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Wide temperature range,air stable,transparent,and self-powered photodetectors enabled by a hybrid film of graphene and singlewalled carbon nanotubes

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Nano Research 2024年第7期17卷 6582-6593页

作者： Ying Yue Di Zhang Pengyu Wang Xin Wu Yuejuan Zhang Yanchun Wang Xiao Zhang Xiaojun Wei Huaping Liu Weiya Zhou Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences and College of materials Science and Optoelectronic Technology University of Chinese Academy of SciencesBeijing 100049China Songshan Lake materials Laboratory Dongguan 523808China Beijing Key Laboratory for Advanced Functional materials and Structure Research Beijing 100190China

transparent photovoltaic devices(TPVDs)have attracted increasing attention in emerging electronic *** the application scenarios extend,there raise higher requirements regarding the stability and operating temperature range of *** this work,a unique preparation strategy is proposed for air stable TPVD with a wide operating temperature range,i.e.,a nanoscale architecture termed as H-TPVD is constructed that integrates a free-standing and highly transparent conductive hybrid film of graphene and single-walled carbon nanotubes(G-SWNT TCF for short)with a metal oxide NiO/TiO_(2)*** preparation approach is suitable for scaling *** to the excellent transparent conductivity of the freestanding G-SWNT hybrid film and the ultrathin NiO/TiO_(2)heterojunction(100 nm),H-TPVD selectively absorbs the ultraviolet(UV)band of sunlight and has a transparency of up to 71%in the visible *** integrated nanoscale architecture manifests the significant holecollecting capability of the G-SWNT hybrid film and the efficient carrier generation and separation within the ultrathin NiO/TiO_(2)heterojunction,resulting in excellent performance of the H-TPVD with a specific detectivity of 2.7×1010 ***,the freestanding G-SWNT TCF is a super stable and non-porous two-dimensional film that can insulate gas molecules,thereby protecting the surface properties of NiO/TiO_(2)heterojunctions and enhancing the stability of *** subjected to 20,000 cycles and storage in air for three months,the performance parameters such as photo-response signal,output power,and specific detectivity show no noticeable *** particular,the as-fabricated self-powered H-TPVD can operate over a wide temperature range from^(−1)80 to 300°C,and can carry out solar-blind UV optical communication in this *** addition,the 4×4 array H-TPVD demonstrates clear optical *** results make it possible for H-TPVD to expand its potential application scenarios.

关键词： transparent photovoltaic devices hybrid films of graphene and single-walled carbon nanotubes metal oxides stability wide temperature range

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High-performance ultrathin Ag electrodes by chemical bond anchoring Ag atoms for stretchable organic light-emitting devices

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Nano Research 2024年第8期17卷 7614-7620页

作者： Yue Qin Yawei Wang Xinxin Wang Yaqi Zhang Jiahao Xu Kanchi Dong Yuehua Chen Wenyong Lai Xinwen Zhang State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced materials(IAM) Nanjing University of Posts and TelecommunicationsNanjing 210023China

The progress of stretchable organic light-emitting devices(OLEDs)has brought about new possibilities for highly functional wearable ***,the efficiency and durability of stretchable OLEDs have been limited by the performance of stretchable transparent ***,we proposed an interface engineering strategy that involves anchoring the growth of silver(Ag)atoms with amine-enriched biomaterials for high-quality stretchable transparent *** strong interactions between the Ag atom and the amine group enable the uniform Ag electrodes at an ultralow thickness of 7 nm,and provide remarkable mechanical flexibility and strain endurance to the Ag *** distinct effects of different amino acids were investigated,and a deep understanding of their unique contributions to the film formation process was *** resulting ultrathin Ag electrodes exhibit outstanding optoelectrical properties(transmittance of~98%and sheet resistance of~8.7Ω/sq)and excellent stretchability during 500 stretching cycles at 100%*** green phosphorescent OLEDs based on the Ag electrodes have been demonstrated with a current efficiency of up to~70.4 cd/***,the devices show excellent stretching stability,retaining~89%of the original luminance and~78%of the original current efficiency after 200 stretching cycles at 100%*** work opens up new possibilities for stretchable transparent electrodes,fostering advancements in wearable displays and other innovative flexible devices.

关键词： transparent flexible electrodes ultrathin metal film interface mechanical stability

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High-performance self-powered ultraviolet photodetector in SnO_(2)microwire/p-GaN heterojunction using graphene as charge collection medium

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Journal of materials Science & Technology 2023年第7期138卷 183-192页

作者： Tong Xu Mingming Jiang Peng Wan Yang Liu Caixia Kan Daning Shi College of physics MIIT Key Laboratory of Aerospace Information Materials and PhysicsKey Laboratory for Intelligent Nano Materials and DevicesNanjing University of Aeronautics and AstronauticsNanjing 211106China

Graphene monolayer has been extensively applied as a transparency electrode material in photoelectronic devices due to its high transmittance,high carrier mobility,and ultrafast carrier *** this study,a high-performance self-powered photodetector,which is made of a SnO_(2)microwire,p-type GaN film,and monolayer graphene transparent electrode,was proposed and *** detector is sensitive to ultraviolet light signals and illustrates pronounced detection performances,including a peak respon-sivity∼223.7 mA W^(-1),a detectivity∼6.9×10^(12)Jones,fast response speed(rising/decaying times∼18/580μs),and excellent external quantum efficiency∼77%at 360 nm light illumination without exter-nal power *** with the pristine SnO_(2)/GaN photodetector using ITO electrode,the device performances of responsivity and detectivity are significantly increased over 6×10^(3)%and 3×10^(3)%,*** performance-enhanced characteristics are mainly attributed to the high-quality het-erointerface of n-SnO_(2)/p-GaN,the highly conductive capacity,and the unique transparency of graphene ***,the built-in potential formed at the SnO_(2)/GaN heterojunction interface could be strengthened by the Schottky potential barrier derived from the graphene electrode and SnO_(2)wire,en-hancing the carrier collection efficiency through graphene as a charge collection *** work is of great importance and significance to developing excellent-performance ultraviolet photodetectors for photovoltaic and optoelectronic applications in a self-powered operation manner.

关键词： Self-powered photodetector SnO_(2)microwires Monolayer graphene electrode Heterojunction Schottky barrier

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Total conversion of centimeter-scale nickel foam into single atom electrocatalysts with highly selective CO_(2)electrocatalytic reduction in neutral electrolyte

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Nano Research 2023年第2期16卷 2003-2010页

作者： Qikui Fan Pengfei Gao Shan Ren Yunteng Qu Chuncai Kong Jian Yang Yuen Wu Ministry of Education Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic PhysicsSchool of PhysicsXi’an Jiaotong UniversityXi’an 710049China Shenzhen Key Laboratory of Special Functional materials Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Northwest Institute of Nuclear Technology Xi’an 710024China Institute of Functional Nano&Soft materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China State Key Laboratory of Photoelectric Technology and Functional materials International Collaborative Center on Photoelectric Technology and Nano Functional MaterialsInstitute of Photonics and Photon-TechnologyNorthwest UniversityXi’an 710069China Department of Chemistry iChEM(Collaborative Innovation Center of Chemistry for Energy Materials)University of Science and Technology of ChinaHefei 230026China

To improve the atomic utilization of metals and reduce the cost of industrialization,the one-step total monoatomization of macroscopic bulk metals,as opposed to nanoscale metals,is *** this study,we used a thermal diffusion method to directly convert commercial centimeter-scale Ni foam to porous Ni single-atom-loaded carbon nanotubes(CNTs).As expected,owing to the coating of single-atom on porous,highly conductive CNT carriers,Ni single-atom electrocatalysts(Ni-SACs)exhibit extremely high activity and selectivity in CO_(2)electroreduction(CO_(2)RR),yielding a current density of>350 mA/cm^(2),a selectivity for CO of>91%under a flow cell configuration using a 1 M potassium chloride(KCl)*** on the superior activity of the Ni-SACs electrocatalyst,an integrated gas-phase electrochemical zero-gap reactor was introduced to generate a significant amount of CO current for potential practical *** overall current can be increased to 800 mA,while maintaining CO Faradaic efficiencies(FEs)at above 90%per unit *** findings and insights on the active site transformation mechanism for macroscopic bulk Ni foam conversion into single atoms can inform the design of highly active single-atom catalysts used in industrial CO_(2)RR systems.

关键词： Ni single atom electrocatalyst CO_(2)electroreduction to CO neutral electrolyte thermal diffusion

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Long-term stability of transparent n/p ZnO homojunctions grown by rf-sputtering at room-temperature

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Journal of Materiomics 2019年第3期5卷 428-435页

作者： V.Kampylafka A.Kostopoulos M.Modreanu M.Schmidt E.Gagaoudakis K.Tsagaraki V.Kontomitrou G.Konstantinidis G.Deligeorgis G.Kiriakidis E.Aperathitis Microelectronics Research group Institute of Electronic Structure and LaserFoundation for Research and TechnologydFORTH-HellasP.O.Box 1385Heraklion70013CreteGreece Tyndall National Institute-University College Cork Lee MaltingsDyke ParadeCorkIreland Physics Department University of CreteP.O.Box 220871003HeraklionCreteGreece transparent conductive materials&devices group Institute of Electronic Structure&LaserFoundation for Research and Technology FORTH-HellasP.O.Box 1385Heraklion70013CreteGreece

ZnO-based n/p homojunctions were fabricated by sputtering from a single zinc nitride target at room temperature on metal or ITO-coated glass and Si substrates.A multi-target rf-sputtering system was used for the growth of all oxide films as multilayers in a single growth run without breaking the vacuum in the growth *** nitrogen-containing films(less than 1.5 at.% of nitrogen)were n-type ZnO when deposited in oxygen-deficient Ar plasma(10%O_(2))and p-type ZnO when deposited in oxygen-rich Ar plasma(50%O_(2)).The all-oxide homojunction ITO/n-ZnO/p-ZnO/ITO/glass was fabricated in a single deposition run and exhibited visible transparency in the range of 75-85%.The n/p ZnO homojunctions,having metallic contacts,formed on conventionally processed substrates showed a fairly unstable behavior concerning the current-voltage ***,the same homojunctions formed on Si_(3)N_(4)-patterned substrates and stored in atmosphere for a period of five months were stable exhibiting a turn-on voltage of around 1.5 *** realization of a room temperature sputtered transparent and stable ZnO homojunction paves the way to the realization of all-oxide transparent optoelectronic devices.

关键词： ZnO homojunction p-type ZnO Single step sputtering Stability Patterned substrate

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Assemblies and composites of gold nanostructures for functional devices

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Aggregate 2022年第4期3卷 4-14页

作者： Ke He Ying Jiang Ting Wang Zhihua Liu Ming Wang Liang Pan Xiaodong Chen Innovative Centre for Flexible devices(iFLEX) Max Planck–NTU Joint Lab for Artificial SensesSchool of Materials Science and EngineeringNanyang Technological UniversitySingapore

Gold has been one of the most vastly used noble metals due to its unique *** modern manufacturing,gold is extensively used in electronics industry as electrical connectors due to the high conductivity and corrosion *** advancements in gold chemistry and nanofabrication technologies,gold materials can be tailored down to the dimension of nanoscale,which enables various novel ***,it is still a huge challenge to realize practical functional devices by rational utilizing these gold nanostructures-based ***,the recent developments in the design and fabrication of various functional devices based on assemblies and composites of gold nanostructures are *** from the plasmonic effect,optical colorimetric sensors,optoelectronics and surface-enhanced Raman spectroscopy sensors are *** by conductive devices with novel properties,flexible transparent conductors,stretchable electronics,wearable and implantable devices are *** bottom-up and top-down approaches to prepare assemblies and composites are *** addition,the challenges and future developments in the field are also *** is believed that further developments in gold nanostructures-based materials will greatly contribute to the nextgeneration biosensors,optoelectronics,wearable and implantable electronics.

关键词： assemblies composites functional devices gold materials nanostructures

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Efficient Preparation and Characterization of Functional Graphene with Versatile Applicability

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Journal of Harbin Institute of Technology(New Series) 2016年第3期23卷 1-29页

作者： Xingui Li Yang Tao Feiran Li Meirong Huang State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering & College of Materials Science and EngineeringTongji University Shenzhen Engineering Lab of Flexible transparent conductive Films Shenzhen Key Laboratory of Advanced MaterialsSchool of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen Graduate School

Graphene,as star versatile materials having extraordinarily high electric conductivity,electron mobility,thermal conductivity,thermal stability,optical transparency,and mechanical strength,has attracted much attention from scientists and engineers in the field of materials,chemistry,physics,energy,and environment in the last decade and achieved fruitful *** review discusses preparation strategies,functionality,characterization,and applications for two dimensional nanosheet and quasi-onedimensional nanoribbon of graphene through direct exfoliation of graphite,chemical vapor deposition of hydrocarbon,laser-induced direct synthesis of graphene,laser etched graphene oxide in the dry state without the use of toxic reducing agent hydrazine,unzipping carbon nanotube,and polycondensation of polycyclic aromatics on the basis of 178 representative references mostly in *** stabilization of graphene oxide prepared in chemical preparation in " top-down" is *** vital classic methods of characterizing molecular structure,C/O ratio,defect,morphology,single-or few-layered( 2 to 10 layers) structure,porous and hollow structures,including Raman spectroscopy,AFM,SEM,TEM,STM,electron diffraction,X-ray diffraction,and X-ray photoelectron spectroscopy are systematically *** graphene possesses novel incomparable multifunctionalities,its versatile applications as novel conducting additives,reinforcing filler,separation membrane,sensor,anticorrosive coating,catalyst,electromagnetic shield,lubricant,and flexible electrode materials in electrochemical and electronic devices,including photovoltaic cells,supercapacitors,rechargeable batteries,sensors,field effect transistors,light emitting diodes,separation membranes,adsorbents and absorbents,catalysts,electro-optic modulator,terahertz emitter and detector,and semiconductors,have been *** in the aspect of both high performance and cost-effectiveness,graphene is expected to be ev

关键词： graphene graphene oxide nanosheet nanoribbons preparation characterization application

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具有[O_(8)Pb_(14)]簇和宽红外透过范围的Pb_(14)O_(8)I_(12)和Pb_(7)O_(4)I_(6)卤氧化物同质多晶

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Science China materials 2022年第3期65卷 773-779页

作者：焦佳豪阿布都卡地·吐地张敏蔡文兵李俊杰杨志华潘世烈 CAS Key Laboratory of Functional materials and devices for Special Environments/Xinjiang Technical Institute of Physics&Chemistry CAS/Xinjiang Key Laboratory of Electronic Information Materials and DevicesUrumqi 830011China Center of materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

宽透光范围是红外光学材料设计的一个重要因素.中远红外晶体的传统设计主要集中在无氧体系的硫属和磷属化合物.而在卤氧化物中引入重原子,如含孤对电子阳离子Pb^(2+)和卤素阴离子I^(-),可以拓宽红外透过范围.本文通过高温溶液法成功合... 详细信息

宽透光范围是红外光学材料设计的一个重要因素.中远红外晶体的传统设计主要集中在无氧体系的硫属和磷属化合物.而在卤氧化物中引入重原子,如含孤对电子阳离子Pb^(2+)和卤素阴离子I^(-),可以拓宽红外透过范围.本文通过高温溶液法成功合成了两个含Pb(Ⅱ)的卤氧化物同质多晶,Pb_(14)O_(8)I_(12)(α-POI)和Pb_(7)O_(4)I_(6)(β-POI).有趣的是,它们结晶于同一空间群P1,并含有首次发现的[O_(8)Pb_(14)]簇.值得注意的是,POI展现出宽的透光范围(0.47-16.0μm),这表明卤氧化物是设计红外光学材料的优选体系.第一性原理计算表明它们具有较大的双折射(α-和β-POI在1064 nm处分别为0.139和0.108),这使得POI成为潜在的红外光学材料.

关键词：红外光学材料 POI 双折射同质多晶第一性原理计算孤对电子高温溶液法重原子

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Fabrication of patterned transparent conductive glass via laser metal transfer for efficient electrical heating and antibacteria

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Nano Research 2024年第3期17卷 1578-1584页

作者： Xiaoyan Liu Ting Zhang Mengchen Xu Yang Li Haiqing Wang Yuke Chen Xuzihan Zhang Zenan Wang Xiaoyan Li Weijia Zhou Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) School of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China School of Physics and Technology University of JinanJinan 250024China Department of Endodontics School and Hospital of StomatologyCheeloo College of MedicineShandong University&Shandong Key Laboratory of Oral Tissue Regeneration&Shandong Engineering Laboratory for Dental Materials and Oral Tissue RegenerationJinan 250012China School of Information Science and Engineering University of JinanJinan 250022China Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 518055China

Vapor deposition and three-dimensional(3D)printing technology are considered to be conventional methods to achieve patterned metal film preparation through the assistance of masks and high ***,there are still some challenges in fabricating metal films in template-free and normal temperature *** this work,we report a flexible and rapid laser metal transfer(LMT)technique for fabricating the various metal films(Cu,Ni,Sn,Al,Fe,and Ag)with different patterns without templates on arbitrary substrates(glass,polyimide(PI)films,and aluminum nitride(AlN)ceramic).Especially,the obtained transparent conductive glass displays high transmittance(more than 90%)and adjustable resistances(≈5Ω).According to the Joule effect,the interface resistance between Cu particles and copper oxide coating produces the high temperature approximately 280℃ at 2 V in a short time(≈60 s)and remains stable at 120℃ over 12 *** last,the multifunctional glass with Cu patterns also shows excellent bactericidal activity(≈95%).This work demonstrates that laser metal transfer is an exceeding effective means of fabricating the micro/nano structures with potential applications in functional devices.

关键词： laser metal transfer(LMT) transparent conductive glass electrical heating copper pattern antibacterial

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Characterization of ZnO:Al films deposited by r.f. magnetron-sputtering at low temperature

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Science China Mathematics 2002年第3期45卷 394-399页

作者：郝晓涛马瑾马洪磊田茂华曹宝成叶丽娜程传福滕树云 Institute of Optoelectric materials and devices Shandong University Jinan 250100 China

transparent conducting ZnO:AI thin films with good adhesion and Iow resistivity have been prepared on organic substrates and Coming 7059 glass substrates by r.f. magnetron-sputtering technique at Iow substrate temperature (25-210℃). Structural and photoelectric properties of the deposited films are investigated. The deposited films are polycrystalline with hexagonal structure and a preferred orientation with the c-axis perpendicular to the substrate. Only the (002) peak is *** quality films with resistivity as Iow as 1.0 x 10- 3Ω@ cm and 8.4 x 10- 4Ω@ cm, the average transmittance over 74% and 85% in the wavelength range of the visible spectrum have been obtained on different substrates.

关键词： organic substrate, aluminum doped zinc oxide film, transparent conductive film.

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