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Highly sensitive and stable β-Ga_(2)O_(3) DUV phototransistor with local back-gate structure and its neuromorphic application

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Nano Research 2022年第10期15卷 9359-9367页

作者： Xiao-Xi Li Guang Zeng Yu-Chun Li Qiu-Jun Yu Meng-Yang Liu Li-Yuan Zhu Wenjun Liu Ying-Guo Yang David Wei Zhang Hong-Liang Lu State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics&SystemsSchool of MicroelectronicsFudan UniversityShanghai 200433China Shanghai Synchrotron Radiation Facility(SSRF) Zhangjiang LabShanghai Advanced Research Institute&Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China

Deep ultraviolet(DUV)phototransistors are key integral of optoelectronics bearing a wide spectrum of applications in flame sensor,military detector,oil spill detection,biological sensor,and artificial intelligence *** order to further improve the responsivity of UV photodetectors based onβ-Ga_(2)O_(3),in present work,high-performanceβ-Ga_(2)O_(3) phototransistors with local back-gate structure were experimentally *** phototransistor shows excellent DUV photoelectrical performance with a high responsivity of 1.01×107 A/W,a high external quantum efficiency of 5.02×109%,a sensitive detectivity of 2.98×1015 Jones,and a fast rise time of 0.2 s under 250 nm ***,first-principles calculations reveal the decent stability ofβGa_(2)O_(3) nanosheet against oxidation and humidity without significant performance ***,the hexagonal boron nitride(h-BN)/β-Ga_(2)O_(3) phototransistor can behave as a photonic synapse with ultralow power consumption of~9.6 fJ per spike,which shows its potential for neuromorphic computing tasks such as facial ***β-Ga_(2)O_(3) phototransistor will provide a perspective for the next generation optoelectrical systems.

关键词： β-Ga_(2)O_(3)phototransistors local back-gate responsivity stability photonic synapse

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HierSyn: Fast Synthesis for Large Hierarchical Designs 15

HierSyn: Fast Synthesis for Large Hierarchical Designs

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15th IEEE International Conference on asic, asicON 2023

作者： Zhang, Yishan Zhang, Zhiyong Wu, Chang Fudan University State-Key Lab of ASIC and System School of Microelectronics Shanghai200433 China Shanghai Fudan Microelectronics Group Co. Ltd Shanghai200433 China

ISBN: (纸本)9798350312980

As design goes into multi-billion transistors, the synthesis runtime becomes an important issue, particularly for design verification and prototyping, as one may run the synthesis many times with design change. Module-by-module synthesis with multi-threading is a natural solution for fast synthesis, however, at the cost of quality of results (QoR) degradation. Besides, multi-thread speedup may not be so good due to very uneven sizes of the modules. In this paper, we propose a design hierarchy restructuring based multi-thread synthesis algorithm for large-scale designs. Small module flattening and large module partitioning are used to create moderate size design modules. Our experimental results show that our algorithm can produce results within 3% area increase and 21.3x speedup over the flat synthesis flow. © 2023 IEEE.

关键词： Logic Optimization Logic Synthesis Multi-thread

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A 9.8 Gbps, 6.5 mW forwarded-clock receiver with phase interpolator and equalized current sampler in 65 nm CMOS

A 9.8 Gbps, 6.5 mW forwarded-clock receiver with phase inter...

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IEEE MTT-S International Microwave Symposium, IMS 2015

作者： Ma, Shunli Manoj, Sai Yu, Hao Ren, Junyan Weerasekera, Roshan State Key Lab of ASIC and System Fudan University Shanghai200433 China School of EEE Nanyang Technological University Singapore639798 Singapore Institue of Microelectronics ASTAR Singapore

ISBN: (纸本)9781479982752

A full-rate energy-efficient forwarded-clock (FC) receiver is demonstrated in this paper. A current sampler with continuous-time equalization is realized with 20 GHz bandwidth in sampling for data recovery. Moreover, a phase interpolator is introduced to generate sampling clock with deskew for data recovery. The testing chip was fabricated in 65 nm CMOS process in area of 0.16 mm2. Measurement shows that the FC receiver can achieve a data-rate up to 9.8 Gbps and power consumption is 6.5 mW. © 2015 IEEE.

关键词： Clocks

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A Blockchain-Based Certificate system with Credit Self-Adjustment

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Wuhan University Journal of Natural Sciences 2023年第2期28卷 163-168页

作者： ZHOU Wang TAO Jun LI Xin School of Electronic Information Wuhan UniversityWuhan 430072HubeiChina State Key Lab of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China Data Science Research Center Duke Kunshan UniversityKunshan 215316JiangsuChina

Currently,digital certificate systems based on blockchain have been extensively developed and ***,most of them do not take into account the certificate *** evaluate the credibility of certificates issued by educational institutions,we propose a novel blockchain-based system with credit self-adjustment(BC-CS).In BC-CS,employers can provide feedback according to the performances of their employees(i.e.,students)holding different *** on the feedback,BC-CS automatically adjusts the certificate credits by using our proposed credit self-adjustment *** verify the feasibility of our proposed system,a decentralized application prototype has been developed on an Ethereum *** results demonstrate that the proposed system can fully support multistep accreditation and automatic adjustment for certificate credit.

关键词： blockchain certificate credit self-adjustment

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Mining Lithography Hotspots from Massive SEM Images Using Machine Learning Model

Mining Lithography Hotspots from Massive SEM Images Using Ma...

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2021 China Semiconductor Technology International Conference, CSTIC 2021

作者： Zhou, Tao Xu, Bowen Li, Chen Diao, Xuling Yan, Yan Chen, Shoumian Zhao, Yuhan Zhou, Kan Zhou, Wenzhan Zeng, Xuan Shi, Xuelong Shanghai Integrated Circuits Rd Center Co. Ltd. Shanghai China State Key Lab of Asic System School of Microelectronics Fudan University Shanghai China

ISBN: (纸本)9781665449458

An effect method based on machine learning is developed for hotspots mining in lithography. A series of models are trained independently and combined to achieve high accuracy. Innovatively, contour information is firstly adopted to assist the hotspot detection, which eases the very challenging task of detection for topology aberration caused by complicated process effects. More importantly, the proposed method based on new methodology provides high efficiency which is competent for high volume manufacturing. © 2021 IEEE.

关键词： Machine learning

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A low power 1.0 GHz VCO in 65nm-CMOS LP-process

A low power 1.0 GHz VCO in 65nm-CMOS LP-process

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2011 IEEE 9th International Conference on asic, asicON 2011

作者： Zhang, Zhang Yu, Zhiyi Cheng, Xu Zeng, Xiaoyang Electronics and Apply Physical School Hefei University of Technology Hefei 230009 Anhui China State Key Lab. of ASIC and System Fudan University Shanghai 201203 China

ISBN: (纸本)9781612841908

A 1.0GHz, Voltage Controlled Oscillator (VCO) fabricated in TSMC 1.2V 1P9M 65nm CMOS LP-Process is presented in the paper. The output frequency is proportional to the control voltage (Vctrl). The advantage of the architecture is very simple and easy to be realized and it aims at low power, low area and low cost. Measured results show that the VCO operates at 400 MHz to 1.6 GHz while Vctl ranges from 0.8V to 1.4V and the tuning range is even larger than 100%. The VCO works well in Register File and consumes 0.5 mA from a 1.2-V power supply, and occupies an area of 400 μm2. © 2011 IEEE.

关键词： Variable frequency oscillators

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An Ultra-Low Quiescent Current CMOS Low-Dropout Regulator with Small Output Voltage Variations

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Journal of Power and Energy Engineering 2014年第4期2卷 477-482页

作者： Xin Cheng Yizhong Yang Longjie Du Yang Chen Guangjun Xie School of Electronic Science and Applied Physics Hefei University of Technology Hefei China State Key Lab of ASIC and System Fudan University Shanghai China State Key Lab of ASIC and System Fudan University Shanghai China

An ultra-low quiescent current low-dropout regulator with small output voltage variations and improved load regulation is presented in this paper. It makes use of dynamically-biased shunt feedback as the buffer stage and the LDO regulator can be stable for all load conditions. The proposed structure also employs a momentarily current-boosting circuit to reduce the output voltage to the normal value when output is switched from full load to no load. The whole circuit is designed in a 0.18 μm CMOS technology with a quiescent current of 550 nA. The maximum output voltage variation is less than 20 mV when used with 1 μF external capacitor.

关键词： Ultra-Low Quiescent Current Low-Dropout Regulator Small Output Variations

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Fabrication and Transmission Characteristic of PDMS Plasma Photonic Crystal

Fabrication and Transmission Characteristic of PDMS Plasma P...

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2008 9th International Conference on Solid-state and Integrated-Circuit Technology

作者： Jinying Zhang Hua Huang Xinming Ji Jia Zhou Yiping Huang ASIC and System State Key Lab School of MicroelectronicsFudan University

＜正＞Two-dimensional（2-D） polydimethylsiloxane （PDMS） plasma photonic crystal with square lattice structure was fabricated by hydro-casting method using Si-based *** transmission characteristic of PDMS plasma photonic crystal was studied by UV-visible *** results show that the plasma photonic crystal can improve the transmitted rate in visible light range.

关键词： PDMS hydro-casting plasma photonic crystal enhanced transmission

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Effect of K2CO3 on the CMP of Ru in Alkaline H2O2 Based Slurry

Effect of K2CO3 on the CMP of Ru in Alkaline H2O2 Based Slur...

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2016 International Conference on Planarization/CMP Technology（ICPT 2016）

作者： Guang Yang Peng He Jingbo Xu Xin-Ping Qu State key lab of ASIC and system School of MicroelectronicsFudan University

The effect of potassium carbonate（KCO） on the CMP of Ru in alkaline HO based slurry was *** was found that KCO can promote the polishing rate of Ru, which was also verified by higher open circuit potential（OCP） and greater corrosion current density in potentiodynamic experiments.A saturated trend of ex-situ OCP indicates that KCO may take part in chemical *** addition, KCO could result in higher galvanic current density between Ru and Cu, while glycine or TAZ may be a probable solution to this problem.

关键词： CMP Effect of K2CO3 on the CMP of Ru in Alkaline H2O2 Based Slurry

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Experimental demonstration for 40-km fiber and 2-m wireless transmission of 4-Gb/s OOK signals at 100-GHz carrier

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Chinese Optics Letters 2013年第2期11卷 24-26页

作者：汤禅娟李荣玲邵宇丰迟楠余建军董泽 G. K. Chang State Key Lab of ASIC and System Department of Communication Science and EngineeringFudan University The School of ECE Georgia Insititute of TechnologyAtlantaGA 30332USA

We experimentally demonstrate a 4-Gb/s radio-over-fiber （RoF） system with 40-kin fiber and 2-m wireless distance downstream at 100-GHz carrier. To the best of our knowledge, this is for the first time in China to realize optical wireless link at 100 GHz. In this letter, simple intensity modulator with direct detector （IM-DD） modulation is employed and optical power penalty afZer 40-kin single mode fiber （SMF）-28 and 2-m air link is 3.2 dB with bit-error-rate （BER） at 1 × 10- 9.

关键词： OOK RoF Experimental demonstration for 40-km fiber and 2-m wireless transmission of 4-Gb/s OOK signals at 100-GHz carrier

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