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Quasi-One-Dimensional van der Waals Transition Metal Trichalcogenides

Research 2023年第4期2023卷 219-243页

作者： Mengdi Chen Lei Li Manzhang Xu Weiwei Li Lu Zheng Xuewen Wang Frontiers Science Center for flexible electronics(FSCFE)&Shaanxi institute of flexible electronics(sife) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China Shaanxi Key Laboratory of flexible electronics(KLoFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China MIIT Key Laboratory of flexible electronics(KLoFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an710072China Key Laboratory of flexible electronics of Zhejiang Provience Ningbo Institute of Northwestern Polytechnical University218 Qingyi RoadNingbo 315103China.

The transition metal trichalcogenides(TMTCs)are quasi-one-dimensional(1D)MX_(3)-type van der Waals layered semiconductors,where M is a transition metal element of groups IV and V,and X indicates chalcogen *** to the unique quasi-1D crystalline structures,they possess several novel electrical properties such as variable bandgaps,charge density waves,and superconductivity,and highly anisotropic optical,thermoelectric,and magnetic *** study of TMTCs plays an essential role in the 1D quantum materials field,enabling new opportunities in the material research ***,tremendous progress in both materials and solid-state devices has been made,demonstrating promising applications in the realization of nanoelectronic *** review provides a comprehensive overview to survey the state of the art in materials,devices,and applications based on ***,the symbolic structure,current primary synthesis methods,and physical properties of TMTCs have been ***,examples of TMTC applications in various fields are presented,such as photodetectors,energy storage devices,catalysts,and ***,we give an overview of the opportunities and future perspectives for the research of TMTCs,as well as the challenges in both basic research and practical applications.

关键词： Transition realization crystalline

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Solution processed nano-ZnMgO interfacial layer for highly efficient inverted perovskite solar cells

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Journal of Energy Chemistry 2019年第1期28卷 107-110页

作者： Ze Wang Yingdong Xia Lingfeng Chao Yufeng Pan Meijin Li Renzhi Li Bin Du Yonghua Chen Wei Huang Key Laboratory of flexible electronics (KLOFE) & Institution of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NJTECH) Shaanxi institute of flexible electronics (sife) Northwestern Polytechnical University (NPU) Key Laboratory for Organic electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications

Interfacial layer has a significant impact on the achievement of highly efficient organic–inorganic hybrid perovskite solar cells(PSCs). Here, we introduced a nano-ZnMgO(magnesium doped ZnO, abbreviated as ZnMgO) as interfacial layer between [6, 6]-Phenyl C_(61) butyric acid methyl ester(PC_(61) BM) layer and Al electrode to replace LiF or ZnO interlayer and enhance device performance. The device efficiency has been improved from 11.43% to 15.61% and the hysteresis was decreased dramatically. Such huge enhancement of power convert efficiency(PCE) can be attributed to the low dark current density, enhancement of electron-selective contact, and low energy barrier at the PC_(61) BM/Al interface. We suggest that this simple nano-scale interlayer can provide an efficient charge transport and extraction for highly efficient PSCs.

关键词： Nano-ZnMgO Interfacial layer High efficiency Perovskite solar cells

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Matrix Effect on Polydiarylfluorenes Electrospun Hybrid Microfibers: From Morphology Tuning to High Explosive Detection Efficiency

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Chinese Journal of Polymer Science 2023年第7期41卷 1011-1017页

作者： Wei Xue Man Xu Chuan-Xin Wei Hua-Min Sun Li-Li Sun Sheng-Jie Wang Jin-Yi Lin Nai-En Shi Ling-Hai Xie Wei Huang State Key Laboratory of Organic electronics and Information Displays&institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing210023China Center for Supramolecular Optoelectronics(CSO) Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing211816China Frontiers Science Center for flexible electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)Xi’an710072China

Precisely optimizing the morphology of functional hybrid polymeric systems is crucial to improve its photophysical property and further extend their optoelectronic applications. The physic-chemical property of polymeric matrix in electrospinning (ES) processing is a key factor to dominate the condensed structure of these hybrid microstructures and further improve its functionality. Herein, we set a flexible poly(ethylene oxide) (PEO) as the matrix to obtain a series of polydiarylfluorenes (including PHDPF, PODPF and PNDPF) electrospun hybrid microfibers with a robust deep-blue emission. Significantly different from the rough morphology of their poly(N-vinylcarbazole) (PVK) ES hybrid fibers, polydiarylfluorenes/PEO ES fibers showed a smooth morphology and small size with a diameter of 1∼2 µm. Besides, there is a relatively weak phase separation under rapid solvent evaporation during the ES processing, associated with the hydrogen-bonded-assisted network of PEO in ES fibers. These relative “homogeneous” ES fibers present efficient deep-blue emission (PLQY>50%), due to weak interchain aggregation. More interestingly, low fraction of planar (β) conformation appears in the uniform PODPF/PEO ES fibers, induced by the external traction force in ES processing. Meanwhile, PNDPF/PEO ES fibers present a highest sensitivity than those of other ES fibers, associated with the smallest diameter and large surface area. Finally, compared to PODPF/PVK fibers and PODPF/PEO amorphous ES fibers, PODPF/PEO ES fibers obtained from DCE solution exhibit an excellent quenching behavior toward a saturated DNT vapor, mainly due to the synergistic effect of small size, weak separation, β-conformation formation and high deep-blue emission efficiency.

关键词： Matrix effect Electrospun fibers Polydiarylfluorenes Planar conformation Explosive detection

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Approaching Superior Potassium Storage of Carbonaceous Anode Through a Combined Strategy of Carbon Hybridization and Sulfur Doping

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Energy & Environmental Materials 2022年第3期5卷 944-953页

作者： Qianqian Yao Yanmei Gan Zuju Ma Xiangying Qian Suzhi Cai Yi Zhao Lunhui Guan Wei Huang Fujian Cross strait institute of flexible electronics(Future Technologies) Fujian Normal UniversityFuzhou 350117China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350108China School of Environmental and Materials Engineering Yantai UniversityYantai 264005China Shaanxi instituteofflexibleelectronics(sife) NorthwesternPolytechnical University(NPU)Xi’an 710072China Key Laboratory of flexible electronics(KLOFE)&institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211800China

Carbonaceous materials are promising anode candidates for potassium-ion batteries(PIBs)given its high conductivity,stable property,and abundant resource,while its practical implementation is still hampered by its limited capacity and inferior rate ***,we report a superior carbonaceous anode through a combined strategy of carbon hybridization and heteroatom *** this composite,hollow carbon spindles(HCS)were anchored on the surface of graphene(G)followed with sulfur doping treatment,aiming to integrate the high conductivity of graphene,the good structure stability of HCS,and the S doping-induced ample active *** a PIB anode,the S-G@HCS composite can display high capacity(301 mAh g^(-1)at 0.1 A g^(-1)after 500 cycles)and long-term cyclability up to 1800 cycles at 2 A g^(-1).Impressively,it can deliver an outstanding rate capacity of 215 mAh g^(-1)at 10 A g^(-1),which is superior to most carbon anodes as-reported so far for *** and theoretical analysis manifests that the construction of graphene/amorphous carbon interface as well as S doping enables the regulation of electronic structure and ion adsorption/transportation properties of carbonaceous material,thus accounting for the high capacity and superior rate capability of S-G@HCS composite.

关键词： carbonaceous anode graphene hollow carbon spindles potassium-ion batteries sulfur doping

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Molecular engineering on all ortho-linked carbazole/oxadiazole hybrids toward highly-efficient thermally activated delayed fluorescence materials in OLEDs

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Chinese Chemical Letters 2019年第11期30卷 1955-1958页

作者： Wenbo Yuan Hannan Yang Mucan Zhang Die Hu Shigang Wan Zijing Li Changsheng Shi Ning Sun Youtian Tao Wei Huang Key Lab for flexible electronics&institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing 211816China Department of Physics Center for Optoelectronics Engineering ResearchYunnan UniversityKunming 650091China Shaanxi institute of flexible electronics(sife) North western Polytechnical University(NPU)Xi'an 710072China

The highest efficiency thermally activated delayed fluorescence(TADF)emitters in OLEDs are mostly based on twisted donor/acceptor(D/A)type organic ***,we report the rational molecular design on twisted all ortho-linked carbazole/oxadiazole(Cz/OXD)hybrids with tunable D-A interactions by adjusting the numbers of donor/acceptor units and electron-donating ***-triplet energy bandgaps(ΔEST)are facilely tuned from^0.4,0.15 to^0 eV in D-A,D-A-D to A-D-A type *** variation correlates well with triplet-excited-state frontier orbital spatial separation *** feature with solid state photoluminescence quantum yield(PLQY)<10%is observed in D-A type 2CzOXD and D-A-D type *** to the extremely lowΔEST for efficient reverse intersystem crossing,strong TADF with PLQY of 71%-92%is achieved in A-D-A type 4CzDOXD and *** external quantum efficiency from 19.4%to 22.6%is achieved in A-D-A typed 4CzDOXD and 4tCzDOXD.

关键词： Oxadiazole Carbazole Donor-acceptor Organic light-emitting diodes Thermally activated delayed fluorescence

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Electrospun Supramolecular Hybrid Microfibers from Conjugated Polymers:Color Transformation and Conductivity Evolution

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Chinese Journal of Polymer Science 2021年第7期39卷 824-830页

作者： Wei Xue Man Xu Meng-Na Yu Hua-Min Sun Jin-Yi Lin Rong-Cui Jiang Ling-Hai Xie Nai-En Shi Wei Huanga Center for Molecular Systems and Organic Devices(CMSOD) Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China Center for Supramolecular Optoelectronics(CSO) Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816China Frontiers Science Center for flexible electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)Xi'an 710072China

A type of novel electrospun supramolecular hybrid microfibers comprising poly(9-(4-(octyloxy)-phenyl)-2,7-fluoren-9-ol)(PPFOH)and poly(A/-vinylcarbazole)(PVK)are successfully prepared for intriguing multi-color emission *** supramolecular tunable PPFOH aggregation in PVK matrix endows the complex with a smart energy transfer behavior to obtain the multi-color *** stark contrast to PVK fibers,the emission color of PPFOH/PVK fibers with an efficient dispersion of PPFOH fluorophores at a proper dope ratio can be tuned in a wide spectrum of blue(0.1%),sky blue(0.5%),nearly white(1%),cyan(2%),green(5%)and yellow(10%).Besides,conductive behaviors of the microfiber were demonstrated in accompany with the increment of the doping ratio of PPFOH to *** fabrication of polymer light-emitting diode(PLED)based on the blended electrospun fiber provided a further evidence of its excellent electrical property for potential applications in optoelectronic devices.

关键词： Supramolecular approach Electrospinningπ-conjugated fibers Multi-color emissions Conductivity Polymer light-emitting diodes

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A memristive-photoconductive transduction methodology for accurately nondestructive memory readout

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Light(Science & Applications) 2024年第9期13卷 1801-1808页

作者： Zhe Zhou Yueyue Wu Keyuan Pan Duoyi Zhu Zifan Li Shiqi Yan Qian Xin Qiye Wang Xinkai Qian Fei Xiu Wei Huang Juqing Liu Key Laboratory of flexible electronics(KLOFE)&institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)30 South Puzhu RoadNanjing 211816China Shandong Technology Center of Nanodevices and Integration School of MicroelectronicsShandong UniversityJinan 250100China Shaanxi institute of flexible electronics(sife) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an 710072China

Crossbar resistive memory architectures enable high-capacity storage and neuromorphic computing,accurate retrieval of the stored information is a prerequisite during read ***,conventional electrical readout normally suffer from complicated process,inaccurate and destructive reading due to crosstalk effect from sneak path *** we report a memristive-photoconductive transduction(MPT)methodology for precise and nondestructive readout in a memristive crossbar *** individual devices present dynamic filament form/fuse for resistance modulation under electric stimulation,which leads to photogenerated carrier transport for tunable photoconductive response under subsequently light pulse *** coherent signal transduction can be used to directly detect the memorized on/off states stored in each cell,and a prototype 4*4 crossbar memories has been constructed and validated for the fidelity of crosstalk-free readout in recall process.

关键词： crosstalk precise enable

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Stimuli-responsive photofunctional materials for green and security printing

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InfoMat 2021年第1期3卷 82-100页

作者： Yun Ma Yaxin Yu Jiangang Li Shujuan Liu Wei Huang Qiang Zhao Key Laboratory for Organic electronics and Information Displays and Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts and Telecommunications(NUPT)NanjingChina Frontiers Science Center for flexible electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)and Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)Xi'anChina

Information recording on paper has always been the most important approach to keep records of human activity and to spread *** the progress of science and technology,paper with different functions should be exploited to conform to the increasing demands in various *** one aspect,traditional paper can only be used once,and using large amounts of paper causes deforestation,additional solid waste treatment,environmental pollution,and high energy ***,the development of rewritable paper that is environment-friendly,low cost,and can save resources is significant for green *** the other aspect,information leakage brings security issues,which may lead to severe consequences,such as war outbreak,economic loss,social problems,and so ***,the development of security printing has also attracted wide ***-responsive photofunctional materials that have reversible variations in absorption or emission in response to changes in the external environmental have a great potential for the achievement of green and security *** date,much progress has been made in these research *** paper lists different smart materials that respond to various external stimuli,such as light,water,pH,heat,and metal ions,and summarizes the recent advances towards green and security ***,we discuss the current challenges and future directions in this rapidly growing research *** is expected that this review article will stimulate and guide future studies for the advanced green and security printing.

关键词： green printing rewritable paper security printing stimuli-responsive photofunctional materials

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Halogen bonding in the co-crystallization of potentially ditopic diiodotetrafluorobenzene:a powerful tool for constructing multicomponent supramolecular assemblies

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National Science Review 2020年第12期7卷 1906-1932页

作者： Xue-Hua Ding Yong-Zheng Chang Chang-Jin Ou Jin-Yi Lin Ling-Hai Xie Wei Huang Key Laboratory of flexible electronics(KLOFE) & institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University(Nanjing Tech) Key Laboratory for Organic electronics &Information Displays(KLOEID) and institute of Advanced Materials (IAM) Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts & Telecommunications(NUPT) Shaanxi institute of flexible electronics(sife) Northwestern Polytechnical University (NPU)

Halogen bonding is emerging as a significant driving force for supramolecular self-assembly and has aroused great interest during the last two *** the various halogen-bonding donors,we take notice of the ability of 1,4-diiodotetrafluorobenzene(1,4-DITFB) to co-crystallize with diverse halogen-bonding acceptors in the range from neutral Lewis bases(nitrogen-containing compounds,N-oxides,chalcogenides,aromatic hydrocarbons and organometallic complexes) to anions(halide ions,thio/selenocyanate ions and tetrahedral oxyanions),leading to a great variety of supramolecular architectures such as discrete assemblies,1 D infinite chains and 2 D/3 D *** of them act as promising functional materials(***,phosphorescence,optical waveguide,laser,non-linear optics,dielectric and magnetism)and soft materials(*** crystal and supramolecular gel).Here we focus on the supramolecular structures of multicomponent complexes and their related physicochemical properties,highlight representative examples and show clearly the main directions that remain to be developed and improved in this *** the point of view of crystal engineering and supramolecular chemistry,the complexes summarized here should give helpful information for further design and investigation of the elusive category of halogen-bonding supramolecular functional materials.

关键词： halogen bond co-crystal physicochemical properties supramolecular chemistry crystal engineering

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Ultrafast photoexcitation dynamics behavior of hydrogen-bonded polyfluorenol

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Chinese Chemical Letters 2024年第1期35卷 486-491页

作者： Man Xu Chuanxin Wei Yunlong Zhang Hao Li Jingyao Ma Jinyi Lin Shengjie Wang Wei Xue Qi Wei Linghai Xie Wei Huang State Key Laboratory of Organic electronics and Information Displays&School of Chemistry and Life Sciences&institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Key Laboratory of flexible electronics(KLOFE)&institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China Frontiers Science Center for flexible electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical UniversityXi’an 710072China

Exciton behavior is crucial to the exploitation of light-emitting conjugated polymer(LCPs)for optoelectronic *** excitons are easily trapped by the intrinsically defect ***,we set a polyfluorenol(PPFOH)as an example to systematically investigate its photophysical behavior to check the role of defect structures in *** to time-resolved photoluminescence analysis,the feature emission peaks from individual chain of PPFOH in diluted DMF solution is effectively avoided the influence of fluorenone formation,but the residual green-band emission at 550nm is easily observed in the PL spectra of PPFOH dilute toluene solution obtained delay 1.5 ns,confirmed the formation of“guest”physical aggregation-induced defect ***,efficient and ultrafast energy transfer from individual chain to defect structure is observed in PPFOH ***,the efficient energy transfer happened for the film obtained from DMF solution(200 ps)than those of toluene ones(600 ps).Meanwhile,compared to relatively stable green-band emission in PPFOH film from toluene solution,red-shifted emission peak(11 nm)of PPFOH film from DMF solutions exposed to saturated DNT vapor also confirmed their different aggregation-induced green-band ***,this aggregation defect structures are influenced on the photophysical property of LCPs in solid states.

关键词： Photoexcitation dynamics Polyfluorenol Aggregation behavior Energy transfer Exciton migration

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