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Author Correction: Direct identification of Mott Hubbard band pattern beyond charge density wave superlattice in monolayer 1T-NbSe2

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Nature communications 2021年第1期12卷 2819页

作者： Liwei Liu Han Yang Yuting Huang Xuan Song Quanzhen Zhang Zeping Huang Yanhui Hou Yaoyao Chen Ziqiang Xu Teng Zhang Xu Wu Jiatao Sun Yuan Huang Fawei Zheng Xianbin Li Yugui Yao Hong-Jun Gao Yeliang Wang School of Information and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices Beijing Institute of Technology Beijing China. liwei.liu@***. School of Information and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices Beijing Institute of Technology Beijing China. State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun China. Institute of Physics Chinese Academy of Sciences Beijing China. Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) and School of Physics Beijing Institute of Technology Beijing China.

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Manipulation of Amorphous‐to‐Crystalline Transformation: Towards the Construction of Covalent Organic Framework Hybrid Microspheres with NIR Photothermal Conversion Ability

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Angewandte Chemie 2016年第45期128卷

作者： Jing Tan Supawadee Namuangruk Weifu Kong Nawee Kungwan Jia Guo Changchun Wang State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Lab of Advanced Materials Fudan University 220 Handan Road Shanghai 200433 China National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency Pathumthani 12120 Thailand Department of Chemistry Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand

An approach to transforming amorphous organic networks into crystalline covalent organic frameworks (COFs) with retention of the colloidal nanosize and uniform morphology is presented. Specifically, Fe 3 O 4 nanoclusters are encapsulated by a disordering polyimine network via the Schiff‐base reaction. The formed imine bonds could be reconstructed under thermodynamic control to reform the polyimine networks into imine‐linked COFs in situ. Such a core–shell microsphere exhibits the uniform size and spherical shape, controllable COF shell thickness, accessible surface modification, and improved solution dispersibility as well as maintenance of high surface area, periodic micropores, and superior magnetic responsiveness. Additionally, the photothermal conversion effect is demonstrated for the first time on the nanoCOF layers upon exposure to near infrared light, providing convincing evidence for potential use in phototherapy.

关键词： Imine Kompositmikrokügelchen Kovalente organische Gerüste Nanocluster Photothermische Umwandlung

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NTIRE 2022 Challenge on Efficient Super-Resolution: Methods and Results

arXiv

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arXiv 2022年

作者： Li, Yawei Zhang, Kai Timofte, Radu Van Gool, Luc Kong, Fangyuan Li, Mingxi Liu, Songwei Du, Zongcai Liu, Ding Zhou, Chenhui Chen, Jingyi Han, Qingrui Li, Zheyuan Liu, Yingqi Chen, Xiangyu Cai, Haoming Qiao, Yu Dong, Chao Sun, Long Pan, Jinshan Zhu, Yi Zong, Zhikai Liu, Xiaoxiao Hui, Zheng Yang, Tao Ren, Peiran Xie, Xuansong Hua, Xian-Sheng Wang, Yanbo Ji, Xiaozhong Lin, Chuming Luo, Donghao Tai, Ying Wang, Chengjie Zhang, Zhizhong Xie, Yuan Cheng, Shen Luo, Ziwei Yu, Lei Wen, Zhihong Wu, Qi Li, Youwei Fan, Haoqiang Sun, Jian Liu, Shuaicheng Huang, Yuanfei Jin, Meiguang Huang, Hua Liu, Jing Zhang, Xinjian Wang, Yan Long, Lingshun Li, Gen Zhang, Yuanfan Cao, Zuowei Sun, Lei Alexander, Panaetov Wang, Yucong Cai, Minjie Wang, Li Tian, Lu Wang, Zheyuan Ma, Hongbing Liu, Jie Chen, Chao Cai, Yidong Tang, Jie Wu, Gangshan Wang, Weiran Huang, Shirui Lu, Honglei Liu, Huan Wang, keyan Chen, Jun Chen, Shi Miao, Yuchun Huang, Zimo Zhang, Lefei Ayazoglu, Mustafa Xiong, Wei Xiong, Chengyi Wang, Fei Li, Hao Wen, Ruimian Yang, Zhijing Zou, Wenbin Zheng, Weixin Ye, Tian Zhang, Yuncheng Kong, Xiangzhen Arora, Aditya Zamir, Syed Waqas Khan, Salman Hayat, Munawar Khan, Fahad Shahbaz Gao, Dandan Zhou, Dengwen Ning, Qian Tang, Jingzhu Huang, Han Wang, Yufei Peng, Zhangheng Li, Haobo Guan, Wenxue Gong, Shenghua Li, Xin Liu, Jun Wang, Wanjun Zeng, Kun Lin, Hanjiang Chen, Xinyu Fang, Jinsheng Zhang, Shuhao Zhang, Yuhao Sinha, Abhishek Kumar Moorthi, S. Manthira Dhar, Debajyoti Yang, Hao-Hsiang Huang, Zhi-Kai Chen, Wei-Ting Chang, Hua-En Kuo, Sy-Yen Tan, Wei Chen, Hao Xu, Qian Narang, Pratik Singh, Usneek Sameen, Syed Khaitan, Harsh Yinghua, Liu Tianlin, Zhang Xiaoming, Zhang Meng, Dingxuan Tian, Chunwei Morshed, Mashrur M. Ahsan, Ahmad Omar Computer Vision Lab ETH Zurich Switzerland University of Würzburg Germany ByteDance Shenzhen China State Key Laboratory for Novel Software Technology Nanjing University China ByteDance Inc China NetEase Inc. China Shenzhen Institutes of Advanced Technology CAS China University of Macau China Shanghai AI Lab Shanghai China Nanjing University of Science and Technology China Amazon Web Services United States China Alibaba DAMO Academy EFC Yuhang District Zhejiang Hangzhou China East China Normal University China Youtu Lab Tencent China Megvii Technology China University of Electronic Science and Technology of China China School of Artificial Intelligence Beijing Normal University China Alibaba Group China Bilibili AI China Nankai-Baidu Joint Lab Nankai University Tianjin China Platform Technologies Tencent Online Video China Higher School of Economics Russia Huawei Moscow Research Center Russia Hunan University China Xidian University China Xilinx Technology Beijing Limited China College of Information Science and Engineering Xinjiang University Urumqi China Department of Electronic Engineering Tsinghua University Beijing China Nanjing University China McMaster University Canada School of Telecommunication Engineering Xidian University Xi’an China School of Computer Science Wuhan University Wuhan China School of Mathematical Science University of Electronic Science and Technology of China Chengdu China School of Computer Science The University of Sydney Sydney Australia Aselsan Research Ankara Turkey School of Electronic and Information Engineering South-Central University for Nationalities Wuhan China Guangdong University of Technology China Fujian Normal University Fuzhou University Jimei University China Design Group China Abu Dhabi United Arab Emirates Monash University Melbourne Australia Mohamed bin Zayed University of AI United Arab Emirates North China Electric Power University Changping District Beijing China The School of Art

This paper reviews the NTIRE 2022 challenge on efficient single image super-resolution with focus on the proposed solutions and results. The task of the challenge was to super-resolve an input image with a magnification factor of ×4 based on pairs of low and corresponding high resolution images. The aim was to design a network for single image super-resolution that achieved improvement of efficiency measured according to several metrics including runtime, parameters, FLOPs, activations, and memory consumption while at least maintaining the PSNR of 29.00dB on DIV2K validation set. IMDN is set as the baseline for efficiency measurement. The challenge had 3 tracks including the main track (runtime), sub-track one (model complexity), and sub-track two (overall performance). In the main track, the practical runtime performance of the submissions was evaluated. The rank of the teams were determined directly by the absolute value of the average runtime on the validation set and test set. In sub-track one, the number of parameters and FLOPs were considered. And the individual rankings of the two metrics were summed up to determine a final ranking in this track. In sub-track two, all of the five metrics mentioned in the description of the challenge including runtime, parameter count, FLOPs, activations, and memory consumption were considered. Similar to sub-track one, the rankings of five metrics were summed up to determine a final ranking. The challenge had 303 registered participants, and 43 teams made valid submissions. They gauge the state-of-the-art in efficient single image super-resolution. © 2022, CC BY.

关键词： Chemical activation

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Electron-Phonon Coupling Suppression by Enhanced Lattice Rigidity in 2D Perovskite Single Crystals for High-Performance X-Ray Detection

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advanced materials (Deerfield Beach, Fla.) 2023年第7期35卷 e2208875页

作者： Bobo Zhang Tao Zheng Jiaxue You Chuang Ma Yucheng Liu Lu Zhang Jun Xi Guohua Dong Ming Liu Shengzhong Frank Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology International Joint Research Center of Shaanxi Province for Photoelectric Materials Science Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China. State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an 710072 China. Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique School of Electronic Science and Engineering Xi'an Jiaotong University No. 28 Xianning West Road Xi'an 710049 China. The Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research School of Electronic Science and Engineering State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China. Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China. University of the Chinese Academy of Sciences Beijing 100039 China.

2D Dion-Jacobson (DJ) perovskite single crystals (PSCs) usually demonstrate better X-ray detection performance than Ruddlesden-Popper (RP) PSCs. However, the mechanism of the improved performance is still elusive. Here, by the aid of strong interactions between dimethylbiguanide (DGA) and PbI , a novel DJ-perovskitoid (DGA)PbI is designed. From the comparison of (DGA)PbI to other 2D PSCs, it is discovered that the tiniest lattice distortion and increased hydrogen bonds in the atom-scaled analysis strengthen lattice rigidity and weaken electron-phonon coupling to suppress disordered scattering of carriers, resulting in significantly improved carrier transport and stability. Therefore, high carrier mobility (78.1 cm V s ) and a pronounced sensitivity of 4869.0 µC Gy cm are achieved using (DGA)PbI , which are the best in 2D Pb-based PSC devices to date. Finally, the (DGA)PbI devices exhibit good spatial resolution in X-ray imaging and excellent long-term stability to work as a promising candidate for medical diagnostics and nondestructive determination.

关键词： 2D perovskite X-ray detection electron-phonon coupling high sensitivity lattice rigidity

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Stretchable Electronics: In‐Plane Deformation Mechanics for Highly Stretchable Electronics (Adv. Mater. 8/2017)

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advanced Materials 2017年第8期29卷

作者： Yewang Su Xuecheng Ping Ki Jun Yu Jung Woo Lee Jonathan A. Fan Bo Wang Ming Li Rui Li Daniel V. Harburg YongAn Huang Cunjiang Yu Shimin Mao Jaehoun Shim Qinglin Yang Pei‐Yin Lee Agne Armonas Ki‐Joong Choi Yichen Yang Ungyu Paik Tammy Chang Thomas J. Dawidczyk Yonggang Huang Shuodao Wang John A. Rogers State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China Department of Civil and Environmental Engineering and Department of Mechanical Engineering Northwestern University Evanston IL 60208 USA School of Engineering Science University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China School of Mechanical Engineering Tianjin University of Science & Technology Tianjin 300222 China Frederick Seitz Materials Research Laboratory Department of Materials Science and Engineering University of Illinois at Urbana‐Champaign Champaign IL 61820 USA Department of Material Science and Engineering Department of Energy Engineering Hanyang University Seoul 133‐791 South Korea Department of Electrical Engineering Stanford University Stanford CA 94305 USA School of Mechanical and Aerospace Engineering Oklahoma State University Stillwater OK 74078 USA State Key Lab Digital Manufacturing Equipment and Technology and Flexible Electronics Research Center Huazhong University of Science and Technology Wuhan Hubei 430074 China Department of Mechanical Engineering University of Houston Houston TX 77204 USA Department of Electrical and Computer Engineering and the Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana‐Champaign Champaign Urbana IL 61820 USA

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Grain Boundaries: Nanoassembly Growth Model for Subdomain and Grain Boundary Formation in 1T′ Layered ReS2(Adv. Funct. Mater. 49/2019)

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advanced Functional Materials 2019年第49期29卷

作者： Xiaobo Li Xiao Wang Jinhua Hong Dongyan Liu Qingliang Feng Zhibin Lei Kaihui Liu Feng Ding Hua Xu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China Center for Multidimensional Carbon Materials Institute for Basic Science School of Materials Science and Engineering Ulsan National Institute of Science and Technology Ulsan 44919 South Korea Nanostructures Research Laboratory Japan Fine Ceramics Center Atsuta Nagoya 456‐8587 Japan School of Science Northwestern Polytechnical University Xi'an 710072 P. R. China State Key Laboratory for Mesoscopic Physics Collaborative Innovation Center of Quantum Matter School of Physics Peking University Beijing 100871 China

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Evidence for the random singlet phase in the honeycomb iridate SrIr2O6

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Physical Review B 2021年第24期103卷 L241114-L241114页

作者： Pengbo Song Kejia Zhu Fan Yang Yuan Wei Lu Zhang Huaixin Yang Xian-Lei Sheng Yang Qi Jiamin Ni Shiyan Li Yanchun Li Guanghan Cao Zi Yang Meng Wei Li Youguo Shi Shiliang Li Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China School of Physics and Materials Science Anhui University Hefei Anhui 230601 China School of Physics Beihang University Beijing 100191 China Yangtze River Delta Physics Research Center Co. Ltd. Liyang Jiangsu 213300 China Center for Field Theory and Particle Physics Department of Physics Fudan University Shanghai 200433 China State Key Laboratory of Surface Physics Department of Physics Fudan University Shanghai 200438 China Multidiscipline Research Center Institute of High Energy Physics Chinese Academy of Science Beijing 100049 China Department of Physics Zhejiang University Hangzhou 310027 China Zhejiang Province Key Laboratory of Quantum Technology and Devices Interdisciplinary Center for Quantum Information and State Key Lab of Silicon Materials Zhejiang University Hangzhou 310027 China Collaborative Innovation Centre of Advanced Microstructures Nanjing University Nanjing 210093 China Department of Physics and HKU-UCAS Joint Institute of Theoretical and Computational Physics The University of Hong Kong Pokfulam Road Hong Kong China International Research Institute of Multidisciplinary Science Beihang University Being 100191 China Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China

Strong spin-orbital-coupling magnetic systems with the honeycomb structure can provide bond-directional interactions which may result in Kitaev quantum spin liquids and exotic anyonic excitations. However, one of the key ingredients in real materials—disorders—has been much less studied in Kitaev systems. Here we synthesized a trigonal SrIr2O6−δ with δ≈0.25, which consists of two-dimensional honeycomb Ir planes with edge-sharing IrO6 octahedra. First-principles computation and experimental measurements suggest that the electronic system is gapped, and there should be no magnetic moment as the Ir5+ ion has no unpaired electrons. However, significant magnetism has been observed in the material, and it can be attributed to disorders that are most likely from oxygen vacancies. No magnetic order is found down to 0.05 K, and the low-temperature magnetic properties exhibit power-law behaviors in magnetic susceptibility and zero-field specific heat, and a single-parameter scaling of the specific heat under magnetic fields. These results provide strong evidence for the existence of the random singlet phase in SrIr2O6−δ, which offers a different member to the family of spin-orbital entangled iridates and Kitaev materials.

关键词： Quantum spin liquid Honeycomb lattice Crystal growth DC susceptibility measurements Density functional theory Resistivity measurements Specific heat measurements

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Crystalline Unipolymer Monolayer with High Modulus and Conductivity

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Angewandte Chemie 2022年第4期135卷

作者： Jinxin Wang Hao Zhang Shumu Li Caijun Ding Yongjie Zhao Xiuzhen Long Chang Wei Yanfang Wang Yongfang Li Lingyun Shen Prof. Shuxun Cui Prof. Wenjing Hong Prof. Mao Li State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences 130022 Changchun China University of Science and Technology of China 230026 Hefei China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen China Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing Mass Spectrum Center 100190 Beijing China Key Lab of Advanced Technologies of Materials Ministry of Education of China Southwest Jiaotong University 610031 Chengdu China

The synthesis of crystalline polymer with a well-defined orientated state and a two-dimensional crystalline size beyond a micrometer will be essential to achieve the highest physical feature of polymer material but remain challenging. Herein, we show the synthesis of the crystalline unipolymer monolayer with an unusual ultrahigh modulus that is higher than the ITO substrate and high conductance by simultaneous electrosynthesis and manipulation. We find that the polymer monolayer has fully extended in the vertical and unidirectional orientation, which is proposed to approach their theoretically highest density, modulus, and conductivity among all aggregation formations of the current polymer. The modulus and current density can reach 40 and 1000 times higher than their amorphous counterpart. It is also found that these monolayers exhibit the bias- and length-dependent multiple charge states and asymmetrically negative differential resistance (NDR) effect, indicating that this unique molecular tailoring and ordering design is promising for multilevel resistive memory devices. Our work demonstrates the creation of a crystalline polymer monolayer for approaching the physical limit of polymer electronic materials and also provides an opportunity to challenge the synthetically iterative limit of an isolated ultra-long polymer.

关键词： Crystalline Polymer High Conductivity High Modulus Iterative Synthesis Monolayer

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High-Efficiency Perovskite Solar Cells with Imidazolium-Based Ionic Liquid for Surface Passivation and Charge Transport

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Angewandte Chemie 2020年第8期133卷

作者： Xuejie Zhu Minyong Du Dr. Jiangshan Feng Hui Wang Zhuo Xu Likun Wang Shengnan Zuo Chenyu Wang Ziyu Wang Cong Zhang Xiaodong Ren Prof. Shashank Priya Dr. Dong Yang Prof. Shengzhong (Frank) Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China Materials Science and Engineering Pennsylvania State University University Park PA 16802 USA

Surface defects have been a key constraint for perovskite photovoltaics. Herein, 1,3-dimethyl-3-imidazolium hexafluorophosphate (DMIMPF 6 ) ionic liquid (IL) is adopted to passivate the surface of a formamidinium-cesium lead iodide perovskite (Cs 0.08 FA 0.92 PbI 3 ) and also reduce the energy barrier between the perovskite and hole transport layer. Theoretical simulations and experimental results demonstrate that Pb-cluster and Pb-I antisite defects can be effectively passivated by [DMIM] + bonding with the Pb 2+ ion on the perovskite surface, leading to significantly suppressed non-radiative recombination. As a result, the solar cell efficiency was increased to 23.25 % from 21.09 %. Meanwhile, the DMIMPF 6 -treated perovskite device demonstrated long-term stability because the hydrophobic DMIMPF 6 layer blocked moisture permeation.

关键词： energy levels ionic liquids passivation perovskites stability

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Exploiting Two-Dimensional Bi2O2Se for Trace Oxygen Detection

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Angewandte Chemie 2020年第41期132卷

作者： Xu S. Fu H. Tian Y. Deng T. Cai J. Wu J. Tu T. Li T. Tan C. Liang Y. Zhang C. Liu Z. Chen Y. Jiang Y. Yan B. Peng H. Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Department of Condensed Matter Physics Weizmann Institute of Science Rehovot 7610001 Israel International Center for Quantum Materials School of Physics Peking University Beijing 100871 China CAS Center for Excellence in Superconducting Electronics (CENSE) State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology (SIMIT) Chinese Academy of Sciences Shanghai 200050 China University of Chinese Academy of Sciences Beijing 100049 China School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional Materials School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 China Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 China ShanghaiTech Laboratory for Topological Physics ShanghaiTech University Shanghai 201210 China Collaborative Innovation Center of Quantum Matter Beijing 100084 China Department of Physics University of Oxford Oxford OX1 3PU United Kingdom Collaborative Innovation Center of Quantum Matter Beijing 100871 China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing China

We exploit a high-performing resistive-type trace oxygen sensor based on 2D high-mobility semiconducting Bi2O2Se nanoplates. Scanning tunneling microscopy combined with first-principle calculations confirms an amorphous Se atomic layer formed on the surface of 2D Bi2O2Se exposed to oxygen, which contributes to larger specific surface area and abundant active adsorption sites. Such 2D Bi2O2Se oxygen sensors have remarkable oxygen-adsorption induced variations of carrier density/mobility, and exhibit an ultrahigh sensitivity featuring minimum detection limit of 0.25 ppm, long-term stability, high durativity, and wide-range response to concentration up to 400 ppm at room temperature. 2D Bi2O2Se arrayed sensors integrated in parallel form are found to possess an oxygen detection minimum of sub-0.25 ppm ascribed to an enhanced signal-to-noise ratio. These advanced sensor characteristics involving ease integration show 2D Bi2O2Se is an ideal candidate for trace oxygen detection. © 2020 Wiley-VCH GmbH

关键词： amorphous layers Bi2O2Se integration oxygen sensors two-dimensional materials

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