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2020 International Conference on Environment Science and advanced Energy Technologies, ESAET 2020

作者： Lu, Xiuzhen Sun, Yongqian Jiang, Ziwei Zhang, Maomao Lin, Yang SMIT Center School of Mechatronic Engineering and Automation Shanghai University Shanghai200072 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai200072 China

A new method for fabrication of ZnO nanorods was reported. ZnO nanorods were synthesized by electrospinning technology and heat treatment with polyvinyl alcohol (PVA) and Zinc acetate as precursor. After heat treatment of ZnO electrospun nanofibers, ZnO nanorods were obtained. Morphology of ZnO nanorods was characterized by Scanning electron microscopy (SEM). Various morphologies, such as sphere, flower and plane composed of ZnO nanorods were observed. Transmission electron microscopy (TEM) images demonstrated ZnO nanorods are a single crystalline structure with a diameter of 100-180 nm. The hexagonal wurtzite structure of ZnO nanorods was determined by X-ray diffraction (XRD) pattern and Raman spectra. © Published under licence by IOP Publishing Ltd.

关键词： Electrospinning

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Hole transporting material 5,10,15-tribenzyl-5Hdiindolo[3,2-a:3',2'-c]-carbazole for efficient optoelectronic applications as an active layer

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Chinese Physics B 2015年第2期24卷 428-431页

作者：郑燕琼 William J.Potscavage Jr 张建华魏斌黄荣娟 Key Laboratory of Advanced Display and System Applications Ministry of EducationShanghai University Center for Organic Photonics and Electronics Research(OPERA) and International Institute for Carbon Neutral Energy Research(WPI-I2CNER) Kyushu University

In order to explore the novel application of the transparent hole-transporting material 5,10,15-tribenzyl-5Hdiindolo[3,2-a：3＇,2＇-c]-carbazole（TBDI）,in this article TBDI is used as an active layer but not a buffer layer in a photodetector（PD）,organic light-emitting diode（OLED）,and organic photovoltaic cell（OPV） for the first ***,the absorption and emission spectra of a blend layer comprised of TBDI and electron-transporting material bis-（2-methyl-8-quinolinate） 4-phenylphenolate（BAlq） are *** on the absorption properties,an organic PD with a peak absorption at 320 nm is fabricated,and a relatively-high detectivity of 2.44×10^（11） cm· Hz^（1/2）/W under 320-nm illumination is *** TBDI/tris（8-hydroxyquinoline） aluminum（Alq_3） OLED device exhibits a comparable external quantum efficiency and current efficiency to a traditional 4,4-bis[N-（l-naphthyl）-N-phenyl-amino]biphenyl（α-NPD）/Alq_3 OLED.A C_（70）-based Schottky junction with 5 wt%-TBDI yields a power conversion efficiency of 5.0%,which is much higher than 1.7%for an α-NPD-based junction in the same *** results suggest that TBDI has some promising properties which are in favor of the hole-transporting in Schottky junctions with a low-concentration donor.

关键词： 5 10 15-tribenzyl-5H-diindolo[3 2-a：3＇ 2＇-c]-carbazole photodetector organic light-emitting diode Schottky junction

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Study into the Application of Single-Wall Carbon Nanotubes in Isotropic Conductive Adhesives

Study into the Application of Single-Wall Carbon Nanotubes i...

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2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Dongsheng Li Qiong Fan Yajun Duan Huiwang Cui Zhichao Yuan Lilei Ye Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S SHT Smart High Tech AB Fysikgrand 3 41296 Gothenburg SWEDEN Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S

Isotropic conductive adhesives (ICAs) with stable contact resistance and high thermal conductivity are highly desirable. In this paper, a new ICA filled with silver fillers and singlewall carbon nanotubes (SCNTs) was developed. SCNTs were acidified in a mixture of 98% H2SO4 and 68% HNO3 with a volume rate of 3:1 at 50 0C for 3 h. Carboxyl and hydroxyl groups were produced on SCNTs, and the purity of SCNTs also greatly improved. To prepare the ICAs, acidified SCNTs were firstly ultrasonically dispersed in acetone, then added into the matrix resin, and finally mixed with silver fillers. The bulk resistivity of the fabricated ICAs filled with silver fillers and acidified SCNTs was larger, their lap shear strength lower, their contact resistance stability improved, and their moisture absorption remained almost unchanged. In the curing process, the released heat was greatly reduced and transferred to the surroundings for good thermal conductivity of SCNTs, but the curing temperature was not affected. Therefore, acidified SCNTs can be used in ICAs, and in general, will create a good effect on ICAs.

关键词： Silver Conductivity Curing Contact resistance Absorption Moisture Mechanical factors

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A new pixel structure for OLEDoS micro-display

A new pixel structure for OLEDoS micro-display

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International Conference on display Technology, ICDT 2019

作者： Guo, Aiying Ran, Feng Zhang, Jianhua Microelectronic Research and Development Center Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai China

ISBN: (纸本)9781510896161

In this paper, we propose a new pixel structure for the organic Light Emitting Diode (OLED) 0.65 inch SVGA resolution micro-display with 8 bit gray level. The proposed pixel structure is composed of 4 MOSFETS and one capacitor to integrate the pixel structure in the restricted pixel area ( 9um 9um ) using 0.18um technology. The simulation result shows that the maximum error of emission current occurs at high gray level. Author keywords © 2019, John Wiley and Sons Inc. All rights reserved.

关键词： MOSFET devices

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LARGE-EDDY SIMULATION OF THREE-DIMENSIONAL VORTICAL STRUCTURES FOR AN IMPINGING TRANSVERSE JET IN THE NEAR REGION

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Journal of Hydrodynamics 2007年第3期19卷 314-321页

作者： FAN Jing-yu ZHANG Yan WANG Dao-zeng Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Applications （Shanghai University） Ministry of Education and SMIT Center Shanghai University Shanghai 200072 China Department of Applied Mechanics Chalmers University of Technology SE-412 96 Gothenburg Sweden Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

The three-dimensional vortical structures for an impinging transverse jet in the near region were numerically investigated by means of Large-Eddy Simulation （LES）. The LES results reproduced the skewed jet shear layer vortices close to the jet nozzle and the scarf vortex in the near-wall zone in good agreement with the experimental observations. Different vortical modes in the skewed jet shear layer close to the jet nozzle were identified depending upon the velocity ratio between jet and crossflow, namely changing from an approximately axisymmetric mode to a helical one with the velocity ratios varying from 20 to 8. Moreover, the scarf vortex wrapped around the impinging jet in the near-wall zone showed distinct asymmetry with regard to its bilateral spiral legs within the near region. And the entrainment of the ambient crossflow fluids by the scarf vortex in the near-wall zone was appreciably influenced by its asymmetry and in a large part occurred on the surface of the spiral roller structures in the course of spreading downstream.

关键词： Large-Eddy Simulation （LES） impinging jet crossflow vortical structure entrainment

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Nanotechnologies and nanomaterials for thermal management of microsystems

Nanotechnologies and nanomaterials for thermal management of...

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International Symposium on High Density Packaging and Microsystem Integration 2007, HDP'07

作者： Johan, Liu Key Laboratory of Advanced Display and System Applications Yan Chang Campus Shanghai University No 149 Yan Chang Road 200072 China SMIT Center Department of Microtechnology and Nanoscience Chalmers University of Technology Se 412 96 Gothenburg Sweden

ISBN: (纸本)1424412536

One important function of microsystem packaging is to remove the heat generated by the integrated circuits (ICs). The thermal management of microsystems has now become more crucial as the power density of ICs increases dramatically. To remove the big amount of heat is a big challenge for the packaging technology. An attractive solution is to utilize newdeveloped nanotechnologies and nanomaterials to enhance the heat removal from microsystems. This paper generally reviews the related research work performed at smit center. Three approaches are presented: thermal interface materials (TIMs) made of electrospun nanofibers and nano thermally conductive particles, microchannel coolers based on carbon nanotubes (CNTs), and CNT-based high thermally conductive interconnects. These three techniques provide a systematic solution to the efficient thermal management of microsystems. © 2007 IEEE.

关键词： Nanostructured materials

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Experimental and Numerical Investigations on the Performance and Reliability of CNT Fins for Micro-Cooler

Experimental and Numerical Investigations on the Performance...

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2012 International Conference on Electronic Packaging Technology & Hiigh Pachaging(2012电子封装和高密度封装国际会议(ICEPT-HDP2012))

作者： Hui-feng Lv Yan Zhang Jing-yu Fan Di Jiang Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education & SMIT CenterSchoo Shanghai Institute of Applied Mathematics and Mechanics Shanghai UniversityShanghai 200072China SMIT Center & Bionano Systems Laboratory Department of Microtechnology and NanoscienceChalmers Univ Key Laboratory of Advanced Display and System Applications Ministry of Education & SMIT CenterSchoo

ISBN: (纸本)9781467316828

The current development of electronic products towards miniaturization and multifunction is leading to an increase in the power density of chip and *** high power consumption and corresponding heat dissipation are two of the most serious limitations for high performance *** combination of the carbon nanotube (CNT) with outstanding thermal properties with an air jet cooling provides a promising option for the heat dissipation of high-powered components and *** the present paper,the CNTs are utilized to manufacture the pin-fins for the micro-cooler,and the performance and evaluation of this CNT-based micro-pin-fin cooler are investigated both experimentally and *** effects of various parameters,such as the jet velocity and height,the fin size and shape,and so on,on the flow field and temperature distribution characteristics are comprehensively considered and *** obtained results indicate that the CNT-fins are of quite good strength and thermal performance in the jet impingement cooling environment.

关键词： HEAT DISSIPATION POWER DENSITY jet cooling spouting velocity Fins electronic products jet impingement flow field fins miniaturization heat transfer property Temperature distribution Andromeda Power consumption HIGH-PERFORMANCE

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High-quality OLED Micro-display aided by PGL-SCS operator

High-quality OLED Micro-display aided by PGL-SCS operator

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International Conference on display Technology, ICDT 2018

作者： Guo, Aiying Ran, Feng Zhang, Jianhua Xu, Meihua Shen, Huaming Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai China Microelectronic Research and Development Center Shanghai China School of Mechatronics Engineering and Automation Shanghai China

ISBN: (纸本)9781510867659

In the high-quality OLED micro-display, it is difficult to balance the faster frame refresh rate and higher resolution frame. In order to solve this problem, this paper propose a high-efficient PGL-SCS (Particle Gray Level-Scan Control Strategy) operator as the new scan strategy, which is based on the digital fractal scan strategy. This paper firstly introduces the theory model of PGL-SCS operator, which based on the relationship between sub-space code sequences and bit code sequences for different gray levels. Second, the theory performance of PGL-SCS is analysed. At last, the PGL-SCS operator is tested using the IP core and self-build HD OLED micro-display system. The experiments shows that the PGL-SCS operator can obtain 100% scan utilization and a significant decrease in the system clock frequency, compared with the traditional scan methods. With the proposed PGL-SCS there is no need of using high-speed IC circuits to realize the high-resolution and high-quality OLED micro-display system. © 2018 SID.

关键词： display devices

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Study into High Temperature Reliability of Isotropic Conductive Adhesive

Study into High Temperature Reliability of Isotropic Conduct...

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2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Wenhui Du Huiwang Cui Si Chen Zhichao Yuan Lilei Ye Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S Shangda Rui Hu Microsystem Integration Technology Co.Ltd Room 101 Science &Technology Building Sh Smart High Tech AB Fysikgrand 3 41296 Gothenburg SWEDEN Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S

With the rapid development of technologies for high density assembly and packaging in electronic industry, isotropic conductive adhesive (ICA) has been paid more and more attention as a potential substitute for solder, due to its advantages of low processing temperature, simple processing conditions and good manufacturability. However, studies into the reliability of ICA are not as abundant as those of solder. As a composite material, the failure feasibility of ICA not only depends not only on the variation in performance of different constituent parts, such as high temperature aging of the polymer, aging due to moisture absorption and oxidization of filler particles, but also on interface changes. Thus, the failure mechanism of ICA seems to be complicated and studies into the reliability of ICA are also necessary. Reliability in humidity and heat has been investigated in previous works, and in this paper high temperature reliability will be studied as a comparison. Some reliability tests and results will be given and some failure mechanisms discussed. Finally, we present some discussion about the further optimization of reliability for follow-up studies.

关键词： Aging Reliability Conductivity Conductive adhesives Materials Packaging Temperature

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Characterization of Electrospun Zinc Oxide Nanofibers

Characterization of Electrospun Zinc Oxide Nanofibers

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2013 International Conference on Materials for Renewable Energy and Environment

作者： Yanyan Chang Nanhong Zhang Mengke Zhuang Xiuzhen Lu Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT CenterSchool of Mechatronics Engineering and AutomationShanghai University

ISBN: (纸本)9781479933372

ZnO nanofibers were prepared by sol-gel processing and electrospinning ***(vinyl acetate)(PVA) and zinc acetate were used as precursors of PVA/zinc acetate composite *** composite and calcined nanofibers were characterized by Thermo gravimetric analysis(TGA),energy disperse spectroscopy(EDS),X-ray diractometer(XRD) and scanning electron microscopy(SEM),*** calcination of PVA/zinc acetate composite nanofibers at 400,600,and 800°C in air for 2 hours with heating rate of ～4°C/min,ZnO nanofibers were obtained *** ZnO nanofiber diameters were 207,135,158,and 200nm before and after calcination at 400,600,800°C,*** diameter of fibers reduced firstly and then increased with the rising calcination *** possible mechanism of it is also discussed.

关键词： ZnOnanofibers electrospinning Morphologies calcination

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