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Sputtered Sn-doped Ga2O3 films under balance controlled of energy supply and ion bombardment for solar-blind detection application

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Vacuum 2024年 225卷

作者： Wang, Chen Fan, Wei-Hang Cao, Rong-Jun Fan, Hui-Chen Xu, Yi-Hong Kang, Pin-Chun Wu, Ting-Zhu Kuo, Hao-Chung Lien, Shui-Yang Zhu, Wen-Zhang Xiamen Key Laboratory of Development and Application for Advanced Semiconductor Coating Technology School of Opto-electronic and Communication Engineering Xiamen University of Technology Xiamen361024 China National Measurement and Testing Center for Flat Panel Display Industry Xiamen Institute of Measurement and Testing Xiamen361004 China National Integrated Circuit Industry and Education Integration Innovation Platform Department of Electronic Science Xiamen University Xiamen361005 China Department of Photonics & Graduate Institute of Electro-Optical Engineering College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Department of Biomedical Engineering Da-Yeh University Changhua51591 Taiwan

The characteristics of amorphous Sn-doped Ga2O3 films deposited using radio frequency magnetron sputtering at room temperature under different sputter powers have been demonstrated. A balance mechanism of energy supply and ion bombardment controlled by sputter power has been found during the deposition. The increasing growth rate as power can be due to the increased yield sputtering species indicated by an in situ optical emission spectroscopy. As the power increases to 700 W, an obvious change from discrete nanoparticles to flat-continuous film can be observed because of sufficient energy supply for oxidation reaction, which leads to the maximum ratio of lattice oxygen and Sn4+ indicating the optimal film quality and conductive property. However, a non-negligible high energy ion bombardment presented at 900 W leads to the degraded film quality. The influence of sputtering power on Sn-doped Ga2O3 solar-blind photodetectors is demonstrated. It can obtain a good performance with an ultra-low dark current density of 2.2 × 10−11 A/cm2, a substantial light-dark current ratio of 1.08 × 103 and fast rise/decay time of 1.59 s/0.54 s at 700 W. The revelation of the role of sputtering power on the properties of Sn-doped Ga2O3 films may offer an interesting direction for low-cost and high-performance solar-blind photodetectors. © 2024 Elsevier Ltd

关键词： Gallium compounds

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LEDs: High‐Efficiency and Stable Quantum Dot Light‐Emitting Diodes Enabled by a Solution‐Processed Metal‐Doped Nickel Oxide Hole Injection Interfacial Layer (Adv. Funct. Mater. 42/2017)

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advanced Functional Materials 2017年第42期27卷

作者： Fan Cao Haoran Wang Piaoyang Shen Xiaomin Li Yanqiong Zheng Yuequn Shang Jianhua Zhang Zhijun Ning Xuyong Yang Key Laboratory of Advanced Display and System Applications Education of Ministry Shanghai University 149 Yanchang Road 200072 China School of Physical Science and Technology ShanghaiTech University 393 Middle Huaxia Road Pudong Shanghai 201210 China

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The Effect of Functionalized Silver on Rheological and Electrical Properties of Conductive Adhesives

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ECS Transactions 2011年第1期34卷

作者： Qiong Fan Huiwang Cui Chune Fu Dongsheng Li Xin Tang Zhichao Yuan Lilei Ye Johan Liu Ministry of Education and SMIT Center Shanghai University Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center Shanghai University Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center Shanghai University No.149 Yanchang Road Shanghai Shanghai 200072 China Shang Da Rui Hu Microsystem Integration Technology Co.Ltd Shanghai University SHT Smart High Tech AB Shanghai University SE-412 96 Gothenburg Gothenburg 41296 Sweden

This research used low molecular surface modifiers, and observed that chemisorptions took place through the formation of a bond between silver surface and an adsorbed molecule, which improved the dispersion of silver flakes in the organic resin. Several different functionalizers, such as thioglycolic acid, silane and di-acid, were used to functionalize the silver surface. Results of shear viscosity, bulk resistivity etc. showed that by using these low molecular organic functionalizers, isotropic conductive adhesives (ICAs) with lower shear viscosity and better electrical conductivity at high silver fillers content were obtained. The adipic acid had the greatest effect on the rheological and electrical property of ICAs, so its weight percentage in silver flakes was also optimized; ICAs displayed the maximum electrical conductivity when there was 0.5 wt% of silver flakes.

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The design of AGV's dynamic wireless power transmission power supply based on Adaptive Weight Value Multi-objective Genetic Algorithm

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IOP Conference Series: Materials Science and Engineering 2019年第3期688卷

作者： Pingfan Ning Tiantong Li Pingjuan Niu Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology School of Electrical Engineering and Automation Tianjin Polytechnic University Tianjin 300387 China Engineering Research Center of High Power Solid State Lighting Application System Ministry of Education Tianjin 300387 China

AGV is the application of modern factory intelligence and automation. With the development of wireless power transmission (WPT), its transmission efficiency and stability are getting higher and higher. However, from static charging to dynamic power supply, the cost of technology implementation has increased significantly. This paper proposed a method to supply power to logistics AGV by intermittent segment, established the binary coverage model according to the power coverage distance, and designed an Adaptive Weight Value Multi-objective Genetic Algorithm (AWVMOGA) for this model to Optimizing the path design of sectional power supply. The influence of three weight value adaptive methods on the optimization results is analyzed, the effectiveness of the proposed method is analyzed and verified through case simulation.

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Bias-Switchable Dual-Mode Organic Photodetector with High Operational Stability Using Self-Trapped Cs3Cu2I5Interfacial Layer

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Angewandte Chemie 2024年第30期136卷

作者： Zitong Zhang Junchuan Liu Lin Wang Qi Wei Mingjie Li Chunxiong Bao Qingzhen Bian Laboratory of Advanced Quantum Bio-optoelectronics (LAQB) State Key Laboratory of Fluorine & Nitrogen Chemicals Xi'an Modern Chemistry Research Institute Xi'an 710065 China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai 200072 China Department of Applied Physics The Hong Kong Polytechnic University Hong Kong 999077 China National Laboratory of Solid State Microstructures School of Physics Nanjing University Nanjing 210093 China

Conventional photovoltaic (PV)-photodetectors are hard to detect fainted signals, while photomultiplication (PM)-capable devices indispensable for detecting weak light and are prone to degrade under strong light illumination and large bias, and it is urgent to realize highly efficient integrated detecting system with both PM and PV operation modes. In this work, one lead-free Cs 3 Cu 2 I 5 nanocrystals with self-trapping exciton nature was introduced as interfacial layer adjacent to bulk and layer-by-layer heterojunction structure, and corresponding organic photodetectors with bias-switchable dual modes are demonstrated. The fabricated device exhibits low operating bias (0 V for PV mode and 0.8 V for PM mode), high specific detectivity (~10 13 Jones), fast response speed as low as 1.59 μs, large bandwidth over 0.2 MHz and long-term operational stability last for 4 months in ambient condition. This synergy strategy also validated in different materials and device architectures, providing a convenient and scalable production process to develop highly efficient bias-switchable multi-functional organic optoelectrical applications.

关键词： organic photodetectors photomultiplication and photovoltaic modes operational stability self-trapped lead-free perovskite nanocrystal interfacial charge transfer

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Lead-Free Nanocrystals: Bright Blue Light-Emitting Doped Cesium Bromide Nanocrystals: Alternatives of Lead-Free Perovskite Nanocrystals for White LEDs (advanced Optical Materials 10/2019)

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advanced Optical Materials 2019年第10期7卷

作者： Zhiwen Yang Zhao Jiang Xinyi Liu Xiaochuan Zhou Jianhua Zhang Wanwan Li State Key Lab of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai 200072 China

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Design of PID temperature control system based on STM32

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IOP Conference Series: Materials Science and Engineering 2018年第7期322卷

作者： Jianxin Zhang Hailin Li Kai Ma Liang Xue Bianhua Han Yuemeng Dong Yue Tan Chengru Gu Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems Tianjin Polytechnic University Tianjin China Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology Tianjin Polytechnic University Tianjin China Engineering Research Center of High Power Semiconductor Lighting Application System Education Department Tianjin Polytechnic University Tianjin China State Key Laboratory of Hollow Fiber Membrane Materials and Processes Tianjin Polytechnic University Tianjin China

A rapid and high-accuracy temperature control system was designed using proportional-integral-derivative (PID) control algorithm with STM32 as micro-controller unit (MCU). The temperature control system can be applied in the fields which have high requirements on the response speed and accuracy of temperature control. The temperature acquisition circuit in system adopted Pt1000 resistance thermometer as temperature sensor. Through this acquisition circuit, the monitoring actual temperature signal could be converted into voltage signal and transmitted into MCU. A TLP521-1 photoelectric coupler was matched with BD237 power transistor to drive the thermoelectric cooler (TEC) in FTA951 module. The effective electric power of TEC was controlled by the pulse width modulation (PWM) signals which generated by MCU. The PWM signal parameters could be adjusted timely by PID algorithm according to the difference between monitoring actual temperature and set temperature. The upper computer was used to input the set temperature and monitor the system running state via serial port. The application experiment results show that the temperature control system is featured by simple structure, rapid response speed, good stability and high temperature control accuracy with the error less than ±0.5°C.

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White Light Phosphors: A Nonrare‐Earth Ions Self‐Activated White Emitting Phosphor under Single Excitation (Adv. Funct. Mater. 44/2015)

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advanced Functional Materials 2015年第44期25卷

作者： Hongyu Guo Junying Zhang Lun Ma Jose L. Chavez Luqiao Yin Hong Gao Zilong Tang Wei Chen Department of Physics Beihang University Beijing 100191 China Department of Physics University of Texas at Arlington Arlington TX 76019 USA Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Education Shanghai 200072 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China

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Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial applications

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ACS Nano 2023年第12期17卷 11087-11219页

作者： Choi, Dongwhi Lee, Younghoon Lin, Zong-Hong Cho, Sumin Kim, Miso Ao, Chi Kit Soh, Siowling Sohn, Changwan Jeong, Chang Kyu Lee, Jeongwan Lee, Minbaek Lee, Seungah Ryu, Jungho Parashar, Parag Cho, Yujang Ahn, Jaewan Kim, Il-Doo Jiang, Feng Lee, Pooi See Khandelwal, Gaurav Kim, Sang-Jae Kim, Hyun Soo Song, Hyun-Cheol Kim, Minje Nah, Junghyo Kim, Wook Menge, Habtamu Gebeyehu Park, Yong Tae Xu, Wei Hao, Jianhua Park, Hyosik Lee, Ju-Hyuck Lee, Dong-Min Kim, Sang-Woo Park, Ji Young Zhang, Haixia Zi, Yunlong Guo, Ru Cheng, Jia Yang, Ze Xie, Yannan Lee, Sangmin Chung, Jihoon Oh, Il-Kwon Kim, Ji-Seok Cheng, Tinghai Gao, Qi Cheng, Gang Gu, Guangqin Shim, Minseob Jung, Jeehoon Yun, Changwoo Zhang, Chi Liu, Guoxu Chen, Yufeng Kim, Suhan Chen, Xiangyu Hu, Jun Pu, Xiong Guo, Zi Hao Wang, Xudong Chen, Jun Xiao, Xiao Xie, Xing Jarin, Mourin Zhang, Hulin Lai, Ying-Chih He, Tianyiyi Kim, Hakjeong Park, Inkyu Ahn, Junseong Huynh, Nghia Dinh Yang, Ya Wang, Zhong Lin Baik, Jeong Min Choi, Dukhyun Kyung Hee University Gyeonggi Yongin17104 Korea Republic of Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States Department of Mechanical Engineering Soft Robotics Research Center Seoul National University Seoul08826 Korea Republic of Department of Mechanical Engineering Gachon University Seongnam13120 Korea Republic of Department of Biomedical Engineering National Taiwan University Taipei10617 Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan School of Advanced Materials Science & Engineering Sungkyunkwan University Suwon16419 Korea Republic of Sungkyunkwan University 2066 Seobu-ro Gyeonggi Suwon16419 Korea Republic of Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 117585 Singapore Division of Advanced Materials Engineering Jeonbuk National University 567 Baekje-daero Jeonbuk Jeonju54896 Korea Republic of Jeonbuk National University 567 Baekje-daero Jeonbuk Jeonju54896 Korea Republic of Department of Physics Inha University 100 Inha-ro Incheon22212 Korea Republic of School of Materials Science & Engineering Yeungnam University Gyeongbuk Gyeongsan38541 Korea Republic of 291 Daehak-ro Daejeon34141 Korea Republic of School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore Institute of Flexible Electronics Technology of Tsinghua Zhejiang Jiaxing314000 China Nanomaterials and System Lab Major of Mechatronics Engineering Faculty of Applied Energy System Jeju National University Jeju632-43 Korea Republic of School of Engineering University of Glasgow GlasgowG128QQ United Kingdom Seoul02792 Korea Republic of Department of Physics Inha University Incheon22212 Korea Republic of Suwon16419 Korea Republic of Department of

Serious climate changes and energy-related environmental problems are currently critical issues in the world. In order to reduce carbon emissions and save our environment, renewable energy harvesting technologies will serve as a key solution in the near future. Among them, triboelectric nanogenerators (TENGs), which is one of the most promising mechanical energy harvesters by means of contact electrification phenomenon, are explosively developing due to abundant wasting mechanical energy sources and a number of superior advantages in a wide availability and selection of materials, relatively simple device configurations, and low-cost processing. Significant experimental and theoretical efforts have been achieved toward understanding fundamental behaviors and a wide range of demonstrations since its report in 2012. As a result, considerable technological advancement has been exhibited and it advances the timeline of achievement in the proposed roadmap. Now, the technology has reached the stage of prototype development with verification of performance beyond the lab scale environment toward its commercialization. In this review, distinguished authors in the world worked together to summarize the state of the art in theory, materials, devices, systems, circuits, and applications in TENG fields. The great research achievements of researchers in this field around the world over the past decade are expected to play a major role in coming to fruition of unexpectedly accelerated technological advances over the next decade. © 2023 The Authors. Published by American Chemical Society

关键词： Nanogenerators

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Compressed sensing based channel estimation for fast fading OFDM systems

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Chinese Journal of systems Engineering and Electronics 2010年第4期000卷

作者： Xiaoping Zhou Yong Fang Min Wang Key Laboratory of Specialty Fiber Optics and Optical Access Networks School of Communication and Information EngineeringShanghai University Shanghai 200072 P. R. China Key Laboratory of Specialty Fiber Optics and Optical Access Networks School of Communication and Information EngineeringShanghai University Shanghai 200072 P. R. China Key Laboratory of Advanced Display and System Applications Shanghai 200072 P. R. China

A compressed sensing (CS) based channel estima-tion algorithm is proposed by using the delay-Doppler sparsity of the fast fading channel. A compressive basis expansion chan-nel model with sparsity in both time and frequency domains is given. The pilots in accordance with a novel random pilot ma-trix in both time and frequency domains are sent to measure the delay-Doppler sparsity channel. The relatively nonzero channel coefficients are tracked by random pilots at a sampling rate signifi-cantly below the Nyquist rate. The sparsity channels are estimated from a very limited number of channel measurements by the basis pursuit algorithm. The proposed algorithm can effectively improve the channel estimation performance when the number of pilot sym-bols is reduced with improvement of throughput efficiency.

关键词： compressed sensing sparse channel channel esti-mation fast fading

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