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High-performance polarization-sensitive photodetectors on two-dimensional β-InSe

National Science Review 2022年第5期9卷 30-36页

作者： Zhinan Guo Rui Cao Huide Wang Xi Zhang Fanxu Meng Xue Chen Siyan Gao David K.Sang Thi Huong Nguyen Anh Tuan Duong Jinlai Zhao Yu-Jia Zeng Sunglae Cho Bing Zhao Ping-Heng Tan Han Zhang Dianyuan Fan institute of microscale optoelectronics International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology College of Physics and Optoelectronic EngineeringShenzhen University institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of MicroNano Optomechatronics EngineeringShenzhen University State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences Department of Physics and Energy Harvest-Storage Research Center University of Ulsan State Key Laboratory of Supramolecular Structure and Materials Jilin University

Two-dimensional(2D) indium selenide(InSe) has been widely studied for application in transistors and photodetectors,which benefit from its excellent optoelectronic *** the three specific polytypes(γ-,ε-and β-phase) of InSe,only the crystal lattice of InSe in β-phase(β-InSe) belongs to a non-symmetry point group of D6 h~4,which indicates stronger anisotropic transport behavior and potential in the polarized photodetection of β-InSe-based optoelectronic ***,we prepare the stable p-type 2D-layered β-InSe via temperature gradient *** anisotropic Raman,transport and photoresponse properties of β-InSe have been experimentally and theoretically proven,showing that theβ-InSe-based device has a ratio of 3.76 for the maximum to minimum dark current at two orthogonal orientations and a high photocurrent anisotropic ratio of 0.70 at 1 V bias voltage,*** appealing anisotropic properties demonstrated in this work clearly identify β-InSe as a competitive candidate for filter-free polarization-sensitive photodetectors.

关键词： 2D materials polarization photodetectors β-InSe Raman spectra

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Shock-induced energy localization and reaction growth considering chemical-inclusions effects for crystalline explosives

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Defence Technology（防务技术） 2024年第3期33卷 278-294页

作者： Ruqin Liu Yanqing Wu Xinjie Wang Fenglei Huang Xiaona Huang Yushi Wen State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China School of Power and Mechanical Engineering Wuhan UniversityWuhan430072HubeiChina institute of Chemical Materials China Academy of Engineering Physics(CAEP)Mianyang621999SichuanChina

Chemical inclusions significantly alter shock responses of crystalline explosives in macroscale gap experiments but their microscale dynamics origin remains *** shock-induced energy localization,overall physical responses,and reactions in a-1,3,5-trinitro-1,3,5-triazinane(a-RDX)crystal entrained various chemical inclusions were investigated by the multi-scale shock technique implemented in the reactive molecular dynamics *** indicated that energy localization and shock reaction were affected by the intrinsic factors within chemical inclusions,i.e.,phase states,chemical compositions,and *** atomic origin of chemical-inclusions effects on energy localization is dependent on the dynamics mechanism of interfacial molecules with free space volume,which includes homogeneous intermolecular compression,interfacial impact and shear,and void collapse and *** introducing various chemical inclusions,the initiation of those dynamics mechanisms triggers diverse decay rates of bulk RDX molecules and hereby impacts on growth speeds of final *** chemical inclusions can reduce the effectiveness of the void during the shock *** the shockwave velocity of 9 km/s,the parent RDX decay rate in RDX entrained amorphous carbon decreases the most and is about one fourth of that in RDX with a vacuum void,and solid HMX and TATB inclusions are more reactive than amorphous carbon but less reactive than dry air or acetone *** lessdense shocking system denotes the greater increases in local temperature and stress,the faster energy liberation,and the earlier final reaction into equilibrium,revealing more pronounced responses to the present intense *** quantitative models associated with the relative system density(RD_(sys))were proposed for indicating energy-localization mechanisms and evaluating initiation safety in the shocked crystalline ***_(sys)is defined by the density ratio of defective RDX to perfec

关键词： Shock responses Energy localization Crystalline explosives Chemical inclusions Reactive molecular dynamics

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Recent Advances on Porous Materials for Synergetic Adsorption and Photocatalysis

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Energy & Environmental Materials 2022年第3期5卷 711-730页

作者： Tianqi Wang Bingbing Tian Bin Han Dingren Ma Mingzhe Sun Aamir Hanif Dehua Xia Jin Shang International Collaborative Laboratory of 2D Materials for optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China School of Energy and Environment City University of Hong KongTat Chee AvenueKowloonHong Kong China institute of microscale optoelectronics Shenzhen UniversityShenzhen 518060China Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China School of Environmental Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275China City University of Hong Kong Shenzhen Research institute Nanshan District8 Yuexing 1st RoadShenzhen Hi−Tech Industrial ParkShenzhen 518060China Department of Chemistry Islamic University of Science and TechnologyAwantipora 192122India

Porous photocatalysts are promising materials capable of simultaneously adsorbing and oxidizing/reducing target species,showing great potentials in environmental remediation and energy *** review offered a comprehensive overview of the recent progress in design,fabrication,and applications of porous photocatalysts,including carbon-based semiconductors,metal oxides/sulfides,metal–organic frameworks,and adsorbent–photocatalyst *** fundamental understanding of the structure–performance relationships of porous materials together with the in-depth insights into the synergetic effects between adsorption and photocatalysis was *** strategies to further improve the photocatalytic activity of porous photocatalysts were *** review would provide references and outlooks of constructing efficient porous materials for adsorptive and photocatalytic removal of pollutants and energy production.

关键词： adsorption photocatalysis porous materials synergetic effect

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Nano-bio interfaces effect of two-dimensional nanomaterials and their applications in cancer immunotherapy

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Acta Pharmaceutica Sinica B 2021年第11期11卷 3447-3464页

作者： Zhongmin Tang Yufen Xiao Na Kong Chuang Liu Wei Chen Xiangang Huang Daiyun Xu Jiang Ouyang Chan Feng Cong Wang Junqing Wang Han Zhang Wei Tao International Collaborative Laboratory of 2D Materials for optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Center for Nanomedicine and Department of Anesthesiology Brigham and Women's HospitalHarvard Medical SchoolBostonMA 02115USA School of Pharmaceutical Sciences(Shenzhen) Sun Yat-sen UniversityGuangzhou 510275China

The field of two-dimensional(2D)nanomaterial-based cancer immunotherapy combines research from multiple subdisciplines of material science,nano-chemistry,in particular nanobiological interactions,immunology,and medicinal *** importantly,the"biological identity"of nanomaterials governed by bio-molecular corona in terms of bimolecular types,relative abundance,and conformation at the nanomaterial surface is now believed to influence blood circulation time,biodistribution,immune response,cellular uptake,and intracellular trafficking.A better understanding of nano-bio interactions can improve utilization of 2D nano-architectures for cancer immunotherapy and immunotheranostics,allowing them to be adapted or modified to treat other immune dysregulation syndromes including autoimmune diseases or inflammation,infection,tissue regeneration,and *** manuscript reviews the biological interactions and immunotherapeutic applications of 2D nanomaterials,including understanding their interactions with biological molecules of the immune system,summarizes and prospects the applications of 2D nanomaterials in cancer immunotherapy.

关键词： Two-dimensional nanomaterials Nano-bio interactions Immune system Antigens Adjuvants Modulators Cancer immunotherapy Biosensing

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Removal of Cr(Ⅵ)by glutaraldehyde-crosslinked chitosan encapsulating microscale zero-valent iron:Synthesis,mechanism,and longevity

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Journal of Environmental Sciences 2024年第8期142卷 115-128页

作者： Yijun Duan Fang Liu Xiang Liu Miao Li School of Environment Tsinghua UniversityBeijing 100084China Transportation institute of Inner Mongolia University Hohhot 010070China

microscale zero-valent iron(mZVI)has shown great potential for groundwater Cr(Ⅵ)***,low Cr(Ⅵ)removal capacity caused by passivation restricted the wide use of *** prepared mZVI/GCS by encapsulating mZVI in a porous glutaraldehydecrosslinked chitosan matrix,and the formation of the passivation layer was alleviated by reducing the contact between zero-valent iron *** average pore diameter of mZVI/GCS was 8.775 nm,which confirmed the mesoporous characteristic of this *** of batch experiments demonstrated that mZVI/GCS exhibited high Cr(Ⅵ)removal efficiency in a wide range of pH(2-10)and temperature(5-35℃).Common groundwater coexisting ions slightly affected m ZVI/*** material showed great reusability,and the average Cr(Ⅵ)removal efficiency was 90.41%during eight *** this study,we also conducted kinetics and isotherms ***-second-order model was the most matched kinetics *** Cr(Ⅵ)adsorption process was fitted by both Langmuir and Freundlich isotherms models,and the maximum Langmuir adsorption capacity of m ZVI/GCS reached243.63 mg/g,which is higher than the adsorption capacities of materials reported in most of the previous ***,the column capacity for Cr(Ⅵ)removal of a mZVI/GCS-packed column was 6.4 times higher than that of a mZVI-packed column in a 50-day ***,mZVI/GCS with a porous structure effectively relieved passivation problems of mZVI and showed practical application prospects as groundwater Cr(Ⅵ)remediation material with practical application prospects.

关键词： Chitosan Glutaraldehyde mZVI Cr(Ⅵ) Groundwater

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Solar Driven 15.7% Hydrogen Conversion by Harmony of Light Harvesting,Electron Transporting Bridge,and S-Defection in a Self-Assembled microscale CuS/rGO/CP Photoanode

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Energy & Environmental Materials 2024年第3期7卷 194-205页

作者： Sujeong Kim Boseok Seo Hyerim Park Younghwan Im Jeong Yeon Do Byung Sub Kwak Namgyu Son Minkyu Kim Misook Kang Department of Chemistry College of Natural SciencesYeungnam University School of Chemical Engineering Yeungnam University Department of Energy and Hydrocarbon Chemistry Graduate School of EngineeringKyoto University Korea Evaluation institute of Industrial Technology (Keit) Electric Power Research institute (KEPRI) 105 Munji-ro

CuS is an encouraging photoelectrode candidate that meets the essential requirements for efficient solar-to-hydrogen production,but it has not been thoroughly studied.A CuS light absorber layer is grown by the self-assembly of copper and sulfur precursors on a carbon paper （CP） ***,rCO is introduced as a buffer layer to control the optical and electrical properties of the *** well-ordered microstructural arrangement suppresses the recombination loss of electrons and holes owing to enhanced charge-carrier generation,separation,and *** potential reaching 10mA cm-2in 1.0 M KOH solution is significantly lowered to 0.87 V,and the photocurrent density at 1.23 V is 94.7 mA *** computational result reveals that the potential-determining step is sensitive to O*stability; the lower stability of O*in the thin layer of CuS/rCO decreases the free-energy gap between the initial and final states of the potential-determining step,resulting in a lowering of the onset *** faradaic efficiency for the photoelectrochemical oxygen evolution reaction in the optimized 2CuS/1rCO/CP photoanode is 98.60%,and the applied bias photon-to-current and the solar-to-hydrogen efficiencies are 11.2%and 15.7%,respectively,and its ultrahigh performance is maintained for 250 *** record-breaking achievement indices may be a trigger for establishing a green hydrogen economy.

关键词： 15.7%-solar to hydrogen density functional theory lower photopotential p-CuS/rGO/CP photoanode photoelectrochemical oxygen evolution

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Watt-level Pr^3+:YLF deep red laser pumped by a fiber-coupled blue LD module or a single-emitter blue LD

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Chinese Optics Letters 2020年第1期18卷 59-63页

作者： Miaomao He Sheng Chen Quanxin Na Shaojuan Luo Haiyong Zhu Ying Li Changwen Xu Dianyuan Fan International Collaborative Laboratory of 2D Materials for optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province Shenzhen UniversityShenzhen 518060China College of Electrical and Electronic Engineering Wenzhou UniversityWenzhou 325035China

A power-scaled laser operation of Pr:YLi F4(YLF)crystal at 720.9 nm pumped by a 443.6 nm laser diode(LD)module was *** 20 W module was used to pump the Pr:YLF crystal,and a maximum output power of 3.03 W with slope efficiency of 30.04%was *** addition,a 5 W blue LD was also used to pump the Pr:YLF laser,and a maximum output power of 0.72 W was obtained at room *** output power was limited by the wavelength mismatch between the single-emitter LD and the absorption peak of the crystal.

关键词： rare earth and transition metal solid-state lasers visible lasers diode-pumped lasers

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Filterless narrowband photodetectors enabled by controllable band modulation through ion migration: The case of halide perovskites

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InfoMat 2024年第1期6卷 123-138页

作者： Yu Li Shanshan Yu Junjie Yang Kai Zhang Mingyu Hu Weitao Qiu Fumin Guo Wei Qian Sean Reinecke Tao Chen Makhsud I.Saidaminov Jian Wang Shihe Yang Guangdong Provincial Key Lab of Nano-Micro Materials Research School of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhenGuangdongthe People's Republic of China Shenzhen Bay Laboratory Institute of Biomedical EngineeringShenzhenGuangdongthe People's Republic of China School of Advanced Materials Shenzhen Graduate SchoolPeking UniversityShenzhenGuangdongthe People's Republic of China Department of Chemistry The University of Hong KongHong Kong SARthe People's Republic of China Hefei National Laboratory for Physical Sciences at microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhuithe People's Republic of China College of Materials and Energy South China Agricultural UniversityGuangzhouGuangdongthe People's Republic of China Department of Chemistry University of VictoriaVictoriaBritish ColumbiaCanada

Narrowband photodetectors conventionally rely on optical structure design orbandpass filters to achieve the narrowband regime. Recently, a strategy forfilterless narrowband photoresponse based on the charge collection narrowing(CCN) mechanism was reported. However, the CCN strategy requires an electrically and optically “thick” photoactive layer, which poses challenges in controlling the narrowband photoresponse. Here we propose a novel strategy forconstructing narrowband photodetectors by leveraging the inherent ion migration in perovskites, which we term “band modulation narrowing” (BMN). Bymanipulating the ion migration with external stimuli such as illumination,temperature, and bias voltage, we can regulate in situ the energy-band structure of perovskite photodetectors (PPDs) and hence their spectral *** the Fermi energy levels obtained by the Kelvin probe force microscopy, the internal potential profiles from solar cell capacitance simulator simulation, and the anion accumulation revealed by the transient ion-drifttechnique, we discover two critical mechanisms behind our BMN strategy: theextension of an optically active but electronically dead region proximal to the top electrode and the down-bending energy bands near the electron transportlayer. Our findings offer a case for harnessing the often-annoying ionmigration for developing advanced narrowband PPDs.

关键词： band structure ion migration narrowband detection perovskite spatial distribution of charge carriers

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High Rate and Long Lifespan Sodium‑Organic Batteries Using Pseudocapacitive Porphyrin Complexes‑Based Cathode

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Nano-Micro Letters 2021年第5期13卷 1-16页

作者： Xi Chen Xin Feng Bo Ren Liangzhu Jiang Hongbo Shu Xiukang Yang Zhi Chen Xiujuan Sun Enhui Liu Ping Gao Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Key Laboratory for Green Organic Synthesis and Application of Hunan ProvinceCollege of ChemistryXiangtan UniversityXiangtan 411105People’s Republic of China International Collaborative Laboratory of 2D Materials for optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsCollege of Chemistry and Enviromental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China

Sodium-organic batteries utilizing natural abundance of sodium element and renewable active materials gain great attentions for grid-scale ***,the development is still limited by lack of suitable organic cathode materials with high electronic conductivity that can be operated stably in liquid ***,we present 5,15-bis(ethynyl)-10,20-diphenylporphyrin(DEPP)and[5,15-bis(ethynyl)-10,20-diphenylporphinato]copper(II)(CuDEPP)as new cathodes for extremely stable sodium-organic *** copper(II)ion partially contributes the charge storage and significantly stabilizes the structure of porphyrin complex for electrochemical energy *** situ electrochemical stabilization of organic cathode with a lower charging current density was identified which enables both improved high energy density and power *** excellent longterm cycling stability up to 600 cycles and an extremely high power density of 28 kW kg−1 were achieved for porphyrin-based *** observation would open new pathway for developing highly stable sodium-organic cathode for electrochemical energy storage.

关键词： Organic cathode Sodium-organic batteries Porphyrin complex Rechargeable batteries Pseudocapacitive effect

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Generation of ultrafast radially polarized pulses through chirp-assisted femtosecond optical parametric amplification

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Science China(Physics,Mechanics & Astronomy) 2022年第5期65卷 51-57页

作者： SaiSai Hu JieFeng Huang XinHao Ren ChangWen Xu ShiXiang Xu DianYuan Fan HaiZhe Zhong International Collaborative Laboratory of 2D Materials for Optoelectronic Science&Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

Radially polarized beams characterized by an axially symmetric polarization distribution can be sharply focused to produce strong longitudinal fields in the *** applications of these beams will be facilitated by the availability of higher powers and shorter ***,the ultrafast radially polarized pulse is typically generated via wavefront reconstruction from conventional linearly polarized *** pulse duration and intensity limits are strictly dependent on extra-cavity ***,a chirp-assisted near-degenerate type-II parametric process is presented as a pulse-energy-scalable method of accessing ultrafast radially polarized *** a proof-of-principle experiment,the broadband gain balance between the orthogonally polarized signal components was realized via controlling the chirp of the pump *** an analogous pulseduration transfer effect,the radially polarized signal inherited the temporal and spectral characteristics of the pump pulse and maintained the radial polarization state of each frequency component of the *** a shorter pump pulse,the generation of few-cycle radially polarized pulses should be achievable,which may facilitate a wide range of ultrafast applications such as vacuum electron acceleration and high-harmonic generation.

关键词： radially polarized beam optical parametric amplifier ultrafast lasers spectral broadening optical parametric phase

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