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CsPbI3 nanorods as the interfacial layer for high-performance,all-solution-processed self-powered photodetectors

Journal of Materials Science & Technology 2021年第16期75卷 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 Physics Key Laboratory of Advanced Optoelectronic Quantum Design and Measurement Ministry of Education Beijing Institute of Technology Kunming Institute of Physics Research Center for Materials Science Beijing Institute of Technology Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology

Heterojunction is regarded as a crucial step toward realizing high-performance devices, particularly,forming gradient energy band between heterojunctions benefits self-powered photodetectors. Therefore, in this paper, the synthesis of CsPbInanorods(NRs) and its application as the interfacial layer in high-performance, all-solution-processed self-powered photodetectors are presented. For 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 × 10Jones was obtained under 0.1 mW/cm~2 white light illumination at zero bias(i.***.in 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)/CsPbI(250 nm)/Au, in which the CsPbINRs layer works as the interfacial layer. As a result, a specific detectivity of 4.5 × 10Jones 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 air. The enhanced-performance is ascribed to the mismatch bandgap between PbS-TBAI/CsPbIinterface, which can suppress the carrier recombination and provide efficient transport passages for charge carriers. Thus, 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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Analysis on interfacial layer of aluminum alloy and non-coated stainless steel joint made by TIG welding-brazing

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China Welding 2009年第2期18卷 1-5页

作者：宋建岭林三宝杨春利马广超王寅杰 State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001

Dissimilar metals TIG welding-brazing of aluminum alloy and non-coated stainless steel was investigated. The resultant joint was characterized in order to identify the phases and the brittle intermetallic compounds （IMCs） in the interracial layer by optical metalloscope （OM）, scanning electron microscopy （SEM） and energy dispersive spectrometer （ EDS） , and the cracked joint was analyzed in order to understand the cracking mechanism of the joint. The results show that the microfusion of the stainless steel can improve the wetting and spreading of liquid aluminum base filler metal on the steel suuface and the melted steel accelerates the formation of mass of brittle IMCs in the interracial layer, which causes the joint cracking badly. The whole interfacial layer is 5 -7 μm thick and comprises approximately 5μm-thickness reaction layer in aluminum side and about 2 μm-thickness diffusion layer in steel side. The stable Al-rich IMCs are formed in the interfacial layer and the phases transfer from （ Al ＋ FeAl3 ） in aluminum side to （ FeAl3 ＋ Fe2Al5 ） and （ α-Fe ＋ FeAl） in steel side.

关键词： aluminum alloy stainless steel TIG welding-brazing interfacial layer intermetallic compound

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A Review on Interface Engineering of MXenes for Perovskite Solar Cells

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Nano-Micro Letters 2023年第8期15卷 270-308页

作者： Srikanta Palei G.Murali Choong‑Hee Kim Insik In Seul‑Yi Lee Soo‑Jin Park Department of Chemistry Inha University100 InharoIncheon 22212South Korea Department of Polymer Science and Engineering Department of IT‑Energy Convergence(BK21 Four)Chemical Industry InstituteKorea National University of TransportationChungju 27469South Korea

With an excellent power conversion efficiency of 25.7%,closer to the Shockley–Queisser limit,perovskite solar cells(PSCs)have become a strong candidate for a next-generation energy harvester.However,the lack of stability and reliability in PSCs remained challenging for commercialization.Strategies,such as interfacial and structural engineering,have a more critical influence on enhanced performance.MXenes,two-dimensional materials,have emerged as promising materials in solar cell applications due to their metallic electrical conductivity,high carrier mobility,excellent optical transparency,wide tunable work function,and superior mechanical properties.Owing to different choices of transition elements and surface-terminating functional groups,MXenes possess the feature of tuning the work function,which is an essential metric for band energy alignment between the absorber layer and the charge transport layers for charge carrier extraction and collection in PSCs.Furthermore,adopting MXenes to their respective components helps reduce the interfacial recombination resistance and provides smooth charge transfer paths,leading to enhanced conductivity and operational stability of PSCs.This review paper aims to provide an overview of the applications of MXenes as components,classified according to their roles as additives(into the perovskite absorber layer,charge transport layers,and electrodes)and themselves alone or as interfacial layers,and their significant importance in PSCs in terms of device performance and stability.Lastly,we discuss the present research status and future directions toward its use in PSCs.

关键词： MXenes Perovskite solar cells Additives interfacial layer Electrodes

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

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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 photodetectors.Therefore,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 presented.For 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(i.***.in 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 layer.As 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 air.The 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 carriers.Thus,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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Organic Optoelectronic Synapses for Sound Perception

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Nano-Micro Letters 2023年第9期15卷 31-40页

作者： Yanan Wei Youxing Liu Qijie Lin Tianhua Liu Song Wang Hao Chen Congqi Li Xiaobin Gu Xin Zhang Hui Huang College of Materials Science and Opto-Electronic Technology and Center of Materials Science and Optoelectronics Engineering CAS Center for Excellence in Topological Quantum ComputationCAS Key Laboratory of Vacuum PhysicUniversity of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China

The neuromorphic systems for sound perception is under highly demanding for the future bioinspired electronics and humanoid robots.However,the sound perception based on volume,tone and timbre remains unknown.Herein,organic optoelectronic synapses(OOSs)are constructed for unprecedented sound recognition.The volume,tone and timbre of sound can be regulated appropriately by the input signal of voltages,frequencies and light intensities of OOSs,according to the amplitude,frequency,and waveform of the sound.The quantitative relation between recognition factor(ζ)and postsynaptic current(I=I_(light)−I_(dark))is established to achieve sound perception.Interestingly,the bell sound for University of Chinese Academy of Sciences is recognized with an accuracy of 99.8%.The mechanism studies reveal that the impedance of the interfacial layers play a critical role in the synaptic performances.This contribution presents unprecedented artificial synapses for sound perception at hardware levels.

关键词： Organic optoelectronic synapse Sound perception Recognition factor Impedance spectroscopy interfacial layer

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Profiling interfacial reaction features between diamond and Cu-Sn-Ti active filler metal brazed at 1223 K

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Journal of Materials Science & Technology 2022年第36期131卷 100-105页

作者： Yonggang Fan Kenan Li Haodong Li Cong Wang Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) School of MetallurgyNortheastern UniversityShenyang 110819China State Key Laboratory of Superabrasives Zhengzhou Research Institute for Abrasives&Grinding Co.Ltd.Zhengzhou 450001China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Diamond/Cu-Sn-Ti composites have been successfully prepared by cold-press forming in conjunction with high-temperature vacuum active brazing at 1223 K.Ensuing wetting behaviors between diamond and filler metal,interfacial characteristics of the reaction layer,and wear resistance of the bulky composite have been fully investigated.It is revealed that all diamond particles can only be fully coated when the TiH_(2)content exceeds 5 wt%,below which sharp edges on diamond can still be observed.The interfacial reaction layer is found to be composed of TiC,the thickness of which is demonstrated to increase as a function of TiH_(2)content,arriving at the peak value of 1.70μm and remaining almost constant afterwards.It is further shown that the maximum wear resistance occurs approaching 5 wt%TiH_(2)content.Potential mechanisms responsible for such interesting phenomena have been postulated.

关键词： Diamond Cu-Sn-Ti Brazing interfacial layer Powder metallurgy

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Lithiophilic interface guided transient infiltration of molten lithium for stable 3D composite lithium anodes

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Nano Research 2023年第6期16卷 8297-8303页

作者： Lan-Xing Li Yun-Nuo Li Fei-Fei Cao Huan Ye College of Science Huazhong Agricultural UniversityWuhan 430070China

Fabricating three-dimensional(3D)composite lithium anodes via thermal infusion effectively addresses uncontrollable Li deposition and large volume changes.However,potential risks due to the long wetting time and high melting point remain a critical yet unconsidered issue.Herein,we report a stable 3D composite Li anode by infusing molten Li into a 3D scaffold within 3 s at 220℃.The key-enabling technique is the growth of a lithiophilic Mg-Al double oxide(LDO)nanosheet array layer on the scaffold.The in-situ formed lithiophilic alloy,combined with the capillary forces from the nanosheet arrays,enabled the transient infiltration of molten Li.In addition,the formed high ionic-conductivity Li phase can help construct a robust solid electrolyte interphase(SEI),stabilize the Li anode/electrolyte interface,and guide uniform Li deposition.The 3D composite anode exhibited a long cycling life of 1,000 h under a current density of 1 mA·cm^(−2)and over 1,600 h under a current density of 2 mA·cm^(−2)with a high areal capacity of 4 mAh·cm^(−2)in Li/Li symmetric cells.The 3D composite anodes paired with high areal capacity LiFePO_(4)(LFP)and S cathodes demonstrate its practical application feasibility.

关键词： lithium metal battery composite Li anode interfacial layer thermal infusion long cycling life

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Monolithic bilayered In_(2)O_(3) as an efficient interfacial material for high-performance perovskite solar cells

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Interdisciplinary Materials 2022年第4期1卷 526-536页

作者： Wanjia Tian Peiquan Song Yaping Zhao Lina Shen Kaikai Liu Lingfang Zheng Yujie Luo Chengbo Tian Liqiang Xie Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamenPeople's Republic of China

Carrier recombination at the buried SnO_(2)/perovskite interface limits the efficiency and stability of n-i-p-structured perovskite solar cells(PSCs).Herein,we report an In_(2)O_(3)interfacial layer with the distinctive structure of the monolithic compact/nanostructured bilayer.The partial hydrolysis nature of the In^(3+)ion enables the formation of nanorods on top of the compact In_(2)O_(3)layer when spin-coating the In(NO_(3))_(3) aqueous solution.This novel interfacial layer reduces the pinholes of the SnO_(2)film and increases the contact area between the perovskite and electron transport material.Therefore,PSCs with the incorporation of the interfacial layer demonstrate enhanced electron extraction and suppressed carrier recombination.Consequently,the champion device achieves a power conversion efficiency of 23.87%with a high fill factor of 82.14%.The optimized device also shows robust operational stability,retaining over 80%of the initial power conversion efficiency after working at the maximum power point for over 500 h under continuous one-sun illumination.

关键词： charge transfer indium oxide interfacial layer perovskite solar cells

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Simultaneous regulation of cations and anions in an electrolyte for high-capacity, high-stability aqueous zinc–vanadium batteries

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eScience 2022年第2期2卷 209-218页

作者： Ziqing Wang Miao Zhou Liping Qin Minghui Chen Zixian Chen Shan Guo Liangbing Wang Guozhao Fang Shuquan Liang School of Materials Science and Engineering Central South UniversityChangsha410083PR China College of Biological and Chemical Engineering Guangxi University of Science and TechnologyLiuzhou545006GuangxiPR China Department of Chemistry The University of Texas at AustinAustinTX78712USA School of Materials Science and Engineering Beijing Institute of TechnologyBeijing100081PR China Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South UniversityChangsha410083PR China

Safe,inexpensive aqueous zinc-ion batteries(AZIBs)are regarded as promising energy storage devices.However,they still face issues,including dissolution and collapse of the cathode as well as H_(2)evolution and the growth of Zn dendrites on the Zn anode.Herein,we simultaneously regulate the cations and anions in the electrolyte for high-capacity,high-stability aqueous zinc–vanadium(Zn–V)batteries based on a bimetallic cation-doped Na_(0.33)K_(0.1)V_(2)O_(5)·nH_(2)O cathode.We demonstrate that Na^(+) cations suppress cathode dissolution and restrain Zn dendrite growth on the anode via an electrostatic shield effect.We also illustrate that ClO_(4)^(-) anions participate in energy storage at the cathode and are reduced to Cl^(-),generating a protective layer on the Zn anode surface and providing a stable interface to decrease Zn dendrites and H_(2)evolution during long-term cycling.When Na^(+) and ClO_(4)^(-) are introduced into an aqueous ZnSO_(4) electrolyte,a Zn/Zn symmetric cell shows durable and reversible Zn stripping/plating for 1500 h at a current density of 1 mA cm^(-2) and with an area capacity of 1 mAh cm^(-2).Zn/Na_(0.33)K_(0.1)V_(2)O_(5)·nH_(2)O full batteries exhibit a high capacity of 600 mAh g^(-1)at 0.1 A g^(-1) and long-term cycling performance for 5000 cycles,with a capacity of 200 mAh g^(-1) at 20 Ag^(-1).

关键词： Vanadium-based cathode Electrolyte additives High capacity interfacial layer Zinc-ion batteries

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Interface models for thin interfacial layers

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Applied Mathematics and Mechanics(English Edition) 2016年第6期37卷 707-724页

作者： Xiaojing CAI Jinquan XU School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong University

There have already been several interface models for the analyses of thin interfacial layers in bonded materials. To distinguish their corresponding advantages or limitations, a comparative study is carried out, and a new constitutive-based interface model is proposed. Through numerical examinations, the limitations of typical models are clarified. It is found that the new interface model is an efficient and accurate model, by which both the traction and the displacement jumps across the modelled interface with the thickness of zero are allowed, and the stresses within the interracial layer can also be analyzed.

关键词： bonding interface model interfacial layer

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