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CsPbI nanorods as the interfacial layer for high-performance,all-solution-processed self-powered photodetectors

Journal of materials Science & Technology 2021年第16期 196-204页

作者： Muhammad Imran Saleem Shangyi Yang Attia Batool Muhammad Sulaman Chandrasekar Perumal Veeramalai Yurong Jiang Yi Tang Yanyan Cui Libin Tang Bingsuo Zou Beijing key laboratory of Nanophotonics and Ultrafine Optoelectronic Systems.Center for Micro-Nanotechnology School of PhysicsKey Laboratory of Advanced Optoelectronic Quantum Design and Measurement.Ministry of EducationBeijing Institute of TechnologyBeijing 100081China Kunming Institute of Physics Kunming 650223China Research Center for materials Science Beijing Institute of TechnologyBeijing 100081China Beijing key laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Heterojunction is regarded as a crucial step toward realizing high-performance devices,particularly,forming gradient energy band between heterojunctions benefits self-powered ***,in this paper,the synthesis of CsPbI3 nanorods(NRs)and its application as the interfacial layer in high-performance,all-solution-processed self-powered photodetectors are *** the bilayer photodetector ITO/ZnO(100 nm)/PbS-TBAI(150 nm)/Au,a responsivity of 3.6 A/W with a specific detectivity of 9.8×10^(12)Jones was obtained under 0.1 mW/cm^(2)white light illumination at zero bias(*** self-powered mode).Meanwhile,the photocurrent was enhanced to an On/Off current ratio of 105 at zero bias with an open circuit voltage of 0.53 V for trilayer photodetector ITO/ZnO(100 nm)/PbSTBAI(150 nm)/CsPbI3(250 nm)/Au,in which the CsPbI3 NRs layer works as the interfacial *** a result,a specific detectivity of 4.5×10^(13)Jones with a responsivity of 11.12 A/W was obtained under0.1 mW/cm^(2) white light illumination,as well as the rising/decaying time of 0.57 s/0.41 s with excellent stability and reproducibility upto four weeks in *** enhanced-performance is ascribed to the mismatch bandgap between PbS-TBAI/CsPbI_(3)interface,which can suppress the carrier recombination and provide efficient transport passages for charge ***,it provides a feasible and efficient method for high-performance photodetectors.

关键词： Perovskite Interfacial layer Charge carrier recombination Built-in potential Charge carrier separation Self-powered photodetector

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A highly sensitive chemical gas detecting transistor based on highly crystalline CVD-grown MoSe2 films

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Nano Research 2017年第6期10卷 1861-1871页

作者： Jongyeol Baek Demin Yin Na Liu Inturu Omkaram Chulseung Jung Healin Im Seongin Hong Seung Min Kim Young Ki Hong Jaehyun Hur Youngki Yoon Sunkook Kim Multi-Functional Nano/Bio Electronics Lab. Kyung Hee University Gyeonggi 446-701 Republic of Korea Department of Electrical and Computer Engineering & Waterloo Institute for Nanotechnology (WIN) University of Waterloo Waterloo ON N2L 3GI Canada Institute of advanced Composite materials Korea Institute of Science and Technology (KIST) Jeonbuk 565-905 Republic of Korea Department of Chemical and Biological Engineering Gachon University Seongnam-si Gyeonggi 13120 Republic of Korea

Layered semiconductors with atomic thicknesses are becoming increasingly important as active elements in high-performance electronic devices owing to their high carrier mobilities, large surface-to-volume ratios, and rapid electrical responses to their surrounding environments. Here, we report the first implementation of a highly sensitive chemical-vapor-deposition-grown multilayer MoSe2 field-effect transistor （FET） in a NO2 gas sensor. This sensor exhibited ultra-high sensitivity （S = ca. 1,907 for NO2 at 300 ppm）, real-time response, and rapid on-off switching. The high sensitivity of our MoSe2 gas sensor is attributed to changes in the gap states near the valence band induced by the NO2 gas absorbed in the MoSe2, which leads to a significant increase in hole current in the off-state regime. Device modeling and quantum transport simulations revealed that the variation of gap states with NO2 concentration is the key mechanism in a MoSe2 FET-based NO2 gas sensor. This comprehensive study, which addresses material growth, device fabrication, characterization, and device simulations, not only indicates the utility of MoSe2 FETs for high-performance chemical sensors, but also establishes a fundamental understanding of how surface chemistry influences carrier transport in layered semiconductor devices.

关键词： transition metaldichalcogenides MoSe2 chemical sensors chemical vapor depositon

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Recent advances in cathode catalyst architecture for lithium–oxygen batteries

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eScience 2023年第4期3卷 65-80页

作者： Yin Zhou Shaojun Guo School of materials Science and Engineering Peking UniversityBeijing100871China

Lithium–oxygen(Li–O_(2))batteries have great potential for applications in electric devices and vehicles due to their high theoretical energy density of 3500 Wh kg^(-1).Unfortunately,their practical use is seriously limited by the sluggish decomposition of insulating Li_(2)O_(2),leading to high OER overpotentials and the decomposition of cathodes and *** electrocatalysts with high oxygen reduction reaction(ORR)and oxygen evolution re-action(OER)activities are critical to alleviate high charge overpotentials and promote cycling stability in Li–O_(2)***,constructing catalysts for high OER performance and energy efficiency is always *** this mini-review,we first outline the employment of advanced electrocatalysts such as carbon materials,noble and non-noble metals,and metal–organic frameworks to improve battery *** then detail the ORR and OER mechanisms of photo-assisted electrocatalysts and single-atom catalysts for superior Li–O_(2)battery ***,we offer perspectives on future development directions for cathode electrocatalysts that will boost the OER kinetics.

关键词： Lithium–oxygen batteries Charge polarizations Energy barrier Electrocatalysts

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NIR‑II‑Triggered Composite Nanofibers to Simultaneously Achieve Intracranial Hemostasis,Killing Superbug and Residual Cancer Cells in Brain Tumor Resection Surgery

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advanced Fiber materials 2023年第1期5卷 209-222页

作者： Jun Yang Lei Xu Yining Ding Chang Liu Bingchang Wang Yanchao Yu Chao Hui Seeram Ramakrishna Jun Zhang Yunze Long Collaborative Innovation Center for Nanomaterials&devices College of PhysicsQingdao UniversityQingdao 266071People’s Republic of China Center for Nanofibers&Nanotechnology Department of Mechanical EngineeringNational University of SingaporeSingapore 117574Singapore

Malignant glioblastoma(GBM)is prone to relapse due to the inevitable tumor cells residue by *** the tumor resection surgery in brain,addressing bleeding and superbug infections is also full of ***,no method or material in clinical craniotomy can simultaneously solve these three ***,Chitosan composite nanofibers embed-ded with CuSe nanoparticles were prepared by green electrospinning method,in which the CuSe nanoparticles have strong absorption in the second near-infrared(NIR-II)*** after removing the tumor in craniotomy,nanofibers were electrospun and deposited directly onto the resection site with high precision(>90%)to achieve rapid hemostasis(99%)and effectively induces cell apoptosis of residual tumor thereby to inhibit tumor *** using the same material,a tril-ogy of intracranial hemostasis,killing superbug and residual cancer cells is simultaneously *** short operation time reduces the risk of *** electrospinning strategy could combine with craniotomy and minimally invasive surgery,which may provide novel perspectives in clinical operation besides craniotomy.

关键词： Electrospinning Anti-tumor Anti-microbial Hemostasis

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Graphitic Carbon Quantum Dots Modified Nickel Cobalt Sulfide as Cathode materials for Alkaline Aqueous Batteries

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Nano-Micro Letters 2020年第2期12卷 1-18页

作者： Yirong Zhu Jingying Li Xiaoru Yun Ganggang Zhao Peng Ge Guoqiang Zou Yong Liu Hongshuai Hou Xiaobo Ji College of Metallurgy and Material Engineering Hunan University of TechnologyZhuzhou 412007People’s Republic of China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083People’s Republic of China state key Lab of Powder Metallurgy Central South UniversityChangsha 410083People’s Republic of China

Carbon quantum dots(CQDs)as a new class of emerging materials have gradually drawn researchers’concern in recent *** this work,the graphitic CQDs are prepared through a scalable approach,achieving a high yield with more than 50%.The obtained CQDs are further used as structure-directing and conductive agents to synthesize novel N,S-CQDs/NiCo2S4 composite cathode materials,manifesting the enhanced electrochemical properties resulted from the synergistic effect of highly conductive N,S-codoped CQDs offering fast electronic transport and unique micro-/nanostructured NiCo2S4 microspheres with Faradaic redox characteristic contributing large ***,the nitrogen-doped reduced graphene oxide(N-rGO)/Fe2O3 composite anode materials exhibit ultrahigh specific capacity as well as significantly improved rate property and cycle performance originating from the high-capacity prism-like Fe2O3 hexahedrons tightly wrapped by highly conductive N-rGO.A novel alkaline aqueous battery assembled by these materials displays a specific energy(50.2 Wh kg^−1),ultrahigh specific power(9.7 kW kg^−1)and excellent cycling performance with 91.5%of capacity retention at 3 A g^−1 for 5000 *** present research offers a valuable guidance for the exploitation of advanced energy storage devices by the rational design and selection of battery/capacitive composite materials.

关键词： Energy storage Alkaline aqueous batteries Carbon quantum dot Nickel cobalt sulfide

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Control of large linear magnetoelectricity in Co_(3)NiNb_(2)O_(9)

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Journal of Materiomics 2021年第4期7卷 810-814页

作者： Xiang Li Yu Wang Meifeng Liu Yunlong Xie Jiahua Min Xiyu Chen Jingwen Gong Leiyu Li Min Zeng Yiming Xu Yiru Wang Biwen Li Xiuzhang Wang Jun-Ming Liu Institute for advanced materials Hubei Normal UniversityHuangshi435002China Institute for advanced materials South China Normal UniversityGuangzhou510006China laboratory of Solid state Microstructures and Innovative Center of advanced Microstructures Nanjing UniversityNanjing210093China

Magnetoelectric(ME)materials have caught worldwide attentions owing to their potential technological applications in ME switching devices or high-density data ***,realizing a sufficiently strong ME effect in one single material is always the key ***,we systematically investigate the Co_(3)NiNb_(2)O_(9),including the characterization of its crystalline structure,magnetism,specific heat,and pyroelectric *** is revealed that Co_(3)NiNb_(2)O_(9) exhibits a remarkable ME response below the magnetic phase transition temperature of TN-32 *** one hand,the magnetic field-induced electric polarization is observed below TN while it is non-ferroelectric at no magnetic *** evaluated ME coefficient is as large as 21.2 ps/*** the other hand,the magnetization is significantly modulated by the applied electric field,with the inverse ME coefficient being 14.1 ps/*** observed ME responses suggest a stable ME mutual control by the magnetic or electric field in Co_(3)NiNb_(2)O_(9).

关键词： Co_(3)NiNb_(2)O_(9) Magnetoelectric effect Crystal structure

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Decorating CoSe2 hollow nanospheres on reduced graphene oxide as adlvanced sulfur host material for performance enhanced lithium-sulfur batteries

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Nano Research 2019年第11期12卷 2743-2748页

作者： Liang Chen Weiwei Yang Jianguo Liu Yong Zhou Hunan Collaborative Innovation Center of Environmental and Energy Photocatalysis Hunan Key Laboratory of Applied Ervirormental PhotocatalysisChangsha UniversiyChangsha 410022China Collaborative Innovation Center of advanced Microstructures National Laboratory of Solid State MicrotructuresCollege of Engineering and Aplied SciencesNanjing UniversityNanjing 210093China

Although lithium-sulfur batteries are one of promising rechargeable energy storage devices,their wide applications are impeded by the lithium polysulfides shutle effect,low electronic conductivity of the cathode,and sluggish redox reaction kinetics of lithium *** this work,reduced graphene oxide was decorated with CoSe2 hollow nanospheres to form an RGO-CoSe2 composite that was used as a host material to support S in the *** RGO-CoSe2 composite has the following superiorities:(1)enhanced electronic conductity,(2)accommodation of the volumetric change of cathode materials,(3)effective confinement of numerous lithium polysulfides species due to chemisorption,(4)expedition of the redox kinetics of lithium *** expected,the RGO-CoSez-based cathode exhibited the reversible specific capacity of 1,044.7 mAh/g at 0.2C and 695.7 mAh/g at 2C,together with ecellent cycling stability of 0.071% average capacity decay per cycle over 400 cycles at 1C.

关键词： cobalt selenide hollow nanospheres chemisorption lithium-sulfur batteries

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Recent progress on printable power supply devices and systems with nanomaterials

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Nano Research 2018年第6期11卷 3065-3087页

作者： Yuanjing Lin Yuan Gao Fang Fang Zhiyong Fan Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Hong Kong China Department of materials Science Fudan University Shanghai 200433 China

In recent years, tremendous research interest has been triggered in the fields of flexible, wearable and miniaturized power supply devices and self-powered energy sources, in which energy harvesting/conversion devices are integrated with energy storage devices into an infinitely self-powered energy system. As opposed to conventional fabrication methods, printing techniques hold promising potency for fabrication of power supply devices with practical scalability and versatility, especially for applications in wearable and portable electronics. To further enhance the performance of the as-fabricated devices, the utilization of nanomaterials is one of the promising strategies, owing to their unique properties. In this review, an overview on the progress of printable strategies to revolutionize the fabrication of power supply devices and integrated system with attractive form factors is provided. The advantages and limitations of the commonly adopted printing techniques for power supply device fabrication are first summarized. Thereafter, the research progress on novel developed printable energy harvesting and conversion devices, including solar cells, nanogenerators and biofuel cells, and the research advances on printable energy storage devices, namely, supercapacitors and rechargeable batteries, are presented, respectively. Although exciting advances on printable material modification, innovative fabrication methods and device performance improvement have been witnessed, there are still several challenges to be addressed to realize fully printable fabrication of integrated self-powered energy sources.

关键词： printing techniques energy conversion energy storage integrated self-powered system

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HIGH EPITAXIAL FERROELECTRIC RELAXOR Mn-DOPED Ba(Zr,Ti)O_(3) THIN FILMS ON MgO SUBSTRATES

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Journal of advanced Dielectrics 2011年第4期1卷 383-387页

作者： M.LIU J.LIU G.COLLINS C.R.MA C.L.CHEN A.D.ALEMAYEHU G.SUBRAMANYAM C.DAI Y.LIN J.HE J.C.JIANG E.I.MELETIS A.BHALLA Q.Y.ZHANG Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX 78249USA key Lab of materials Modification by Laser Ion Electron BeamsDalian University of Technology Dalian 116024P.R.China The Texas Center for Superconductivity University of Houston HoustonTX 77204USA Department of Electrical and Computer Engineering University of Dayton DaytonOhio 45469USA state key laboratory of Electronic Thin Films and Integrated devices University of Electronic Science and Technology of China Chengdu Sichuan 610054P.R.China Department of Material Science and Engineering University of Texas at Arlington Arlington TX 76019USA Department of Electrical and Computer Engineering University of Texas at San Antonio San Antonio TX 78249USA

Environment friendly ferroelectric relaxor Ba(Zr_(0.2)Ti_(0.8))O_(3)thin fims with the addition of 2%Mn dopant were grown on(001)MgO substrates by pulsed laser *** studies with X-ray di®raction and transmission electron microscopy reveal that the as-grown Ba(Zr_(0.2)Ti_(0.8))O_(3) thin films are c-axis oriented with an atomic sharp *** films have good single crystallinity and good epitaxial *** interface relationship was determined to be[100]***//[100]MgO and(001)***//(001)*** order/disorder relaxor structures were found with nano-columnar *** microwave dielectric measurements(15-18GHz)indicate that the¯lms have excellent dielectric properties with large dielectric constant value,high tunability,and low dielectric loss,promising the development of room temperature tunable microwave elements.

关键词： Ferroelectric relaxor thin films Ba(Zr_(0.2)Ti_(0.8))O_(3) dielectric microwave

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The Technology Evolution of Optical Integration in the Optical Active devices

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材料科学与工程（中英文版） 2010年第3期4卷 80-84页

作者： Hongchun Xu state key laboratory of Optical Communication Technologies and Networks Wuhan Telecommunication Devices Co. Ltd. Wuhan430074 China

Based on the analysis of application and development of optical integration technology in the optical active devices, this paper presents an overview on the basic optical integration platform such as SiOB (Silicon Optical Bench), PLC (Planar Lightwave Circuit), PIC (photonic Integration Circuit) as well as OEIC (Optical and Electronic Integration Circuit). Also, the evolution trend and the prospective development are demonstrated and in conclusion the OEIC hybrid integration of Ⅲ-Ⅴ and silicon would be the future way of the optical integration technology evolution.

关键词：光集成技术光有源器件演进可编程控制器光电集成集成平台平面光波电子集成

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