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Plasmon-enhanced ultra-high photoresponse of single-wall carbon nanotube/copper/silicon near-infrared photodetectors

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Nano Research 2024年第7期17卷 5930-5936页

作者： Yi-Ming Zhao Xian-Gang Hu Chao Chen Zuo-Hua Wang An-Ping Wu Hong-Wang Zhang peng-xiang hou Chang Liu Hui-Ming Cheng Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Single wall carbon nanotube(SWCNT)/Si heterojunction photodetectors have the advantages of high photoresponse ability and simple structure,however,their detection wavelength range are usually lower than 1100 nm,which limits their application in the infrared *** report a SWCNT/Cu/Si photodetector with both a high photoresponse and a detection range up to the infrared band by depositing a Cu nanoparticles(NPs)layer between a SWCNT film and a n-Si *** was found that the Cu NPs produce strong surface plasmon resonance(SPR)under laser irradiation,which breaks through the limitation of Si band gap and greatly improves the photoresponse of the SWCNT/Cu/Si photodetector in the near infrared *** responsivity(R)of the photodetector in the wavelength range of 1850–1200 nm reached 2.2–14.15 mA/W,which is the highest value in the reported plasmon enhanced n-Si based photodetectors,and about 20,000 times higher than that of a SWCNT/Si *** R value for 1550 nm wavelength used in optical communications reached~8.2 mA/W,which is 64%higher than the previously reported values of commonly used *** attribute the significant increase to the strong SPR and low Schottky barrier of Cu with n-Si,which facilitates the generation and transfer of the carriers.

关键词： single wall carbon nanotube photodetector silicon surface plasmon resonance copper

Three-dimensional interconnected graphene network-based high-performance air electrode for rechargeable zinc‒air batteries

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SusMat 2024年第3期4卷 192-203页

作者： Jia-Xing An Yu Meng Hong-Bo Zhang Yuanzhi Zhu Xiaohua Yu Ju Rong peng-xiang hou Chang Liu Hui-Ming Cheng Jin-Cheng Li Faculty of Chemical Engineering Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus MaterialsKunming University of Science and TechnologyKunmingChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyangChina Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunmingChina

Although zinc-air batteries(ZABs)are regarded as one of the most prospective energy storage devices,their practical application has been restricted by poor air electrode ***,we developed a free-standing air electrode that is fabricated on the basis of a multifunctional three-dimensional interconnected graphene ***,a three-dimensional interconnected graphene network with fast mass and electron transport ability,prepared by catalyzing growth of graphene foam on nickel foam and then filling reduced graphene oxide into the pores of graphene foam,is used to anchor iron phthalocyanine molecules with atomic Fe-N_(4)sites for boosting the oxygen reduction during discharging and nanosized FeNi hydroxides for accelerating the oxygen evolution during *** a result,the obtained air electrode exhibited an ultra-small electrocatalytic overpotential of 0.603 V for oxygen reactions,a high peak power density of 220.2mWcm^(-2),and a small and stable charge-discharge voltage gap of 0.70 V at 10mA cm^(-2)after 1136 ***,in situ Raman spectroscopy together with theoretical calculations confirmed that phase transformation of FeNi hydroxides takes place fromα-Ni(OH)_(x)toβ-Ni(OH)_(x)toγ-Ni^((3+δ)+)OOH for the oxygen evolution reaction and Ni is the active center while Fe enhances the activity of Ni active sites.

关键词： in situ Raman interconnected graphene network iron phthalocyanine NiFe hydroxide zinc‒air battery

Erratum to: Tannic acid coated single-wall carbon nanotube membranes for the recovery of Au from trace-level solutions

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Nano Research 2024年第4期17卷 3426-3426页

作者： Chunmei Wang peng-xiang hou Yiming Zhao Chao Shi Jiangang Zhang An-Ping Wu Chang Liu Hui-Ming Cheng Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Analysis and Test Center Shenyang University of Chemical TechnologyShenyang 110142China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Materials Science and Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Erratum to Nano Research,2023,16(8):11350–11357 https://***/10.1007/s12274-023-5803-y The article"Tannic acid coated single-wall carbon nanotube membranes for the recovery of Au from trace-level solutions",written by Chunmei Wang et al.,was erroneously originally published electronically on the publisher’s internet portal(currently SpringerLink)on 27 June 2023 with Fig.3(a).In Fig.3(a),the rejection of MWCNT is 38.9%instead of 98.3%.

关键词： carbon solutions coated

High-performance single-wall carbon nanotube transparent conductive films

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Journal of Materials Science & Technology 2019年第11期35卷 2447-2462页

作者： Song Jiang peng-xiang hou Chang Liua Hui-Ming Cheng Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Physical Science and Technology ShanghaiTech UniversityShanghai200031China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai200050China University of Chinese Academy of Sciences Beijing100049China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Tsinghua-Berkeley Shenzhen Institute Tsinghua UniversityShenzhen518055China

A single-wall carbon nanotube(SWCNT)has superior optical,electrical,and mechanical properties due to its unique structure and is therefore expected to be able to form flexible high-performance transparent conductive films(TCFs).However,the optoelectronic performance of these films needs to be improved to meet the requirements of many *** electrical resistivity of SWCNTTCFs is mainly determined by the intrinsic resistivity of individual SWCNTs and their junction resistance in *** analyze these key factors and focus on the optimization of SWCNTs and their networks,which include the diameter,length,crystallinity and electrical type of the SWCNTs,and the bundle size and interconnects in networks,as well as chemical doping and microgrid *** conclude that isolated/small-bundle,heavily doped metallic or semiconducting SWCNTs with a large diameter,long length and high crystallinity are necessary to fabricate high-performance SWCNTTCFs.A simple,controllable way to construct macroscopic SWCNT networks with Y-type connections,welded junctions or microgrid design is important in achieving a low ***,some insights into the key challenges in the manufacture and use of SWCNT TCFs and their prospects are presented,hoping to shed light on promoting the practical application of SWCNT TCFs in future flexible and stretchable optoelectronics.

关键词： Single-wall carbon nanotube Transparent conductive film Junction resistance Bundle Doping

Air-stable room-temperature photodetector based on large-diameter small-bundle single-wall carbon nanotube films

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Journal of Materials Science & Technology 2021年第14期73卷 205-209页

作者： Zha-Kun Chen Xian-Gang Hu Shu-Yu Guo peng-xiang hou Chang Liu Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

*** Photodetectors are of great importance for a variety of industrial and scientific applications,such as in spectroscopy,solar energy harvesting,thermo-therapy,military detection,and a variety of biochemical sensors[1–5].Nowadays,relatively mature light detectors are mainly based on semiconducting materials including Ga N,In Ga As and Hg Cd Te[6,7],and their light detection capability can reach 1011 Jones.

关键词： bundle harvesting carbon

Tannic acid coated single-wall carbon nanotube membranes for the recovery of Au from trace-level solutions

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Nano Research 2023年第8期16卷 11350-11357页

The efficient recovery of gold from industrial sewage is important for saving precious metals and remains a big *** report the extraction of gold ions from a trace-level aqueous solution using a tannic acid(TA)coated single-wall carbon nanotube(SWCNT)*** TA has many redox ligands that efficiently adsorb Au(III)from the solution and reduce them to Au *** interwoven SWCNTs not only act as a framework to improve the mechanical stability of the hybrid membrane,but also provide abundant paths for H_(2)O transport,and facilitate the full exposure of the *** a result,the hybrid membrane has an excellent ability to capture gold ions from solution with a high flux of 157 L/(m^(2)·h·bar),and an ultra-high adsorption capacity of 2095 mg/g from solutions with an extremely low gold concentration of 20 *** adsorbed gold ions are reduced to Au particles,which can be easily collected by *** recovered Au nanoparticles on the TA–SWCNT hybrid film had a remarkable surface-enhanced Raman scattering effect that enabled the sensitive detection of rhodamine 6G.

关键词： carbon nanotube tannic acid membrane Au recovery redox reaction

The importance of H_(2) in the controlled growth of semiconducting single-wall carbon nanotubes

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Journal of Materials Science & Technology 2020年第19期54卷 105-111页

作者： Feng Zhang Jia Sun Yonggang Zheng peng-xiang hou Chang Liu Min Cheng Xin Li Hui-Ming Cheng Zhen Chen Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of Chin1Shenyang 110016China International Research Center for Computational Mechanics State Key Laboratory of Structural Analysis for Industrial EquipmentDepartment of Engineering MechanicsFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024China Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen InstituteTsinghua UniversityShenzhen 518055China Department of Civil and Environmental Engineering University of MissouriColumbi1MO 65211USA

H_(2) is considered an indispensable component of the atmosphere for the growth of high-quality singlewall carbon nanotubes(SWCNTs)by chemical vapor ***,details of the roles H_(2) playing are still unclear due to the complex conditions of SWCNT *** this study,we elucidate the functions of H_(2) in the selective growth of semiconducting SWCNTs(s-SWCNTs)by using monodispersed uniform Fe nanoparticles as a ***-quality s-SWCNTs were synthesized by finely tuning the concentration of H_(2) and the other growth *** data combined with atomistic simulations indicate that H_(2) not only adjusts the concentration of the carbon source,but also serves as a mild etchant that selectively removes small carbon caps grown by a perpendicular mode from the Fe *** results provide useful hints for the controlled growth of SWCNTs with a semiconducting or metallic conductivity,and even a specific chirality.

关键词： Single-wall carbon nanotubes Controlled growth Semiconducting Growth mode H_(2)

Mechanical properties and microstructure of Mg-treated and Catreated industrial H13 steel after quenching and tempering

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Journal of Iron and Steel Research International 2024年第8期31卷 1987-2001页

作者： Jun-ying Yue Dong hou De-yong Wang Tian-peng Qu xiang-long Li Jun Tian School of Iron and Steel Soochow UniversitySuzhou 215021JiangsuChina

The effect of magnesium treatment and calcium treatment on the microstructure and mechanical properties of industrial H13 steel after quenching and tempering was *** impact toughness and tensile tests were mainly carried out,and the microstructure was observed by scanning electron microscopy,electron backscattered diffraction,and X-ray *** results show that magnesium treatment is still feasible in industrial *** is mainly manifested in the refinement of lath martensite and *** with calcium treatment,the prior austenite grains and carbides size of industrial H13 steel treated with magnesium decreased by 3.17μm after *** quenching and tempering,the carbides(especially V-rich carbides)in Mg treatment obviously spheroidized and distributed uniformly and increased in quantity *** lath martensite size is reduced from 2.45 to 2.31μ*** suggests that magnesium treatment was able to yield smaller grains and more evenly distributed ***,the impact toughness,yield strength,and ultimate tensile strength of industrial H13 steel with magnesium treatment increased by 28%,65.5 MPa and 123.7 MPa,*** increment of strength mainly comes from dislocation strengthening,grain refinement strengthening,and precipitation strengthening,among which precipitation strengthening accounts for the largest proportion.

关键词： Industrial H13 steel Mg treatment Heat treatment Carbide-Mechanical property

Terminal attitude selection method of missile attack aircraft

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Chinese Journal of Aeronautics 2024年第2期37卷 385-400页

作者： peng hou Yang PEI Yuxue GE Mengjie ZHU School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China Research Department Shanghai Electro-Mechanical Engineering InstituteShanghai 201108China

The appropriate terminal attitude of missile is important to improve the damage effectiveness of fragmentation warhead against aircraft *** this paper,three missile terminal attitude selection methods are proposed to solve the problem of terminal attitude selection in different situations according to their respective evaluation *** MVE-based method uses the damage probability of each detonation point around the aircraft at a given attitude of missile to calculate the Mean Volume of Effectiveness(MVE)at the corresponding attitude,and then uses the MVE for different attitudes to select the terminal strike *** detonation position-based method addresses the case where the missile detonation position can be assessed in *** the effects of missile guidance errors and fuze activation position errors,Monte Carlo simulations are used to calculate the damage probability of aircraft with different strike attitudes,from which the terminal strike attitude is *** BP-ANN model-based method uses the constructed Back Propagation Artificial Neural Network(BP-ANN)model instead of simulation to calculate the evaluation indexes in the corresponding cases of MVE-based method and Detonation position-based method,which can improve the efficiency of attitude *** are conducted for different scenarios to verify the feasibility and effectiveness of the proposed method.

关键词： Aircraft vulnerability Attitude selection BP-ANN Damage probability Damage effectiveness