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structure engineering of Ga2O3 photodetectors: a review

JOURNAL OF PHYSICS D-APPLIED PHYSICS 2025年第6期58卷 063003-063003页

作者： Wu, Wentao Huang, Hong Wang, Yilin Yin, Haoran Han, Keju Zhao, Xiaolong Feng, Xiao Zeng, Yan Zou, Yanni Hou, Xiaohu Wei, Zhongming Long, Shibing Univ Sci & Technol China Sch Microelect Hefei 230026 Peoples R China Chinese Acad Sci Inst Semicond State Key Lab Superlatt & Microstruct Beijing 100083 Peoples R China

Deep ultraviolet (DUV) photodetectors play important roles in the modern semiconductor industry due to their diverse applications in critical fields. Wide bandgap semiconductor Ga2O3 is considered as one promising material for highly sensitive DUV photodetectors. However, the high responsivity of Ga2O3 DUV photodetectors always comes at the expense of its response speed. Material engineering for high-quality Ga2O3 materials can optimize the photoresponse performance but at the cost of much more complex process. structure engineering can efficiently improve the performance of Ga2O3 photodetectors based on various physical mechanisms. Owing to the increased modulation probabilities, part schemes of structure engineering even alleviate the tough requirements on Ga2O3 material quality for high-performance DUV photodetectors. This article reviews the recent efforts in optimizing the performance of Ga2O3 photodetectors through structure engineering. Firstly, photodetectors based on Ga2O3 nanostructures and metasurface structures with nanometer size effect are discussed. In addition, junction structures of Ga2O3 photodetectors, which effectively promote carrier separation in the depletion region, are summarized based on a classification of Schottky junction, heterojunction, phase junction, etc. Besides, Ga2O3 avalanche photodiodes, offering ultra-high gain and responsivity, are focused as a promising prototype for commercialization. Furthermore, field effect phototransistors, based on which the scalability and low power performance of Ga2O3 photodetectors have been well proven, are analyzed in detail. Moreover, auxiliary-field configurations with extra tunable dimensions for Ga2O3 photodetectors are introduced. Finally, we conclude this review and discuss the main challenges of Ga2O3 DUV photodetectors from our perspective.

关键词： wide bandgap semiconductor structure engineering deep ultraviolet photodetector

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structure engineering by Picosecond Laser Lithography Boosts Highly Reversible Zn Anode

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ADVANCED FUNCTIONAL MATERIALS 2025年第12期35卷

作者： Zhan, Shengkang Liu, Zixuan Ning, Fanghua Liu, Xiaoyu Dai, Ye Lu, Shigang Xia, Yongyao Yi, Jin Shanghai Univ Dept Phys Inst Sustainable Energy Coll Sci Shanghai 200444 Peoples R China Fudan Univ Dept Chem Shanghai 200433 Peoples R China Fudan Univ Inst New Energy Shanghai 200433 Peoples R China

The practical application of aqueous zinc ion batteries (AZIBs) is impeded by the instability of the Zn anode|electrolyte interface, including dendrite growth, hydrogen evolution reaction (HER), and corrosion. Herein, the periodical micro-nano structure is constructed on the surface of Zn anode through picosecond laser lithography (PLL) technology. This micro-nano surface structure is conductive to obtain hydrophobicity for diminishing direct contact between the electrolyte and Zn anode, enhancing the corrosion resistance of the Zn anode. Simultaneously, the low surface energy and reconstructed electric field are achieved through laser-induced texture microstructure, leading to the oriented Zn2+ deposition along the (002) plane. As a result, the lower electrochemical polarization and long cycling stability of 1400 h for Zn||Zn symmetric cell is achieved at 4 mA cm-2 and 2 mAh cm-2. The average coulombic efficiency (CE) of the Zn||Cu cell is enhanced to 99.83% at 2 mA cm-2, while the Zn||MnO2 cell delivers a capacity retention of 68.7% after 600 cycles at 1 A g-1. Consequently, the advantages of micro-nano structure can highlight the importance of surface structure design for the development of stable Zn anode.

关键词： aqueous Zn-ion batteries micro-nano structure picosecond laser lithography structure engineering zinc anode

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structure engineering of Layered Double Hydroxides(LDHs)for Heterogeneous Catalysis

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Chemical Research in Chinese Universities 2024年第4期40卷 590-610页

作者： GAO Zhexi MA Haoran WANG Qian LI Dianqing FENG Junting DUAN Xue State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical CatalystsBeijing University of Chemical TechnologyBeijing100029P.R.China Quzhou Institute for Innovation in Resource Chemical Engineering Quzhou324000P.R.China

Layered double hydroxide(LDH)is regarded as an advanced platform material in catalysis and attracts vast attrition *** a kind of two-dimensional layered material,it exhibits great advantages including cation-tunability in layer,lattice limitation,topological transformation,ion exchange and intercalation *** also can be used as building blocks for composite catalytic *** 100 years,a large number of works have been accomplished and researchers made great progress on investigating the LDH-based catalytic *** this review,we summarize representative achievements and significant progress in recent years,which mainly include constructing high entropy catalytic material,high dispersion/stability and interfacial supported catalytic material,composite catalytic materials and nano-reactor based on ***,through collecting the excellent works,we conclude the future development potential of LDH and provide a perspective.

关键词： Layered double hydroxide(LDH)material Heterogeneous catalysis structure engineering

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structure engineering of cathode host materials for Li-S batteries

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Rare Metals 2024年第4期43卷 1370-1389页

作者： Jia-Jun Long Hua Yu Wen-Bo Liu School of New Energy and Materials Southwest Petroleum UniversityChengdu610500China School of Mechanical Engineering Sichuan UniversityChengdu610065China

Although lithium-sulfur batteries are one of the favorable candidates for next-generation energy storage devices,a few key challenges that have not been addressed have limited its *** challenges include lithium dendrite growth in the anode side,volume change of the active material,poor electrical conductivity,dissolution and migration of poly sulfides,and slow rate of solid-state reactions in the cathode *** the electrochemical performance of lithium-sulfur batteries is greatly affected by the design of the cathode host material,it has also been widely discussed in addressing the abovementioned *** this paper,three design ideas of cathode host materials in terms of microstructure,crystal structure and electronic structure are introduced and ***,the current progress of these three structural design strategies and their effects on the electrochemical performance of lithium-sulfur batteries are discussed in ***,future directions in the structural design of cathode materials for lithium-sulfur batteries are discussed and further perspectives are provided.

关键词： Lithium-sulfur batteries structure engineering Cathode Host materials

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structure engineering of amorphous P-CoS hollow electrocatalysts for promoted oxygen evolution reaction

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2022年第34期47卷 15189-15197页

作者： Li, Zhao Li, Chuanlong Huang, Jingjing Sun, Wei Cheng, Wenjing He, ChangChun Tian, Lin Xuzhou Univ Technol Sch Mat & Chem Engn Xuzhou 221018 Jiangsu Peoples R China Yili Normal Univ Sch Chem & Environm Sci Ili 835000 Xinjiang Peoples R China

Oxygen evolution reaction (OER) is a key process involved in many energy-related conversion systems. An ideal OER electrocatalyst should possess rich active sites and optimal binding strength with oxygen-containing intermediates. Although numerous endeavors have been devoted to the modification and optimization of transition-metal-based OER electrocatalysts, they are still operated with sluggish kinetics. Herein, an ion-exchange approach is proposed to realize the structure engineering of amorphous P-CoS hollow nanomaterials by utilizing the ZIF-67 nanocubes as the precursors. The precise structure control of the amorphous hollow nanostructure contributes to the large exposure of surface active sites. Moreover, the introduction of phosphorus greatly modifies the electronic structure of CoS2, which is thus favorable for optimizing the binding energies of oxygenated species. Furthermore, the incorporation of phosphorus may also induce the formation of surface defects to regulate the local electronic structure and surface environment. As a result of this, such P-CoS hollow nanocatalysts display remarkable electrocatalytic activity and durability towards OER, which require an overpotential of 283 mV to afford a current density of 10 mA cm-2, outperforming commercial RuO2 catalyst.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键词： structure engineering Oxygen evolution reaction Hollow Ion-exchange Electrocatalyst

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Research on construction simulation technology of civil building structure engineering based on artificial intelligence

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ADVANCES IN NANO RESEARCH 2024年第1期16卷 71-79页

作者： Zhang, Zhongkuo Ren, Jie Yancheng Inst Technol Sch Civil Engn Yancheng 224051 Jiangsu Peoples R China Inner Mongolia Univ Technol Sch Architecture Hohhot 010051 Inner Mongolia Peoples R China

Nanotechnology is the latest technology developed by humanity, trying to use the molecular properties of materials found in nature to create devices that solve the problems plaguing humanity and their efficiency. Man is also trying to change the meaning of molecules to nano so that a body made up of these particles has all the properties of these particles. Nanotechnology is not a new field but a new approach in all areas. A new perspective in concrete technology has been created by the use of nanoparticles in recent years. Adding silica nanoparticles to concrete mixes improves its properties and increases its strength. However, different results and reported mechanisms explain the behavior of nanoparticles in the mixture;Therefore, it took much work to generalize the results and predict the behavior of nano concretes. This article is about the construction simulation technology of civil engineering based on artificial intelligence, which deals with the effect of nanoparticles on improving concrete properties. This was demonstrated by analyzing laboratory samples in various mixture configurations and observing how silica nanoparticles affected their microstructure with scanning electron microscopy (SEM). Based on SEM measurements, silica nanoparticles have a powerful effect because of their specific surface area. Their increase and decrease must be sought in interacting with the filling and nucleation mechanism and the pozzolanic activity. Each of these mechanisms dominates at different ages of hydration and affects the microstructure and mechanical properties of concrete.

关键词： artificial intelligence concrete nanoparticles nanotechnology silica structure engineering

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From urea to high-efficiency photocatalyst: The impact of confined-degree and silica support on structure engineering of carbon nitride

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JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS 2025年 167卷

作者： Yan, Zhaoli Li, Tiantian Wang, Li Yu, Yongsheng He, Xi Liu, Peng Jing, Qiangshan Xinyang Normal Univ Coll Chem & Chem Engn Henan Key Lab Utilizat Nonmet Mineral South Henan Xinyang 464000 Peoples R China Anyang Inst Technol Sch Chem & Environm Engn Anyang 455000 Peoples R China Changsha Ind Technol Res Inst Environm Protect Changsha 410100 Peoples R China Aerosp Kaitian Environm Technol Co Ltd Changsha 410100 Peoples R China

Background: The synthesis of g-C3N4 (CN) through confined pyrolysis of urea is a widely employed method. However, the impact of confined-degree on the nano- and molecular-structure of CN has been scarcely addressed. Methods: We investigated this influence by varying the confined-degree of the covered crucibles used for urea pyrolysis. Additionally, a silica nanosheet (SiNS) support was incorporated to achieve high dispersion and easy use. Significant findings: With increasing confined-degree, the crystallinity and porosity of the synthesized CN nano- sheets initially decreased and then increased, whereas the size and dispersion exhibited an opposite tendency. The introduction of SiNS primarily enhanced the yield (excepting CN/SiNS-1), reduced the size (excepting CN/ SiNS-4), and improved the dispersion of the supported CN nanosheets. Furthermore, larger CN nanosheets with greater dispersion enhanced the separation efficiency of photoinduced carriers, whereas smaller nanosheets with higher crystallinity displayed a more negative conduction band minimum potential (ECBM), offering more reactive oxygen species. Therefore, the optimal CN/SiNS-4 composite exhibited significant photocatalytic activity for degrading Rhodamine B in 25 min, with an apparent rate constant of 0.189 min-1, owing to the nanostructure dependent photoreactivity of the well-dispersed and small-sized CN nanosheets, and the strong adsorption capacity of SiNS and urea-derived CN.

关键词： Confined urea pyrolysis Silica support structure engineering Photocatalysis

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Synergistic structure engineering and electrochemical activation modulating vanadium oxide cathode toward superior zinc-ion storage

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CHEMICAL engineering JOURNAL 2024年 496卷

作者： Fang, Kan Zhang, Heng Chen, Peng Zhang, Hua-Yu Wei, Zhan Ding, Ling Ye, Xiao-Ai Liu, Jiawang Liu, Yi-Lin Wang, Gui-Gen Yang, Hui Ying Harbin Inst Technol Sch Mat Sci & Engn Guangdong Prov Key Lab Semicond Optoelect Mat & In Shenzhen 518055 Peoples R China Suzhou Univ Sci & Technol Sch Mat Sci & Engn Suzhou 215009 Peoples R China Nanjing Univ Aeronaut & Astronaut Coll Mat Sci & Technol Jiangsu Key Lab Electrochem Energy Storage Technol Nanjing 210016 Peoples R China Univ South China Sch Mech Engn Hengyang 421001 Hunan Peoples R China Singapore Univ Technol & Design Pillar Engn Prod Dev 8 Somapah Rd Singapore 487372 Singapore

Aqueous zinc-ion batteries (ZIBs) have emerged as competitive systems for grid-scale energy storage due to their high safety and low cost. However, the lack of suitable high-performance cathode composites limits the practical progress of ZIBs. Herein, a novel cathode material, ammonium cation-inserted and oxygen vacancy co-modulated VO2 (named NVE), was firstly synthesized through the ethylene glycol (EG) sacrificial solvent-assisted structure transformation with the ammonium vanadate (named NV) as the precursor. The sacrificial solvent promotes the structural transformation of ammonium vanadate to NH4+-intercalated vanadium oxide and enhances the number of oxygen vacancies in the resulting material. Moreover, the electrochemical activation process was performed for in-situ construction of NH4+-inserted hydrated vanadium oxide (V2O5 & sdot;nH2O) material. The electrochemical activation process with high anodic voltage enables multiple electron reactions, increasing the utilization of vanadium elements and achieving high capacity. Additionally, the formed hydrogen bonds between the V-O host and inserted NH4+ ions can enhance the structural integrity, while the oxygen vacancies decrease the interaction between the V-O host and inserted Zn2+ ions to boost ion diffusion. Consequently, the resulting activated cathode demonstrates higher capacity (441 mAh/g at 0.1 A/g), superior cycling durability (85.6 % retention over 4000 cycles), and exceptional rate capability (205 mAh/g at 20 A/g). Besides, the fabricated devices based on the activated NVE cathode show decent capacity and excellent flexible stability. Furthermore, the reversible electrochemical Zn2+ storage mechanism upon battery cycling was evaluated by several kinetic measurements and in/ex-situ characterizations. This work provides novel perspectives for the fabrication of advanced cathode materials for superior aqueous ZIBs.

关键词： Aqueous zinc -ion batteries Vanadium oxide cathode structure engineering Electrochemical activation High capacity

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Surface structure engineering and electromagnetic character regulation synergestically boosts electromagnetic shielding performances of carbon nanotube sponge

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CARBON 2025年 233卷

作者： Zhang, Jiapeng Zhang, Sheng Song, Yaoqieyu Weng, Yuyan Liang, Yanhan Wu, Zhe Hang, Zhi Hong Zhang, Tianhui Zhang, Xiaohua Li, Yitan Yang, Zhaohui Soochow Univ Sch Phys Sci & Technol Suzhou 215006 Peoples R China Shandong Univ Natl Engn Res Ctr Colloidal Mat Sch Chem & Chem Engn Jinan 250100 Shandong Peoples R China Shandong Univ Key Lab Colloid & Interface Chem Minist Educ Jinan 250100 Shandong Peoples R China Soochow Univ Ctr Soft Condensed Matter Phys & Interdisciplinary Suzhou 215006 Peoples R China Soochow Univ Inst Adv Study Collaborat Innovat Ctr Suzhou Nano Sci & Technol Suzhou 215006 Peoples R China Univ Elect Sci & Technol China Sch Phys Chengdu 611731 Peoples R China

The negative effects of electromagnetic (EM) pollution on precise electronic devices as well as public health have received serious attention. Although various electromagnetic interference (EMI) shielding materials have emerged, it is still a great challenge to effectively balance the high EMI shielding performance and low secondary emission of EM waves induced by direct reflection. In this study, we designed two type of shielding materials based on 3D carbon nanotube sponge (CNTS) with manufactured surface structure. By combining the 2D MXene layer or magnetic nickel coating with patterned CNTS, we achieve high EMI shielding performance and low reflectivity, as well as adjustable shielding mechanism through the dual adjustment of the structure and electromagnetic properties. The EMI shielding effectiveness of CNTS/MXene up to 90 dB and reflectivity as low as 0.31 (at 18 GHz), a reduction of about 64 % compared to the original CNTS. And the EMI shielding effectiveness of Ni/CNTS up to 67 dB and reflectivity as low as 0.44 (at 12 GHz). Microwave microscope (NFSMM), COMSOL simulation and vector network analyzer consistently confirmed the synergestical surpression effect on the reflectivity from surface structure engineering and electromagnetic regulation. These results not only guide the designing of advanced EMI shielding materials with low reflectivity, but also shed light on the hidden mechanism between interface structures and performances of the composite materials.

关键词： Electromagnetic interference shielding Carbon nanotube sponge structure engineering Low reflectivity MXene

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Local structure engineering of Ba1-xKxLa2Y2(SiO4)2O1-α: Eu²⁺ green phosphors for violet-light-excitable full-spectrum lighting

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JOURNAL OF ALLOYS AND COMPOUNDS 2024年 1007卷

作者： Zhu, Shuangyin Jin, Shilin Pang, Tao Zeng, Lingwei Lei, Lei You, Fengluan Fang, Yongzheng Chen, Daqin Fujian Normal Univ Coll Phys & Energy Fuzhou 350117 Peoples R China Huzhou Univ Coll Sci Huzhou Key Lab Mat Energy Convers & Storage Huzhou 313000 Zhejiang Peoples R China Hunan Univ Sci & Technol Sch Chem & Chem Engn Xiangtan 411201 Hunan Peoples R China China Jiliang Univ Inst Optoelect Mat & Devices Hangzhou 310018 Peoples R China Shanghai Inst Technol Sch Mat Sci & Engn Shanghai 201418 Peoples R China Fujian Normal Univ Fujian Prov Collaborat Innovat Ctr Adv High Field Fuzhou 350117 Fujian Peoples R China Fujian Normal Univ Fujian Prov Engn Technol Res Ctr Solar Energy Conv Fuzhou 350117 Fujian Peoples R China

To achieve comfortable and healthy full-spectrum lighting, the development of efficient and stable violet-lightexcitable phosphors is urgently required. Herein, we report a new type of green-emitting phosphor, Ba1-xKxLa2Y2(SiO4)(2)O1-alpha: Eu2+ (x=0-1). Interestingly, K+-alloying leads to continuous redshift of green emission from 500 nm to 517 nm accompanied with reduced full width at half maximum (FWHM) from 72 nm to 63 nm and enhanced excitation intensity in the violet spectral region. Rietveld refinements and spectral analysis evidence that K+-addition enhances the distortion of [M(I)O-9] and [M(II)O-7] (M(I/II) = Ba, La, Y, K) polyhedron and strengthens crystal field around Eu2+, which is responsible for the observed photoluminescence (PL) phenomenon. Finally, we design a full-spectrum white light emitting diode (WLED) with an ultra-high color rendering index (CRI, R-a) of 97.4 by coupling the as-prepared green-emitting phosphor (Ba0.7K0.3La2Y2(SiO4)(2)O1-alpha: Eu2+) and commercial blue/red phosphors with a violet LED chip, which demonstrates significant potential for application in healthy solid-state lighting.

关键词： Ba1-xKxLa2Y2(SiO4)(2)O1-alpha: Eu2+ Green phosphors Full-spectrum lighting structure engineering

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