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Recent progress of hybrid cathode interface layer for organic solar cells

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Journal of Energy Chemistry 2024年第4期91卷 383-406页

作者： Jianru Wang Dan zhou Zhentian Xu Yujie Pu Senmei lan Fang Wang Feiyan Wu Bin Hu Yongfen Tong Ruizhi Lv Honglin Chu Lie Chen key laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong UniversityNanchang 330063JiangxiChina College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031JiangxiChina

Organic solar cells(OSCs)have gained conspicuous progress during the past few decades due to the development of materials and upgrading of the device *** power conversion efficiency(PCE)of the single-junction device had surpassed 19%.The cathode interface layer(CIL),by optimizing the connection between the active layer and the cathode electrode,has become a momentous part to strengthen the performances of the ***,CIL is also indispensable to illustrating the working mechanism of OSCs and enhancing the stability of the *** this essay,hybrid CILs in OSCs have been ***,the advancement and operating mechanism of OSCs,and the effects and relevant design rules of CIL are briefly concluded;secondly,the significant influence of CIL on enhancing the stability and PCE of OSCs is presented;thirdly,the characteristics of organic hybrid CIL and organic-inorganic hybrid CIL are ***,the conclusion and outlook of CIL are summarized.

关键词： Organic solar cells Theoperation mechanism Organic hybrid cathode interface layer Organic-inorganic hybrid CIL

Effects of SrTiO3.buffer layer on structural and electrical properties of Bi3.15Nd0.85Ti3.12 thin films prepared by a chemical method

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Progress in Natural Science:materials International 2012年第3期22卷 219-223页

作者： H. Peng a,b, Y. Zhang a,b, Y.C. zhou a,b, a key laboratory of Low Dimensional {3. and Application Technology of ministry of education, Xiangtan university, Xiangtan 411105, Hunan, china b Faculty of {3., Optoelectronics and Physics, Xiangtan university, Xiangtan 411105, Hunan, china [a] key laboratory of Low Dimensional materials and Application Technology of{3. Xiangtan University Xiangtan 411105 Hunan China [b] Faculty of materials Optoelectronics and Physics Xiangtan University Xiangtan 411105 Hunan China

Ferroelectric Bi3.15Nd0.85Ti3.12 (BNT) thin films have been grown on Pt/Ti/SiO2/Si substrates at 750 ℃ by a chemical solution deposition method using SrTiO3.(STO) as a buffer layer. The influence of STO buffer layer on the phase and microstructure of BNT thin films was examined by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrical properties were investigated both for BNT thin films with and without STO buffer layer. The results showed that STO buffer layer strongly influenced the microstructure and electric properties of BNT thin films. BNT ferroelectric thin films with STO buffer layer exhibited the good crystallization behavior, the enhanced fatigue characteristics and excellent leakage current properties. This indicates that the introduction of the STO buffer layer prevents the interfacial diffusion and charge injection between BNT thin films and the substrate effectively and improves the interface quality.

关键词： BNT ferroelectric films STO buffer layers Chemical solution deposition Electrical properties

Probability parametric imaging with DCE-MRI data to identify prostate cancer in the peripheral zone

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Progress in Natural Science:materials International 2006年第9期16卷 948-953页

作者： HUANG Xinrui, WANG Qiang, XU Yufeng, WANG Xiaoying and BAO Shanglian ( The key laboratory of Medical Physics and Engineering, Peking university, Beijing 100871,{3. The Medical School of Peking university, Beijing 100083.{3. 3. The First Hospital of Peking university, Beijing 10003.,{3.) [a]The key laboratory of Medical Physics and Engineering Peking University Beijing China [b]The Medical School of Peking university Beijing China [c]The First Hospital of Peking university Beijing China

To quantitatively analyze prostate dynamic contrast-enhanced magnetic resonance images (DCE-MRI), a retrospective study was carried out to construct a mathematical model to predict whether a lesion is cancerous or not. With known diagnosis of 52 re-gions-of-interest (10 malignant, 26 benign and 16 normal) in peripheral zone (PZ) of prostate from 18 patients undergoing needle biopsy and 8 normal volunteers, we combined feature parameters (k1, k2 and tp) from the linear-slope model with logistic regression to determine the statistical probability model. Prostate cancerous probability maps were derived using the model on each subject to examine the correlation between the model-based prediction and the known diagnosis. Compared the model prediction results of 52 regions-of-interest with the histopathologic results, the total agreement rate was 90.4 % ; the agreement rate was 60 % for the malignant and 97. 6 % for the nonmalignant. The diagnostic results only referencing the probability maps by two radiologists showed a high agreement in tissue characteristics and lesion location with the combining results from other diagnostic techniques such as PSA (prostate specific antigen) level and MRS (magnetic resonance spectroscopy) .

关键词： time-intensity curve prostate DCE-MRI logistic regression probability parametric image.

Development of Novel Binder for Hardmetal Powder Extrusion Molding

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Journal of materials Science & Technology 2002年第6期18卷 569-571页

作者： Jicheng zhou and Baiyun HUANGState key laboratory for Powder Metallurgy, Central South {3. , Changsha 410083. china Lab. for Power Metall. Central South Univ. Changsha 410083 China

A novel binder system for hardmetal powder extrusion moulding (PEM) process has been developed. The binder system comprises a major fraction of a mixture of low molecular weight components (LMWCs) and a minor fraction of very finely dispersed polymer. The feedstocks are mixed as a thick slurry at a suitable temperature and are rapidly homogenized by stirring at an adequate shear force. The binders are removed by thermal debinding. The thermal debinding mechanism has been investigated by thermogravimetry (TG) and differential thermogravimetry (DTG). At the first stage of debinding, the LMWCs are removed. These open up pore channels which allows much faster removal of the remaining polymer component during the subsequent stage. The microstructures of the moulded green parts were observed by scanning electron microscopy (SEM). The debound samples were sintered at different temperatures, and the sintered samples properties were measured.

关键词： Binder Thermal debinding Hardmetal powder extrusion moulding

Hydrothermal synthesis of vanadium oxide nanotubes by a facile route

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Rare Metals 2006年第z1期25卷 88-93页

作者： HUANG Chunming LIU Xueqin KONG Lingbin zhou Haijia LIU Yaqiang QIU Jiawen WANG Yinyue Department of Physics Lanzhou University Lanzhou 730000 China Department of Physics Lanzhou University Lanzhou 730000 China lanzhou Institute of Physics Lanzhou 730000 China State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials Lanzhou University of Technology Lanzhou 730050 China Department of Physics Lanzhou University Lanzhou 730000 China Department of Physics Lanzhou University Lanzhou 730000 China Lanzhou Institute of Physics Lanzhou 730000 China Department of Physics Lanzhou University Lanzhou 730000 China

Vanadium oxide nanotubes were synthesized by hydrothermal treatment from V2O5·nH2O sols as precursor and dodecylamine as structure-directing template. The morphology and structure of the nanotubes were characterized by SEM, TEM, XRD, TG-DTA and FTIR. The experimental results reveal that the duration of the hydrothermal treatment is of importance for obtaining VOx-NTs which have a layered structure. TG-DTA study indicates that V5+ cations in nanotubes are partially reduced to V4+ cations. The results from FTIR spectra indicate the difference in V-O vibrations between before and after hydrothermal treatment. From the results, it suggests that during hydrothermal treatment, the rearrangement of the vanadium oxide structure leads to the formation of VOx nanotubes from lamellar structure because of the presence of V4+ species.

关键词： vanadium oxide nanotubes hydrothermal synthesis V2O5 sols

Preparation of Gd_(0.3.Ce_(0.7)O_(1.85-x) Single Buffer Layer for Coated Conductor Using a Novel-PACSD Method

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稀有金属材料与工程 2011年第S3期40卷 338-341页

作者： Lei Ming1, Wu Wei1, Mu Liyun1, Zhao Yong1, 2 1 key laboratory of magnetic Levitation and Maglev Trains ({3. of education of china), Southwest Jiaotong university, Chengdu 61003., china 2 university of New South Wales, Sydney 2052, Australia SW Jiaotong Univ Superconduct R&D Ctr Key Lab Magnet Levitat & Maglev Trains Minist Educ China Chengdu 610031 Peoples R China Univ New S Wales Sydney NSW 2052 Australia

To increase the critical thickness of CeO2 single buffer layer, the polymer assisted chemical solution deposition (PACSD) approach has been adopted to prepare a single buffer layer of Gd0.3.e0.7O1.85-x (GCO) on bi-axially textured Ni-5%W alloy substrate, and the influences of different annealing temperatures on texture and microstructure of the buffer layer has also been studied in this paper. The results demonstrate that a well textured, dense and smooth GCO single buffer layer with thickness of 180 nm has been obtained at 1100 ℃ annealing treatment. GdBa2Cu3.7-y (GBCO) film has been deposited on GCO buffered substrate via the similar approach, which is also well textured, dense and smooth. All these show that preparation of GCO buffer layer by PACSD method is an effective approach to prepare single buffer layer for large scale production.

关键词： single buffer layer polymer assisted chemical solution deposition Gd0.3.e0.7O1.85-x

High Energy Micro-arc Alloying of ZM5 Mg Alloy by Mg-Y Electrode under Liquid

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稀有金属材料与工程 2011年第S4期40卷 181-184页

作者： Chen Changjun,Zhang Min,Su Yanzhan,Zhang Shichang,zhou Jialin key laboratory for Ferrous Metallurgy and Resources Utilization of{3.,Laser Processing Research Center,College of materials and Metallurgy,Wuhan university of Science& Technology,Wuhan 43.081,china Wuhan Univ Sci &Technol Laser Proc Res Ctr Key Lab Ferrous Met & Resources Utilizat Minist EducColl Mat & Met Wuhan 430081 Peoples R China

High-energy micro-arc alloying (HEMAA) is a consumable electrode,micro-welding process which uses electrical pulses that are typically three orders of magnitude shorter than in other pulse welding *** durations of a few microseconds combined with pulse frequencies in the 0.1 to 2-kilohertz range thus allow substrate heat dissipation over ～99% of the duty cycle while heating only about 1%.The cooling rates may approach 105 to 106 ℃/s,depending on *** obtained coating can produce unique corrosion and tribological *** require no special surface preparation and nearly any metal,alloy or cermets can be applied to metal *** paper details experimental results when alloying Mg base alloy ZM5,using Mg-Y electrodes with a water-based dielectric *** morphology and the composition of the alloying was analyzed by scanning electron microscope(SEM) and energy dispersive X-ray analysis(EDX).At the discharge energies employed,a thin recast layer thickness and rougher layers were formed on the *** layers were in general *** analysis showed that the Y transferred from the solid electrodes to the workpiece surface.

关键词： high-energy micro-arc alloying (HEMAA) surface alloying/modification Mg alloy Mg-Y

Phase transition in the Zr_(60)Al_(15)Ni_(25) bulk metallic glass subjected to rolling at room temperature

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Science china(Technological Sciences) 2006年第6期49卷 655-662页

作者： YAN Zhijie1, 2, LI Jinfu1, zhou Yaohe1 & WU Yanqing3.1. State key laboratory of Metal Matrix Composites, School of {3. Science and Engineering, Shanghai Jiao Tong university, Shanghai 20003., china 2. School of {3. Science and Engineering, Taiyuan university of Science and Technology, Taiyuan 03.024, china 3. School of Environmental Science and Engineering, Shanghai Jiao Tong university, Shanghai 20003., china State key laboratory of Metal Matrix Composites School of Materials Science Engineering Shanghai Jiao Tong University Shanghai 200030 China School of materials Science Engineering Taiyuan University of Science Technology Taiyuan 030024 China School of Environmental Science Engineering Shanghai Jiao Tong University Shanghai 200030 China

The microstructure evolution of the Zr60Al15Ni25 metallic glass during rolling at room temperature is investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC); high-resolution transmission electron microscopy (HREM). The results show that the values of full width at half maximum (FWHM) of the XRD patterns; exothermic enthalpy ΔH of DSC plots do not monotonically change with the variation of deformation degrees . As is not large than 20%, the values of FWHM; ΔH are lower than that of the as-cast state. When reaches 3.%, the values of FWHM; ΔH become larger than that of the as-cast state, while their values begin to decrease again as reaches about 85%. These results indicate that the reversible transitions between ordered; disordered atomic configurations occur during rolling, which is further verified by the HREM images. The reversible phase transition can be explained by the competition between the diffusion controlled reordering; shear-induced disordering during rolling.

关键词： metallic glasses, plastic deformation, phase transformations, shear bands.

Preparation and characterization of CoFe_2O_4/TiO_2 magnetic composite films

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Science china Chemistry 2008年第9期51卷 842-847页

作者： TIAN XiaoXia1, QU ShaoBo1,2, PEI ZhiBin1 & WANG BinKe1,2 1 College of Science, Air Force Engineering university, Xi’an 710051, china 2 Electronic materials Research {3., key {3. of ministry of education, Xi’an Jiaotong university, Xi’an 710049, china College of Science Air Force Engineering University Xi’an 710051 China Electronic materials Research laboratory Key Laboratory of Ministry of Education Xi’an Jiaotong University Xi’an 710049 China

CoFe2O4/TiO2 magnetic composite films were prepared using the sol-gel method with tetrabutyltitanate and metallic chlorates as starting materials. The effects of heat treatment temperatures on micro- structures and on magnetic properties were studied. The microstructure and properties of the samples at different heat treatment temperatures were characterized by X-ray diffraction, Raman spectrum, scanning electron microscopy, polarized microscopy and vibrating sample magnetometry. The results show that crystals of different substances grow up independently. Cobalt ferrite is evenly embedded into the titanium dioxide matrix in the prepared composite films. The {3. of the composite films is enhanced with an increase of the heat temperature.

关键词： CoFe2O4/TiO2 composite films magnetism sol-gel