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Organic thin-film solar cells:Devices and materials

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Science china Chemistry 2012年第4期55卷 553-578页

作者： LI ZhiGang1, ZHAO XinYan2, LI Xin1,2, GAO ZhiQiang1, MI BaoXiu1 & HUANG Wei2 1Jiangsu Engineering Centre for Flat-Panel Displays & Solid-state Lighting and School of Materials Science & Engineering, Nanjing University of Posts & Telecommunications, Nanjing 210046, china 2Key laboratory for Organic Electronics & Information Displays (KLOEID) Institute of advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210046, china Jiangsu Engineering Centre for Flat-Panel Displays & Solid-state Lighting and School of Materials Science & Engineering Nanjing University of Posts & Telecommunications Nanjing China Key laboratory for Organic Electronics & Information Displays (KLOEID) Institute of advanced Materials (IAM) Nanjing University of Posts & Telecommunications Nanjing China

In recent years, the performance of organic thinfilm solar cells has gained rapid progress, of which the power conversion efficiencies （r/p） of 3%-5% are commonly achieved, which were difficult to obtain years ago and are improving steadily now. The r/p of 7.4% was achieved in the year 2010, and r/p of 9.2% was disclosed and confirmed at website of Mitsubishi Chemical in April, 2011. The promising future is that the r/p of 10% is achievable according to simulation results. Apparently, these are attributed to material innovations, new device structures, and also the better understanding of device physics. This article summarizes recent progress in organic thinfilm solar cells related to materials, device structures and working principles. In the device functioning part, after each brief summary of the working principle, the methods for improvements, such as absorption increment, organic/electrode interface engineering, morphological issues, are addressed and summarized accordingly. In addition, for the purpose of increasing exciton diffusion efficiency, the benefit from triplet exciton, which has been proposed in recent years, is highlighted. In the active material parts, the chemical nature of materials and its impact on device performance are discussed. Particularly, emphasis is given toward the insight for better understanding device physics as well as improvements in device performance either by development of new materials or by new device architecture.

关键词： organic – solar cell – photovoltaic – devices – materials

The characteristic properties of PEDOT nano-particle based on reversed micelle method

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Science china(Technological Sciences) 2010年第9期53卷 2355-2362页

作者： ZHENG HuaJing,JIANG YaDong,XU JianHua & YANG YaJie State Key laboratory of Electronic thin films & Integrated Devices,School of Optoelectronic Information,University of Electronic Science and Technology of china,Chengdu 610054,china State Key laboratory of Electronic thin films & Integrated Devices School of Optoelectronic Information University of Electronic Science and Technology of China Chengdu China

Based on the study of a new type of conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT),this paper focuses on the preparation and the materials properties of PEDOT nanoparticles made by reversed micelle *** on optical,electrical and the thermal stability of PEDOT nanoparticles were carried *** main results were as follows: The small-sized PEDOT nanoparticles were prepared by different methods,such as ultraviolet/visible (UV-Vis) spectroscopy,fourier-transform infrared (FT-IR) spectrum,scanning electron microscopy (SEM) and so *** Bragg peaks of nanoparticles at 6.7°,12.7°,25° were observed by XRD and the good orientation of molecular chain was attributed to the effective doping of toluene-p-sulfonic acid,which also resulted in an enhancement of thermal stability of nanoparticles compared with the conventional ***,the gas sensitivity of nanoparticles deposited on quartz crystal microbalance (QCM) was studied and the nanopartices deposited device exhibited excellent sensitivity to HCl gas at low *** sensitivity of the nanoparticles by the reverse micelle was better than that of the common PEDOT particles.

关键词： poly (3 4-ethylenedioxythiophene) conducting polymer reversed micelle n-particle photoelectric properties thermal stability

Controlling of stress and distortion in thin copper plate by welding with trailing peening

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Rare Metals 2007年第S1期26卷 216-219页

作者： LIU Xuesong,WANG Ping,ZHOU Guangtao,and FANG Hongyuan State Key laboratory of advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,china Harbin Inst Technol State Key Lab Adv Welding Prod Technol Harbin 150001 Peoples R China

Welding with trail peening(WTP) is applied in T1 thin copper plate to reduce the residual stress and distortion firstly,which is the very trouble in copper *** main principle for this new technology was *** make a complete comparison,both experiments and numerical simulations of thin copper plate were carried out under WTP as well as conventional welding(CW).The results confirm that WTP can reduce longitudinal residual stress in welding joint *** peak value of flexure distortion decreases from 30mm under CW to only 9mm by WTP,that is to say,only 30% of CW.

关键词： WTP residual stress flexure distortion FEA

Grain Size and Wettability of TiO_2/SiO_2 Photocatalytic Composite thin Filing

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Rare Metals 2001年第2期20卷 81-86页

作者： Jiaguo Yu, Xiujian Zhao, Jimmy C Yu, Jun Lin (State Key laboratory of advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, china Deportment of Chemised The Chinese University of Hong Kong, Hong Kong, 武汉工业大学材料复合新技术国家重点实验室湖北武汉 430070 香港大学化学系香港 430070

The uniform transparent TiO2/SiO2 photocatalytic composite thin films are prepared by sol-gel method on the soda lime glass substrates, and characterized by UV-visible spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), BET surface area, FTIR spectroscopy and X-ray photoelectron spectroscopy (XPS). It was found that the addition of SiO2 to TiO2 thin films can suppress the grain growth of TiO2 crystal, increase the hydroxyl content on the surface of TiO2 films, lower the contact angle for water on TiO, films and enhance the hydrophilic property of TiO2 films. The super-hydrophilic TiO2/SiO2 photocatalytic composite thin films with the contact angle of 0((o) under bar) are obtained by the addition of 10%-20% SiO2 in mole fraction.

关键词： sol-gel method TiO2/SiO2 photocatalytic composite thin films grain size wettability

Surface configurations during annealing of sputter-deposited NiTi thin films

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Chinese Science Bulletin 1997年第23期42卷 2019-2020页

作者： GONG Fengfei, JIANG Enyong, SHEN Huimin and WANG Yening1. Department of Applied Physics, Tianjin University, Tianjin 300072 The National laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008 Center for advanced Studies in Science and Technology of Microstructures, Nanjing 210093, china 2. Department of Physics, Tianjin University, Tianjin 300072, china 3. National laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, Center for advanced Studies in Science and Technology of Microstructures, Nanjing 210093, china. Department of Applied Physics Tianjin University Tianjin The National laboratory of Solid State Microstructures Nanjing University Nanjing Center for advanced Studies in Science and Technology of Microstructures Nanjing China Department of Physics Tianjin University Tianjin China National laboratory of Solid State Microstructures Nanjing University Nanjing

SPUTTER-DEPOSITED NiTi thin films are becoming more and more important because of their po-tential applications to the intelligent thin-film systems. The as-deposited NiTi thin films pre-pared by magnetron sputtering are generally amorphous. Because the amorphous NiTi thinfilms cannot show shape memory effect, they should be crystallized under appropriate anneal-

关键词： NiTi Surface configurations during annealing of sputter-deposited NiTi thin films

Superelasticity of NiTi Shape Memory Alloy thin films

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Journal of Materials Science & Technology 2005年第3期21卷 319-323页

作者： Zhenyu YUAN, Dong XU, Zhican YE and Bingchu CAI Key laboratory for thin Film and Microfabrication Technology of Ministry of Education, Research Institute of Micro/Nanometer Science and Technology, Shanghai Jiao Tong University, Shanghai 200030, china laboratory for thin Film and Microfabrication Technology Research Institute of Micro/Nanometer Science and Technology Shanghai Jiaotong University Shanghai 200030 China

The superelastic properties of NiTi thin films prepared with sputtering were studied. To characterize their superelasticity, tensile and bulging and indentation tests were performed. The measured mechanisms using thes... 详细信息

关键词： Shape memory alloy NiTi thin film Superelasticity

thin bed responses and correction methods for cased hole density logging

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Petroleum Science 2008年第4期5卷 322-325页

作者： Wu Wensheng Zhang Yuling State Key laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China china National Logging Corporation CNPC Beijing 100101 China

The study of the thin bed responses and correction methods in cased hole density logging can provide a theoretical basis for research to improve data processing methods. By using the Monte Carlo program MCNP, the change of detector count from thin beds with the vertical depth was calculated at different casing thicknesses. The calculation showed that with the low density thin bed moving upward, detector count first increased to a maximum then decreased. The responses of a thin bed with a high density were opposite to those of a thin bed with a low density. The change curve was symmetrical, and the maximums or minimums appeared at the midpoint between the detector and source. Besides, detector count increased with increasing thin bed thickness. At a specific thin bed thickness, further increase of thin bed thickness resulted in a slow increase of detector count then the count rate leveled off. In actual logging, the influence of adjacent formations on density log measurements can be ignored. Finally, based on numerical simulation correction methods for the dual influence of casing and thin beds are discussed.

关键词： Density logging in cased hole thin bed response casing MCNP program correcting

Effect of electrolytes on electrochemical properties of graphene sheet covered with polypyrrole thin layer

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Progress in Natural Science:Materials International 2011年第6期21卷 460-466页

作者： Ya-meng CAI~(1,2),Zong-yi QIN~1,Long CHEN~2 1.State Key laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University,Shanghai 201620,china 2.College of Material Science and Engineering,Donghua University,Shanghai 201620,china State Key laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University Shanghai 201620 China College of Material Science and Engineering Donghua University Shanghai 201620 China

Graphene sheet(GS) was successfully covered with a polypyrrole(PPy) thin layer through in situ chemical oxidative polymerization of pyrrole monomers in aqueous solution by using GS as a support material and ferric trichloride as an *** resulting nanocomposite was studied by field emission scanning electron microscopy(FE-SEM),Fourier transform infrared spectroscopy(FT-IR) and electrical measurements,including cyclic voltammetry(CV),galvanostatic charge/discharge experiment (GCD),and impedance spectroscopy(EIS).It has been found that the nanocomposite exhibited a typically curved and layer-like structure,and conformational change of PPy chains occurred due to the n-n stacking interaction between the graphitic structures in GS and aromatic rings of the PPy *** attention was paid to the effect of electrolytes on electrochemical properties of the nanocomposites,as expected,electrochemical performance was dependent on the nature of the electrolyte,and the neutral electrolytes containing alkali metal ions were found to be very suitable for GS/PPy *** with the pure PPy,the nanocomposite possessed larger specific capacitance and lower internal impedance,indicating that the nanocomposite can be a promising candidate as electrode material for supercapacitors.

关键词： nanocomposites graphene polypyrrole electrochemical property electrolyte

Oxygen pressure dependent electro-resistance in La_(0.9)Sr_(0.1)MnO_3 thin films grown by laser molecular beam epitaxy

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Science china(Physics,Mechanics & Astronomy) 2008年第3期51卷 232-236页

作者： OUYANG SiHua1,2,WANG ChunChang2,LIU GuoZhen2,HE Meng2, JIN KuiJuan2,DANG ZhiMin1 & L HuiBin21 College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,china 2 Beijing National laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100080,china College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China Beijing National laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing China

We report here studies on the influence of oxygen pressure on the electroresis-tance behavior of La0.9Sr0.1MnO3 thin films fabricated by laser molecular beam epi-taxy. It was found that the film deposited at lower oxygen pressure shows larger c-axis parameter,higher resistance,and more distinct electroresistance. These results reveal that the electroresistance of manganite thin films can be tuned by the conditions of film fabrication.

关键词： La0.9Sr0.1MnO3 thin film electroresistance effect laser molecular beam epitaxy