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Nanoscale phase management of the 2D/3D heterostructure toward efficient perovskite solar cells

science Bulletin 2024年第18期69卷 2853-2861页

作者： Hao Gu Annan Zhu Junmin Xia Wang Li Jiahao Zheng Tao Yang Shengwen Li Nan Zhang Shiliang Mei Yongqing Cai Shi Chen Chao Liang Guichuan Xing Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao 999078China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsNational Innovation Platform(Center)for Industry-Education Integration of Energy Storage TechnologyXi’an Jiaotong UniversityXi’an 710049China Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhen 518055China Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China

The stabilization of the formamidinium lead iodide(FAPbI_(3))structure is pivotal for the development of efficient photovoltaic *** two-dimensional(2D)layers to passivate the threedimensional(3D)perovskite is essential for maintaining the a-phase of FAPbI_(3) and enhancing the power conversion efficiency(PCE)of perovskite solar cells(PSCs).However,the role of bulky ligands in the phase management of 2D perovskites,crucial for the stabilization of FAPbI_(3),has not yet been *** this study,we synthesized nanoscale 2D perovskite capping crusts with=1 and 2 Ruddlesden-Popper(RP)perovskite layers,respectively,which form a type-Ⅱ 2D/3D *** heterostructure stabilizes the a-phase of FAPbI_(3),and facilitates ultrafast carrier extraction from the 3D perovskite network to transport contact *** introduced tri-fluorinated ligands to mitigate defects caused by the halide vacancies and uncoordinated Pb^(2+)ions,thereby reducing nonradiative carrier recombination and extending carrier *** films produced were incorporated into PSCs that not only achieved a PCE of 25.39%but also maintained 95%of their initial efficiency after 2000 h of continuous light exposure without *** findings underscore the effectiveness of a phase-pure 2D/3D heterostructure-terminated film in inhibiting phase transitions passivating the iodide anion vacancy defects,facilitating the charge carrier extraction,and boosting the performance of optoelectronic devices.

关键词： Phase-pure 2D perovskite 2D/3D heterostructure Type-II energy alignment Carrier dynamic FAPbI_(3)

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technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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二维/三维异质结构的纳米级相管理以实现高效的钙钛矿太阳能电池（英文）

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science Bulletin 2024年第18期 2853-2861页

作者：顾浩朱桉楠夏俊民李旺郑嘉豪杨涛李胜文张楠梅时良蔡永青陈石梁超邢贵川 Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing University of Posts & Telecommunications (NUPT) MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology Xi'an Jiaotong University Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Harbin Institute of Technology Institute for Electric Light Sources School of Information Science and Technology Fudan University

The stabilization of the formamidinium lead iodide （FAPbⅠ3） structure is pivotal for the development of efficient photovoltaic *** two-dimensional （2D） layers to passivate the threedimensional （3D） perovskite is essential for maintaining the a-phase of FAPb Ⅰ3and enhancing the power conversion efficiency （PCE） of perovskite solar cells （PSCs）.However,the role of bulky ligands in the phase management of 2D perovskites,crucial for the stabilization of FAPbⅠ3,has not yet been *** this study,we synthesized nanoscale 2D perovskite capping crusts with

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A monolithic RF transceiver for DC-OFDM UWB

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Journal of Semiconductors 2012年第2期33卷 87-95页

作者： Chen Yunfeng Li Wei Fu Haipeng Gap Ting Chen Danfeng Zhou Feng Cai Deyun Li Dan Niu Yangyang Zhou Hanchao Zhu Ning Li Ning Ren Junyan State Key Laboratory of ASIC&System Fudan UniversityShanghai 201203China Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan UniversityShanghai 201203China

This paper presents a first monolithic RF transceiver for DC-OFDM UWB *** proposed direct-conversion transceiver integrates all the building blocks including two receiver（Rx） cores,two transmitter （Tx） cores and a dual-carrier frequency synthesizer（DC-FS） as well as a 3-wire serial peripheral interface（SPI） to set the operating status of the *** ESD-protected chip is fabricated by a TSMC 0.13-μm RF CMOS process with a die size of 4.5 x 3.6 *** measurement results show that the wideband Rx achieves an NF of 5-6.2 dB,a max gain of 76-84 dB with 64-dB variable gain,an in-/out-of-band IIP3 of-6/＋4 dBm and an input loss S11 of〈-10 in all *** Tx achieves an LOLRR/IMGRR of-34/-33 dBc,a typical OIP3 of＋6 dBm and a maximum output power of -5 *** DC-FS outputs two separate carriers simultaneously with an inter-band hopping time of〈1.2 *** full chip consumes a maximum current of 420 mA under a 1.2-V supply.

关键词： DC-OFDM UWB RF transceiver receiver transmitter synthesizer CMOS

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A low reference spur quadrature phase-locked loop for UWB systems

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Journal of Semiconductors 2011年第11期32卷 132-138页

作者：傅海鹏蔡德鋆任俊彦李巍李宁 State Key Laboratory of ASIC & System Fudan University Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan University

This paper presents a low phase noise and low reference spur quadrature phase-locked loop （QPLL） circuit that is implemented as a part ofa fi＇equency synthesizer for China UWB standard systems. A glitch-suppressed charge pump （CP） is employed for reference spur reduction. By forcing the phase frequency detector and CP to operate in a linear region of its transfer function, the linearity of the QPLL is further improved. With the proposed series-quadrature voltage-controlled oscillator, the phase accuracy of the QPLL is guaranteed. The circuit is fab- ricated in the TSMC 0.13/Jm CMOS process and operated at 1.2-V supply voltage. The QPLL measures a phase noise of -95 dBc/Hz at 100-kHz offset and a reference spur of-71 dBc. The fully-integrated QPLL dissipates a current of 13 mA.

关键词： QPLL charge pump UWB glitch S-QVCO

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A dual-mode 6-9 GHz transmitter for OFDM-UWB

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Journal of Semiconductors 2011年第5期32卷 92-98页

作者：陈云锋高亭李巍李宁任俊彦 State Key Laboratory of ASIC & System Fudan University Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan University

This paper presents a fully integrated dual-mode 6 to 9 GHz transmitter for both WiMedia and China MB-OFDM UWB applications. The proposed transmitter consists of a dual-mode I/Q LPF, an up-conversion mixer, a two-stage power driver amplifier and a broadband high-speed frequency divider with LO buffers for I/Q LO carrier generation. The measurement results show that the gain ripple of the transmitter is within ±1.5/±2.8 dB from 6 to 8.7/9 GHz. The output IP3 is about ＋13.2 dBm, the output 1 dBCP is around ＋2.8 dBm, and the LO leakage/sideband rejection ratio is about-35/-38 dBc. The ESD protected chip is fabricated with a TSMC 0.13 μm RFCMOS process with a die size of 1.6 × 1.3 mm^2 and the core circuit consumes only 46 mA under a 1.2 V supply.

关键词： dual-mode MB-OFDM UWB transmitter CMOS

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Harmonic-suppressed quadrature-input frequency divider for OFDM systems

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Journal of Semiconductors 2011年第12期32卷 116-120页

作者：傅海鹏任俊彦李巍李宁 State Key Laboratory of ASIC & System Fudan University Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan University

A fully balanced harmonic-suppressed quadrature-input frequency divider is proposed. The trequency divider improves the quadrature phase accuracy at the output by using both input I/Q signals. Compared with conventional dividers, the circuit achieves an output 1/Q phase sequence that is independent of the input I/Q phase sequence. Moreover, the third harmonic is effectively suppressed by employing a double degeneration technique. The design is fabricated in TSMC 0.13-#m CMOS and operated at 1.2 V. While locked at 8.5 GHz, the proposed divider measures a maximum third harmonic rejection of 45 dB and a phase noise of-124 dBc/Hz at a 10 MHz offset. The circuit achieves a locking range of 15% while consuming a total current of 4.5 mA.

关键词： quadrature-input Miller divider UWB

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A 6.2–9.5 GHz receiver for Wimedia MB-OFDM and China UWB standard

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science China(Information sciences) 2011年第2期54卷 407-418页

作者： GAO Ting1, ZHOU Feng1, LI Wei1, LAN Fei1, LI Ning1 & REN JunYan1,2 1state key laboratory of asic & system, Fudan University, Shanghai 201203, China 2micro-/Nano-Electronics science and technology innovation platform, Shanghai 201203, China 1. State Key Laboratory of ASIC & System Fudan University Shanghai 201203 China2. Micro-/Nano-Electronics Science and Technology Innovation Platform Shanghai 201203 China

An integrated 6.2–9.5 GHz UWB receiver for both WiMedia MB-OFDM and China UWB standard is proposed. The receiver can cover Group#3, Group#4 for WiMedia and Group#2–5 for China UWB standard respectively. The fully differential receiver consists of a wideband LNA and a down conversion mixer with high gain and low gain mode. A low-pass filter with controllable gain and cut-o? frequency along with a programmable gain amplifier are also included. The chip was fabricated in TSMC 0.13-μm RF CMOS process. Measurement results show that the receiver achieves voltage gain from 21 to 69 dB with 2 dB/step and an NF of 3.2–4.6 dB over 6.2–9.5 GHz and 1-dB compression point of ?21 dBm. The intermediate frequency of the receiver can be switched between 264 and 132 MHz, which enables the receiver applicable for both WiMedia and China UWB standard. Power consumption is only 47 mA with 1.2–V supply voltage.

关键词： CMOS ultra-wideband (UWB) MB-OFDM China UWB standard radio frequency (RF) low noise amplifier (LNA) quadrature mixer low-pass filter (LPF) Gm-C noise figure

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A current-mode RF transmitter for 6–9 GHz MB-OFDM UWB application

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science China(Information sciences) 2011年第2期54卷 419-428页

作者： CHEN YunFeng1, FAN JinHan1, LI Wei1, LI Ning1 & REN JunYan1,2 1state key laboratory of asic & system, Fudan University, Shanghai 201203, China 2micro-/Nano-Electronics science and technology innovation platform, Fudan University, Shanghai 201203, China 1. State Key Laboratory of ASIC & System Fudan University Shanghai 201203 China2. Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan University Shanghai 201203 China

This paper presents a current-mode 6–9 GHz RF transmitter for MB-OFDM UWB systems. The proposed current-mode transmitter consists of current-mode IQ LPF, current mirror amplifier, IQ up-conversion mixer (up-mixer), differential power driver amplifier (PA) and high-speed divider with LO buffers for generating IQ LO signals. All circuits are designed to possess high linearity and wide bandwidth. The transmitter is fabricated in TSMC 0.13 μm 1P8M RF CMOS technology with a die area of 1.56 mm2. Measurement results show that a maximum output power of -0.7 dBm with an LO leakage/sideband rejection ratio (LOL/SB RR) around -33/ - 35 dBc is achieved, and that this transmitter excels the traditional voltage-mode counterpart in terms of high linearity (about +1 dBm output 1-dB compression point, +10 dBm output IP3 in average) with comparable power consumption (drawing 48 mA current from 1.2 V supply).

关键词： current-mode RF transmitter high linearity MB-OFDM UWB high speed divider CMOS

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Memory efficient LDPC decoder design

Memory efficient LDPC decoder design

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3rd IEEE Asia Pacific Conference on Postgraduate Research in microelectronics and Electronics, PrimeAsia 2011

作者： Yao, Yuan Liang, Wei Ye, Fan Ren, Junyan State Key Laboratory of ASIC and System Fudan University Shanghai China State Key Laboratory of ASIC and System Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan University Shanghai China

ISBN: (纸本)9781457716096

Hardware complexity of LDPC decoders, which is caused by storage and processing of massive information, is the major reason that encumbers LDPC codes from widely application. Reducing the quantization word length of decoding information can effectively decrease the hardware complexity. But for the absolute value of information keeps increasing during decoding, short word length with finite quantization ranges will lead to serious saturation errors and damage decoding performance. Two quantization schemes is proposed in this paper to reduce the number of memory bits required by decoder design by using short word length while guarantee bit-error-rate (BER) performance. Results shows that these two quantization schemes can simplify the hardware complexity with very little loss of decoding performance. © 2011 IEEE.

关键词： Bit error rate

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