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Recent status and future perspectives of ZnIn_(2)S_(4) for energy conversion and environmental remediation

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Chinese Chemical Letters 2023年第7期34卷 45-57页

作者： Mengzhu Li Longlu Wang Xinyu Zhang Weinan Yin Yingbo Zhang Jingwen Li Ziyang Yin Yuntao Cai Shujuan Liu Qiang Zhao College of Electronic and optical Engineering and College of Flexible Electronics(Future Technology).Nanjing University of Posts and Telecommunications(NUPT) Nanjing 210023China State Key laboratory of Organic Electronics and Information Displays and Jiangsu Key laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Geographic and Biologic Information Nanjing University of Posts and TelecommunicationsNanjing 210023China

Zinc indium sulfide (ZnIn_(2)S_(4)),a novel photocatalyst,has attracted considerable attention and been extensively studied over the past few years owing to its various advantages such as nontoxicity,structural stability,easy availability,suitable band gap and fascinating photocatalytic activity.This review mainly focuses on the recent state-of-art progress of ZnIn_(2)S_(4)-based photocatalysts.First,we briefly introduced preparation methods of ZnIn_(2)S_(4) with diverse morphological structures.Then,considering the photocatalytic activity of pristine ZnIn_(2)S_(4) would be confined by rapid recombination of photo-generated electronhole pairs and limited light absorption range,different modulation strategies such as layer and size control,doping,vacancy engineering and hetero-nanostructures were expounded in detail.Afterwards,the applications of ZnIn_(2)S_(4) in various fields such as H_(2) production,CO_(2) reduction,value-added products synthesis,pollutant purification and N_(2) fixation are clearly summarized.In the end,we sorted out the conclusions and outlook,aiming to provide some new insights for this fascinating material.

关键词： ZnIn_(2)S_(4) Photocatalysis Energy conversion Environmental remediation Hydrogen evolution

Defects inducing anomalous exciton kinetics in monolayer WS_(2)

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Nano Research 2022年第2期15卷 1616-1622页

作者： Zhe Li Yan Zeng Zhenwei Ou Tianzhu Zhang Rongguang Du Ke Wu Quanbing Guo Wei Jiang Yuhao Xu Tao Li Tai Min Ti Wang Hongxing Xu School of Physics and Technology Center for Nanoscience and Nanotechnologyand Key Laboratory of Artificial Micro-and Nanostructures of Ministry of EducationWuhan UniversityWuhan 430072China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060China Center for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXian Jiaotong UniversityXian 710049China

Two-dimensional(2D)transition metal dichalcogenide(TMD)has emerged as an effective optoelectronics material due to its novel optical properties.Understanding the role of defects in exciton kinetics is crucial for achieving high-efficiency TMD devices.Here,we observe defects induced anomalous power dependence exciton dynamics and spatial distribution in hexagonal heterogeneous WS_(2).With transient absorption microscopy study,we illustrate that these phenomena originate from the competition between radiative and defect-related non-radiative decays.To understand the physics behind this,a decay model is introduced with two defect-related channels,which demonstrates that more excitons decay through non-radiative channels in the dark region than the bright region.Our work reveals the mechanisms of anomalous exciton kinetics by defects and is instrumental for understanding and exploiting excitonic states in emerging 2D semiconductors.

关键词： transition metal dichalcogenides defect exciton dynamics transient absorption microscopy

One-step synthesis of organic microwire-disk interconnected structure for miniaturized channel filters

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Chinese Chemical Letters 2017年第3期28卷 563-568页

作者： Qiu-Hong Cui Lan Peng Zhi-Dong Lou Yu-Feng Hu Feng Teng Key laboratory of Luminescence and optical Information Ministry of Education School of Science Beijing Jiaotong University Beijing 100044 China

Miniaturized channel filters are in high demand for many applications such as photonic integrated circuits, information-based technology, and platforms for investigation of light–matter interactions.Recently, several photonic schemes have been proposed to achieve nanofilters, which require sophisticated growth techniques. Here, we have fabricated microdisk whispering-gallery-mode（WGM） resonators through controlled assembly of organic materials with an emulsion-solventevaporation method. Based on this emulsion assembly method, the diameters of microdisks can be easily controlled, and more importantly, a microwire-disk interconnected structure is able to be constructed via one-step assembly. This microwire-waveguide-connected microdisk heterostructure can be utilized as a channel drop filter. Our results have demonstrated a facile way to achieve flexible WGM-based photonic components which can be integrated with other functional devices.

关键词： Self-assembly Organic nanostructures WGM resonators Heterostructures Channel drop filters

Electron transition manipulation under graphene-mediated plasmonic engineering nanostructure

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Nano Research 2023年第4期16卷 5376-5382页

作者： Huaizhou Jin Jing-Yu Wang Xia-Guang Zhang Weiyi Lin Weiwei Cai Yue-Jiao Zhang Zhi-Lin Yang Fan-Li Zhang Jian-Feng Li College of optical and Electronic Technology China Jiliang UniversityHangzhou 310018China State Key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringCollege of EnergySchool of Electronic Science and EngineeringDepartment of PhysicsXiamen UniversityXiamen 361005China Country Key laboratory of Green Chemical Media and Reactions Ministry of EducationCollaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China

Monolayer graphene has attracted enormous attention owing to its unique electronic and optical properties.However,achieving an effective approach without applying electrical bias for manipulating the charge transfer based on graphene is elusive to date.Herein,we realized the manipulation of excitons’transition from emitter to the graphene surface with plasmonic engineering nanostructures and firstly obtained large enhancements for photon emission on the graphene surface.The localized plasmons generated from the plasmonic nanostructures of shell-isolated nanoparticle coupling to ultra-flat Au substrate would dictate a consistent junction geometry while enhancing the optical field and dominating the electron transition pathways,which may cause obvious perturbations for molecular radiation behaviors.Additionally,the three-dimensional finite-difference time-domain and time-dependent density functional theory were also carried out to simulate the distributions of electromagnetic field and energy levels of hybrid nanostructure respectively and the results agreed well with the experimental data.Therefore,this work paves a novel approach for tunning graphene charge/energy transfer processes,which may hold great potential for applications in photonic devices based on graphene.

关键词： plasmonic nanocavity shell-core isolated nanoparticles electron transition monolayer graphene fluorescence quenching

Maillard reaction-derived laser lithography for printing functional inorganics

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Science China Chemistry 2022年第7期65卷 1306-1314页

作者： Xiao Dai Yining Jiang Xiaohan Wang Fengnan Chen Liang Gao Xiaofeng Li Guifu Zou School of Energy School of Optoelectronic Science and EngineeringKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006China School of optical and Electronic Information Suzhou City UniversitySuzhou 215104China Research Institute of Superconductor Electronics College of Engineering and Applied ScienceNanjing UniversityNanjing 210023China

Photopolymerization-based additive printing of functional inorganics has drawn great attention in recent years and one important challenge is the photoresin loading with diverse inorganics. Here, we introduce a Maillard reaction-derived laser lithography strategy for an unprecedented direct printing of diverse inorganic compounds. The sugar-assisted laser lithography(SLL) is powerful to carry choice metal ions and versatile for the generation of patterned inorganic materials comprising metal oxides,metal sulfides, and metal nitrides, characterized by ferroelectric, magnetic, semiconductivity, superconductivity, or other properties. The material architecture is flexibly manipulated by the laser intensity, power, printing speed, precursor solution, and computer-aided design to satisfy the practical requirements. This work demonstrates a new possibility for the further development of laser lithography in the directly printing of feature-rich inorganic materials and devices.

关键词： functional inorganics inorganic nanomaterials printing nanostructures

Bidirectionally tunable all-optical switch based on multiple nano-structured resonators using backward quasi-phase-matching

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Chinese Optics Letters 2011年第4期9卷 83-86页

作者：谢俊陈玉萍陆闻杰陈险峰 Department of Physics State Key Laboratory on Fiber-Optic Local Area Network and Advanced Optical Communication SystemsShanghai Jiaotong University

Based on the second-order nonlinearity, we present a bidirectional tunable all-optical switch at C-band by introducing backward quasi-phase-matching technique in Mg-doped periodically poled lithium niobate （MgO：PPLN） waveguide with a nano-structure called multiple resonators. Two injecting forward lights and one backward propagating light interact with difference frequency generations. The transmission of forward signal and backward idler light can be modulated simultaneously with the variation of control light power based on the basic ＂phase shift＂ structure of a single resonator. In this scheme, all the results come from our simulation. The speed of this bidirectional optical switch can reach to femtosecond if a femtosecond laser is used as the control light.

关键词： Lithium nanostructures Niobium compounds Phase matching Resonators

Synthesis,structure,and optical properties of manganese phthalocyanine thin films and nanostructures

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Progress in Natural Science:Materials International 2017年第3期27卷 329-332页

作者： Lu Meng Kai Wang Yuyan Han Yi Yao Pin Gao Chao Huang Wenhua Zhang Faqiang Xu National Synchrotron Radiation laboratory University of Science and Technology of China High Magnetic Field laboratory Chinese Academy of Sciences

Manganese phthalocyanine(MnPc) nanostructures with different morphologies were prepared on porous anodic alumina oxide(AAO) at different substrate temperature(TS=50 ℃,80 ℃,120 ℃,180 ℃,240 ℃) in an organic molecular beam deposition(OMBD) system.The nanostructures morphologies were studied using scanning electron microscopy(SEM) and the results showed that the nanostructures morphologies could be modulated by the control of TS,as a result,the continuous film was obtained at 50 ℃,whereas the nanorods(NRs),nanoribbons(NBs),nanowires(NWs),nanosheets(NSs) and nanoparticles(NPs) were facilely generated as TSincreased.At the same time,the density and the uniformity of the nanostructures decreased.The results of X-ray diffraction(XRD) indicated that only the(3-phase polymorph formed throughout the growth process irrelevant to the TS.Additionally,the ultraviolet visible(UV-Vis) absorption spectra demonstrated that the main absorption bands of MnPc nanostructures showed a remarkable band broadening as the TSwas increased.

关键词： MnPc Nanostructure OMBD Substrate temperature optical property

Azimuthal vector beam illuminating plasmonic tips circular cluster for surface-enhanced Raman spectroscopy

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Chinese Optics Letters 2023年第3期21卷 152-156页

作者：张录孟超杨灏张文定 Key laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an 710129China

Noble metallic nanostructures with strong electric near-field enhancement can significantly improve nanoscale light-matter interactions and are critical for high-sensitivity surface-enhanced Raman spectroscopy[SERS].Here,we use an azimuthal vector beam[AVB]to illuminate the plasmonic tips circular cluster[PTCC]array to enhance the electric near-field intensity of the PTCC array,and then use it to improve SERS sensitivity.The PTCC array was prepared based on the self-assembled and inductive coupled plasmon[ICP]etching methods.The calculation results show that,compared with the linearly polarized beam[LPB]and radial vector beam excitations,the AVB excitation can obtain stronger electric near-field enhancement due to the strong resonant responses formed in the nanogap between adjacent plasmonic tips.Subsequently,our experimental results proved that AVB excitation increased SERS sensitivity to 10-13mol/L,which is two orders of magnitude higher than that of LPB excitation.Meanwhile,the PTCC array had excellent uniformity with the Raman enhancement factor calculated to be~2.4×10^[8].This kind of vector light field enhancing Raman spectroscopy may be applied in the field of sensing technologies,such as the trace amount detection.

关键词： surface-enhanced Raman spectroscopy plasmonic tips circular cluster array azimuthal vector beam surface plasmon polaritons

Plasmonic metalens for nanofabrication

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National Science Review 2018年第2期5卷 137-138页

作者： Xiangang Luo State Key laboratory of optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and Electronics Chinese Academy of Sciences

INTRODUCTION optical lithography is the primary tool for the fabrication of micro/nanostructures in micro-electronic and opto-electronic applications,which has fueled the explosive growth of the semiconductor industry... 详细信息

关键词： NANOLITHOGRAPHY LENS