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SSRN 2022年

作者： Dong, Qingchen Cheng, Xiaozhe Lian, Hong Yao, Lingling Xia, Weizhen Han, Jinba Wong, Wai-Yeung MOE Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of Technology 79 Yingze West Street Taiyuan030024 China MOE Key Laboratory of Advanced Display and System Applications Shanghai University 149 Yanchang Road Jingan District Shanghai200072 China School of Mechanical & Electronic Engineering and Automation Shanghai University 99 Shangda Road Baoshan District Shanghai200444 China Hung Hom Hong Kong The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen518057 China

Adjustment of molecular structure can effectively improve the organic memory device behaviors due to the optimization of intra/intermolecular interaction and molecular packing motif. However, the intrinsic mechanism of how intermolecular interaction and molecular packing motif affect the device performance needs to be further explored. Herein, we synthesized four new small molecules (X-TEBT) by introducing the alkynyl π bridges and different substituents (X = H, CN, tBu, OMe) into the backbone of conjugated donor–acceptor molecules, namely, TEBT , CN-TEBT, tBu-TEBT and OMe-TEBT, for solution-processed organic resistive memory. All memory devices displayed nonvolatile write-once-read-many-times (WORM) behaviors with low threshold voltage ( V th ), high production yield, and good thermal stability. The champion device ( tBu-TEBT ) exhibits ternary WORM property with the highest ON2/ON1/OFF ratio and the lowest V th1 (1.6 V) and V th2 (2.4 V). More importantly, the single crystal structure of t Bu-TEBT was successfully obtained which helps us analyze the origin of the physical mechanism of resistive switching behavior and establish a common structure-property relationship for high performance organic memory. Its excellent properties enable us to perform logic gates and information display functions which offer possibilities as smart sensor in Internet of Things (IoT) application. © 2022, The Authors. All rights reserved.

关键词： Logic gates

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Recent Progress in The Studies of Low Melting Sn-Based Pb-Free Solders

Recent Progress in The Studies of Low Melting Sn-Based Pb-Fr...

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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： Yang Lin Luqiao Yin Xicheng Wei Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Educati School of Mechatronics and Automation Shanghai University P.O.B.143 149 Yanchang Rd. Shanghai 20 School of Mechatronics and Automation Shanghai University P.O.B.143 149 Yanchang Rd. Shanghai 20

Limited by the toxicity of Pb and Pb-containing compounds and the implementation of the mandatory legislations, such as WEEE and RoHS, the Pb-containing solders have been banned and accordingly the Pb-free solders have become popular in electronic industry. However, the novel developed Pb-free solders could cause a series of packaging defects such as delamination, cracking, and charring etc. due to the relatively high melting temperatures of these Pb-free substitutes compared to the former Sn-Pb

关键词： Nanoparticles Compounds Lead Packaging Gallium

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Multi-chip integrated high-power white LED device on the multi-layer ceramic substrate

Multi-chip integrated high-power white LED device on the mul...

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Electronic Components and Technology Conference (ECTC)

作者： Luqiao Yin Weiqiao Yang Yansheng Guo Kejun Ma Shuzhi Li Mingfa Chen Jia Li Jianhua Zhang School of Mechatronics and Automation Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai China Shanghai Research Center of Engineering and Technology for Semiconductor Lighting Shanghai China Rainbow Optoelectronics Material Shanghai Company Limited Shanghai China Microelectronics Technology Institute of East China Shanghai University Shanghai China

In order to solve the thermal issue and improve the thermal resistance of LED, a device with multi-chip packaged on multi-layer composite ceramic substrate is successfully packaged. The top layer of the substrate is low temperature co-fire ceramic (LTCC), while the base layer is aluminum nitride (AINx) ceramic. 18 chips(one watt) are used in the device, and all of them are simultaneously packaged on a composite ceramic substrate which is 55 mm in length and 20 mm in width. The 18 chips are designed into two rows, and three chips in series for six parallels. At the same time the same chips are packaged on aluminum (Al) substrate and alumina (AlOx) substrate. After wire bonding photoelectric parameters of the three package modules are tested, the results show that the properties of the AINx-based package has the best performances, the thermal resistance of the device is far smaller than the other devices packed on the Al substrate and the AlOx substrate. After phosphor coatings the AINx-based multi-layer ceramic substrate package has 896.1 lm (43.4 lm/W) loading 350 milliampere (mA) to each chip, and has 1081.3 lm (35.4 lm/W) loading 500 mA. The multi-chip module has little light degradation adding 500 mA to each chip after working in the room temperature for one afternoon. At last the module is simulated by ANSYS software, the highest junction temperature of the chips in the module is about 70.8degC when 1.8 watts electric power is loaded to each chip, this temperature is far lower than 125degC which will damage the chip, and he highest simulation temperature of the aluminum heat slug is about 39.3degC. The temperature of the aluminum heat slug is about 41.0degC which is tested by thermocouple in the experiments, and it is closely to the simulation temperature 39.3degC. At last the relationship between pn-junction temperature and thermal conductivity coefficient of the silver (Ag) paste , the relationship between pn-junction temperatures and convection coefficient ha

关键词： Light emitting diodes Ceramics Temperature Packaging Thermal resistance Thermal conductivity Testing Aluminum nitride Wire Bonding

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Corrigendum to "Controlled-temperature photothermal and oxidative bacteria killing and acceleration of wound healing by polydopamine-assisted Au-hydroxyapatite nanorods"[Acta Biomaterialia 77 (2018) 352-364]

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Acta biomaterialia 2023年 168卷 674-675页

作者： Xiaomo Xu Xiangmei Liu Lei Tan Zhenduo Cui Xianjin Yang Shengli Zhu Zhaoyang Li Xubo Yuan Yufeng Zheng Kelvin Wai Kwok Yeung Paul K Chu Shuilin Wu Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science & Engineering Hubei University Wuhan 430062 China. School of Materials Science & Engineering Tianjin University Tianjin 300072 China. State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China. Department of Orthopaedics & Traumatology Li Ka Shing Faculty of Medicine The University of Hong Kong Pokfulam Hong Kong China. Department of Physics & Department of Materials Science and Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong China. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science & Engineering Hubei University Wuhan 430062 China School of Materials Science & Engineering Tianjin University Tianjin 300072 China. Electronic address: shuilin.wu@***.

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13.3: A new pixel structure for OLEDoS micro-display

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SID Symposium Digest of Technical Papers 2019年第S1期50卷

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

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.

关键词： OLEDoS Micro-display Pixel structure SVGA MONSFET

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31.1:Invited Paper:Highly Efficient Light-emitting Devices Based on Quantum dots/Perovskites

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SID Symposium Digest of Technical Papers 2022年第S1期53卷

作者： Lin Wang Lingmei Kong Xuyong Yang Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University 149 Yanchang Road Shanghai 200072 China

Colloidal quantum dots/perovskites based light-emitting diodes (QLEDs/PeLEDs) have attracted extensive attention for lighting and display applications because of their excellent advantages, such as narrow emission bandwidth, color tunability, high brightness and low-cost fabrication techniques. The external quantum efficiencies (EQEs) for QLEDs/PeLEDs are catching up with those for commercial organic light-emitting diodes (OLEDs), thanks to the quantum efficiency improvement, the device configuration optimization as well as the deep understanding of electroluminescence principle. Despite the rapid advance in device performance has been achieved, the operational lifetime of these devices still cannot meet the requirements for practical applications. In this report, we will present our latest advances in improving performance and stability of high color-purity QLEDs/PeLEDs.

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P-13.2: AMOLED Encapsulation Technology and Prospect

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SID Symposium Digest of Technical Papers 2018年第S1期49卷

作者： Wei Ao Chunhong Li Yan Wang Xiangchao Liu Xiaogang Xin Feng Gao Chaochi Peng Jianhua Zhang Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai 200072 China Kunshan Govisionox Optoelectronics Co. LTD (GVO) Kunshan 215300 Jiangsu P.R. China

The flexible organic light emitting diodes (OLEDs) has attracted a lot of attention because of its very wide and promising application prospect. The flexible encapsulation is a most problem for mass production of flexible OLEDs since their sensitivity to water and oxygen. Traditional flexible encapsulation using plasma enhanced chemical vapor deposition (PECVD) film as the inorganic layer. However owing to the complicated pattern of sub-layer and particles, the poor step coverage of PECVD film results in bad encapsulation properties. Therefore the plasma enhanced atomic layer deposition (PEALD) is studied on account of its better step coverage and lower growth temperature. Firstly, the PECVD SiNx process has been researched to achieve the low water vapor transmission rate (WVTR) (WVTR<5*10-4g m-2day-1) and low stress (<-300MPa). Then we design several flexible encapsulation films with multilayer structures. The PEALD SiOx film is critical in the multilayer encapsulation films to obtain flexible OLED devices with the best air-stability . Through evaluation of the pass rate after 60oC 90% RH and 85 oC 85% RH for 240h, best structure of flexible encapsulation films has been selected and used in our product.

关键词： PEALD PECVD Encapsulation Flexible

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Polarization-Induced Proton Adsorption and Charge Separation in Pyrene-Based Conjugated Microporous Polymers Via Substituent Regulation for Efficient Photocatalytic Hydrogen Evolution

SSRN

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SSRN 2023年

作者： Ren, Runtang Jiao, Zhengxu Li, Zhanfeng Tian, Yue Liu, Baoyou Yue, Gang Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan030024 China Institute of Carbon Materials College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China Technology Innovation Center Ningxia Sinostar Display Material Co. Ltd. Yinchuan750003 China

Constructing photocatalysts with efficient light-harvesting abilities and charge separation properties is highly promising but still challenging for boosting photocatalytic hydrogen evolution from water. Herein, we report a simple and general polarization strategy through substituent regulation such as fluorination, chlorination and cyanation, to promote the photon capture and charge separation and unveil the latent structure–property–activity relationship in pyrene-based conjugated microporous polymers (CMPs). Notably, the introduction of fluorine, chlorine and cyano substituents onto the well-known full donor pyrene-benzene-based CMP network (Py-B) could induce a strong dipole along C–F/–Cl/–CN bonds and the backbone local polarization enhancement due to their strong electron-withdrawing ability, which afforded CMPs have a variety of superior effects such as narrowing band gaps, expanding optical absorption, improving interfacial wettability and solid-state morphology, and promoting charge separation inside organic photocatalysts. As a result, 1.73/2.50/4.69-fold increases of the hydrogen evolution rates of the –F/–Cl/–CN modified CMPs under visible light (λ > 420 nm) irradiation without Pt co-catalysts can be obtained in comparison with the counterpart Py-B (28.5/41.3/77.4 mmol g−1 h−1 vs 16.5 mmol g−1 h−1). Impressively, we find that the photocatalytic performance of this series of photocatalysts is linearly related to the dipole moment of polymers. Our studies reveal that the backbone local polarization enhancement induced by the substituent regulation could achieve high-performance organic photocatalysts toward solar-to-chemical energy conversion. © 2023, The Authors. All rights reserved.

关键词： Polarization

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P-13.4: Dual-Molecule Hosts for Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes with Low Efficiency Roll-Off

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SID Symposium Digest of Technical Papers 2022年第S1期53卷

作者： Rongrong Xia Ke Wang Jianfeng Guo Hengdan Wang Zhen Zhang Zixing Wang Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University 149 Yanchang Rd. Shanghai 200072 China

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Design of a Capsule Robot system for Gastric Hemorrhage Detection using Luminol

Design of a Capsule Robot System for Gastric Hemorrhage Dete...

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IEEE International Conference on Mechatronics and Automation

作者： Yuchen Mao Jian Guo Shuxiang Guo Qiang Fu Tianjin Key Laboratory for Control Theory & Application Complicated Systems and Intelligent Robot Laboratory School of Electrical Engineering and Automation Tianjin University of Technology Binshui Xidao Extension 391 Tianjin China Shenzhen Institute of Advanced Biomedical Robot Co. Ltd No.12 Ganli Sixth Road Jihua Street Longgang District Shenzhen China Key Laboratory of Convergence Medical Engineering System and Healthcare Technology The Ministry of Industry and Information Technology School of Life Science Beijing Institute of Technology No.5 Zhongguancun South Street Beijing China

Gastric hemorrhage in upper gastrointestinal bleeding is an obvious indicator of deteriorating gastric disease. This paper proposes a capsule robot system for detecting bleeding in the stomach. The patient ingests a capsule robot containing luminol reagent, which detects bleeding in the stomach via chemiluminescence. The MCU receives the optical sensor signal, and the data is transmitted via radio frequency. The external lower computer receives and forwards the data to the upper computer for processing and display. The data is used to determine the presence and amount of stomach bleeding. Chemiluminescence is an excellent sensor, requiring no external energy supply, and demonstrating excellent sensitivity and selectivity. Combining chemical and electronic sensors presents opportunities for further development. Capsule robot detection reduces the discomfort and risk of secondary injury associated with traditional endoscopy. This paper establishes an experimental platform using porcine blood to simulate human blood, demonstrating the feasibility of the system.

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