magnetic loss

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Surface Temperature Change of U75V 60 kg/m Heavy Rail During Heat Treatment

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Journal of Iron and Steel Research International 2013年第2期20卷 33-37,67页

作者： KANG Hao wu Di ZHAO xian-ming State Key Laboratory of Rolling and Automation Northeastern University

The U75V 60 kg/m heavy rail samples were heated to 900 ℃ in a resistance furnace for a fixed duration of 50 min. Under this condition, the samples were austenitized totally. Then, the samples were dragged out of furnace and cooled for 25 s in the open air. After that, the samples entered into the air spraying channel, and were cooled from the top and both sides by compressed air. During this period, main technical parameters were changed such as the distance between spray nozzles and surface of rail head, air pressure, air spraying time and air temperature. So under laboratory condition, optimal heat-treating parameters of U75V 60 kg/m heavy rail were determined as the distance between spray nozzles and surface of rail head of 15 mm, air pressure of 0.26 MPa, cooling time of 80 s, and air temperature of 28 ℃. The surface temperature at different positions of heavy rail was measured before and after heat treatment, and the temperature changing law was determined. The self tempering occurred on the surface of rail head after heat treatment, and the tempering temperature became the largest （about 3 min） after heat treatment, separately 528, 524 and 536 ℃ at the center, top fillet and bottom fillet of rail head. The heavy rail was cooled in open air after heat treatment; during this period, the temperature gap on the surface of heavy rail became smaller and smaller, and was reduced to zero when being cooled for 20 min.

关键词： temperature change heavy rail heat treatment

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IRAS F21013-0739:a possible evolutionary successor of an ultraluminous infrared galaxy

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Research in Astronomy and Astrophysics 2011年第4期11卷 419-433页

作者： xian-min Meng Hong wu Chen Cao National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Shandong University at Weihai Weihai 264209 China

We present a stellar population synthesis study of a type II luminous infrared galaxy, IRAS F21013-0739. Optical images show clear characteristics of a merger remnant. The H-band absolute magnitude is MH = -25.1, which is -2 times as luminous as L＊ galaxies. Stellar populations are obtained through the stellar synthesis code STARLIGHT. We find that it experienced a recent starburst （SB） phase - 100 Myr ago. By reconstructing the ultraviolet-to-optical spectrum, and adopting Calzetti et al. and Leitherer et al.＇s extinction curves, we estimate the past infrared （IR） luminosities of the host galaxy and find it may have experienced an ultraluminous infrared galaxy phase which lasted for about 100 Myr. Its i-band absolute magnitude is mi = -22.463, and its spectral type shows type 2 active galactic nucleus （AGN） characteristics. The mass of the supermassive black-hole is estimated to be MBH = 1.6 × 107 M⊙ （lower- limit）. The Eddington ratio Lbol/LEdd is 0.15, which is typical of Palomar-Green （PG） quasars. Both the nuclear SB and AGN contribute to the present IR luminosity budget, and the SB contributes -67%. On the diagram of IR color versus IR/opfical excess, it is located between IR quasars and PG quasars. These results indicate that IRAS F21013-0739 has probably evolved from a ULIRG, and it can possibly evolve into an AGN.

关键词： infrared galaxies -- galaxies evolution -- galaxies starburst --galaxies: individual (IRAS F21013-0739) -- galaxies stellar content

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New Wronskian Representation of Solution for a Variable-Coefficient Kadomtsev-Petviashvili Equation

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Chinese Physics Letters 2013年第6期30卷 46-49页

作者： wu Jian-Ping GENG xian-Guo Department of Mathematics Zhengzhou University100 Kexue RoadZhengzhou 450001

Utilizing the Wronskian technique,a new Wronskian representation is proposed for a variable-coefficient Kadomtsev–Petviashvili(vcKP)***,some particular forms of Wronskian determinant solutions,includingN-soliton solu... 详细信息

关键词： equation. soliton rational

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