检索结果-内蒙古大学图书馆

p-/n-Type modulation of 2D transition metal dichalcogenides for electronic and optoelectronic devices

Nano Research 2022年第1期15卷 123-144页

作者： Songyu Li Yang Ma Nabonswende Aida Nadege Ouedraogo Famin Liu Congya You Wenjie Deng Yongzhe Zhang School of Physics Beihang UniversityBeijing 100191China Key Laboratory of Advanced Functional Materials Ministry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China

Two-dimensional layered transition metal dichalcogenides(TMDCs)have demonstrated a huge potential in the broad fields of optoelectronic devices,logic electronics,electronic integration,as well as neural *** take full advantage of TMDC characteristics and efficiently design the device structures,one of the most key processes is to control their p-/n-type *** this review,we summarize the p-/n-type modulation of TMDCs based on diverse strategies consisting of intrinsic defect tailoring,substitutional doping,surface charge transfer,chemical intercalation,electrostatic modulation,and dielectric interface *** modulation mechanisms and comparisons of these strategies are analyzed together with a discussion of their corresponding device applications in electronics and ***,challenges and outlooks for p-/n-type modulation of TMDCs are presented to provide references for future studies.

关键词： transition metal dichalcogenides p-/n-type modulation doping method electronic devices optoelectronic devices

来源：评论

学校读者我要写书评

暂无评论

Homojunction and ohmic contact coexisting carbon nitride for efficient photocatalytic hydrogen evolution

引用

Nano Research 2023年第7期16卷 8782-8792页

作者： Xiao Fang Lu Chen Hongrui Cheng Xiaoqiong Bian Wenhao Sun Kaining Ding Xinghe Xia Xin Chen Jiefang Zhu Yuanhui Zheng College of Chemistry Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated MaterialsFuzhou UniversityFuzhou 350116China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350116China College of Physics and Information Engineering Fuzhou UniversityFuzhou 350116China Department of Chemistry−Ångström Laboratory Uppsala UniversityUppsala SE-75121Sweden The Key Laboratory for Ultrafine Materials of The Ministry of Education East China University of Science and TechnologyShanghai 200237China

Carbon nitride(CN)has attracted intensive attention as a visible light photocatalyst,but the rapid recombination of photogenerated charge carriers limits its photocatalytic ***,we develop a new strategy to construct both homojunction and ohmic junction into CN via selectively introducing metallized CN(MCN),which leads to rapid separation and transfer of photogenerated charge *** polymerization of urea in the presence of KOH creates CN homojunction with amino and cyano *** subsequent molten salt treatment induces a new type of cyano-terminated CN that can be converted to MCN through photodoping,forming homojunction and ohmic contact coexisting CN(HOCN).The formed HOCN photocatalyst exhibits a high photocatalytic H_(2)evolution rate of 18.5 mmol·g^(-1)·h^(-1)under visible light irradiation,45-fold higher than that of bulk *** strategy provides a new idea for designing ohmic contact between semiconductor and metal,and realizing efficient photocatalysis by improving charge separation and transfer.

关键词： carbon nitride photocatalysis homojunction ohmic contact hydrogen evolution

来源：评论

学校读者我要写书评

暂无评论

The application of a helicon plasma source in reactive sputter deposition of tungsten nitride thin films

引用

Plasma science and technology 2022年第6期24卷 157-163页

作者： Yan YANG Peiyu JI Maoyang LI Yaowei YU Jianjun HUANG Bin YU Xuemei WU Tianyuan HUANG College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060People's Republic of China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People's Republic of China Advanced Energy Research Center Shenzhen UniversityShenzhen 518060People's Republic of China School of Optoelectronic Science and Engineering Soochow UniversitySuzhou 215123People's Republic of China School of Physical Science and Technology Soochow UniversitySuzhou 215123People's Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China

A reactive helicon wave plasma(HWP)sputtering method is used for the deposition of tungsten nitride(WNx)thin films.N_(2)is introduced downstream in the diffusion *** impacts of N_(2)on the Ar-HWP parameters,such as ion energy distribution functions(IEDFs),electron energy probability functions(EEPFs),electron temperature(Te)and density(ne),are *** the addition of N_(2),a decrease in electron density is observed due to the dissociative recombination of electrons with N_(2)^(+).The similar IEDF curves of Ar+and N_(2)^(+) indicate that the majority ofN_(2)^(+) stems from the charge transfer in the collision between Ar+and N_(2).Moreover,due to the collisions between electrons and N_(2)ions,EEPFs show a relatively lower Tewith a depletion in the high-energy *** increasing negative bias from 50 to 200 V,a phase transition from hexagonal WN to fcc-WN0.5is observed,together with an increase in the deposition rate and roughness.

关键词： helicon wave plasma reactive sputtering tungsten nitride plasma diagnosis

来源：评论

学校读者我要写书评

暂无评论

Super retina TFT based full color microLED display via laser mass transfer

引用

science China(Information sciences) 2024年第11期67卷 5-19页

作者： Xu YANG Jinchai LI Xuhui PENG Chunfeng ZHAO Chao CHEN Xiaowei ZHANG Jinliang LIN Donghua LI Yuefen CHEN Zhaoxia BI Feng QIN Cheng LI Kai HUANG Junyong KANG Rong ZHANG Fujian Key Laboratory of Semiconductor Materials and Applications CI Center for OSEDEngineering Research Center of Micro-nano Optoelectronic Materials and Devices Ministry of EducationDepartment of Physics Xiamen University Future Display Institute of Xiamen Tianma Microelectronics Co. Ltd. School of Electronic Science and Engineering Xiamen University Tianma Advanced Display Technology Institute (Xiamen) Co. Ltd.

MicroLED display is considered one of the most promising technologies for next-generation displays. However, the high manufacturing cost has been a major obstacle to its accessibility to the general consumer market, and mass transfer, an essential process to achieve cost-effective manufacturing, has not yet reached commercial maturity. Critical issues, such as microLED chips, transfer equipments, and process materials, need to be addressed for the mass transfer technologies. In this work, we present a 1.63-inch full color microLED display module fabricated with laser mass transfer, which has a pixel density of 403 pixels per inch(PPI), the highest resolution ever achieved in the industry using mass transfer technologies. The laser mass transfer is realized with three process nodes: laser lift-off, laser induced forward transfer, and carrier bonding. Each node has been well explored to improve yields. Insights into the present progress and the future development of the laser mass transfer will be shared in this work.

关键词： microLED mass transfer LLO chip on wafer chip on carrier

来源：评论

学校读者我要写书评

暂无评论

Divertor heat flux challenge and mitigation in the EHL-2 spherical torus

引用

Plasma science and technology 2025年第2期27卷 97-109页

作者： Fuqiong WANG Xiang GU Jiankun HUA Yumin WANG Xiaokun BO Bo CHEN Yuejiang SHI Shuai XU Erhui WANG Yunfeng LIANG the EHL-2 Team College of Physics Donghua UniversityShanghai 201620People’s Republic of China Hebei Key Laboratory of Compact Fusion Langfang 065001People’s Republic of China ENN Science and Technology Development Co. Ltd.Langfang 065001People’s Republic of China International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Forschungszentrum Jülich GmbH Institute of Fusion Energy and Nuclear Waste Management-Plasma PhysicsJülich 52425Germany

The divertor design is critical to heat load handling and thus to achievements of highperformance plasma operations in the EHL-2(ENN He-Long 2)*** paper presents the design of an X-point target(XPT)divertor,featuring a conventional inner divertor and an XPT outer divertor,aimed at the effective control of heat loads,which may be extremely high during high ion temperature *** divertor target plates are made from carbon-based materials,which can handle heat loads of up to 5 MW/m².Divertor performances,including the heat load controllability,the onset of detachment and the in-out/up-down asymmetry,etc.,are evaluated using both the simple particle-tracking strategy and the complicated SOLPS-ITER *** attention is paid to the drift effects on particle/heat transport in the divertor/scrape-off layer region and on the divertor heat loads,focusing on the semi-detached/detached operation *** from SOLPS-ITER simulations demonstrated that the currently designed magnetic equilibrium and divertor configuration can effectively handle the power heat load in EHL-2.

关键词： heat flux divertor EHL-2

来源：评论

学校读者我要写书评

暂无评论

Unlocking multidirectional and broadband wind energy harvesting with triboelectric nanogenerator and vortex-induced vibration of sphere

引用

Applied Mathematics and Mechanics(English Edition) 2024年第11期45卷 1895-1912页

作者： Lanbin ZHANG Yixiang HE Bo MENG Huliang DAI Lin WANG Faculty of Engineering China University of GeosciencesWuhan430074China International Joint Research Center for Deep Earth Drilling and Resource Development Wuhan430074China Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment School of Aerospace EngineeringHuazhong University of Science and TechnologyWuhan430074China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenGuangdong Province518060China

A unique oscillating wind-driven triboelectric nanogenerator(OWTENG)based on the sphere's vortex-induced vibration(VIV)behavior is proposed in this study,which can harvest wind energy across a multitude of horizontal *** the Euler-Lagrange method,the coupled governing equations of the OWTENG are established and subsequently validated by experimental *** vibrational properties and output performance of the OWTENG for varying wind speeds are analyzed,demonstrating its effectiveness in capturing wind energy across a broad range of wind speeds(from 2.20 m/s to 8.84 m/s),and the OWTENG achieves its peak output power of 106.3μW at a wind speed of 5.72 m/***,the OWTENG maintains a steady output power across various wind directions within the speed range of 2.20 m/s to 7.63 m/***,when the wind speed exceeds 7.63 m/s,the vibrational characteristics of the sphere shift based on the wind direction,leading to fluctuations in the OWTENG's output *** research presents an innovative approach for designing vibrational triboelectric nanogenerators,offering valuable insights into harvesting wind energy from diverse directions and speeds.

关键词： wind energy harvesting triboelectric nanogenerator vortex-induced vibration(VIV) lock-in region

来源：评论

学校读者我要写书评

暂无评论

3D Object Detection Based on Spatially Adaptive Sparse Convolution

3D Object Detection Based on Spatially Adaptive Sparse Convo...

引用

2024 IEEE International Conference on Future Machine Learning and Data science, FMLDS 2024

作者： Hu, Jing Jing Fan, Yu Ling Zhang, Ping Duan, Chang Zhang, Chao Chen, Si Yu Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Chengdu China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China Chengdu China School of Electrical Engineering and Information Southwest Petroleum University Chengdu China Sichuan Police College Intelligent Policing Key Laboratory of Sichuan Province Luzhou China School of Computer Science And Technology Beijing Jiaotong University Beijing China

ISBN: (纸本)9798350391213

Autonomous driving has gradually gained attention in recent years due to its potential to reduce driver burden and improve safety, in which 3D object detection is the basis of the autonomous driving perception system, aiming at predicting the location, size, and class of 3D objects in the vicinity of an autonomous vehicle, which is an important guide for subsequent path planning, motion prediction, and so on. In particular, 3D object detection has difficulties in input point cloud data processing and multimodal fusion. Unlike the image distribution where pixels are regularly distributed in the image plane, the point cloud is a sparse and irregular 3D representation, so it is difficult to apply the traditional convolution directly on the point cloud for detection. In this paper, we carry out a method for 3D object detection for point clouds, using deformable convolution and sparse convolution as a tool to explore the feature extraction method of sparse convolution for irregular point clouds and propose a spatially adaptive sparse convolution-based method. © 2024 IEEE.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

Fully polarized Compton scattering in plane waves and its polarization transfer

引用

Matter and Radiation at Extremes 2024年第3期9卷 45-56页

作者： Suo Tang Yu Xin Meng Wen Mamat Ali Bake Baisong Xie College of Physics and Optoelectronic Engineering Ocean University of ChinaQingdaoShandong 266100China Department of Physics Hubei UniversityWuhan 430062China Xinjiang Key Laboratory of Solid State Physics and Devices School of Physics Science and TechnologyXinjiang UniversityUrumqi 830017China Key Laboratory of Beam Technology of the Ministry of Education and College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China

Fully polarized Compton scattering from a beam of spin-polarized electrons is investigated in plane-wave backgrounds in a broad intensity region from the perturbative to the nonperturbative *** the perturbative regime,polarized linear Compton scattering is considered for investigating polarization transfer from a single laser photon to a scattered photon,and in the high-intensity region,the polarized locally monochromatic approximation and locally constant field approximation are established and are employed to study polarization transfer from an incoming electron to a scattered *** numerical results suggest an appreciable improvement of about 10%in the scattering probability in the intermediate-intensity region if the electron’s longitudinal spin is parallel to the laser *** longitudinal spin of the incoming electron can be transferred to the scattered photon with an efficiency that increases with laser intensity and collisional *** collision between an optical laser with frequency1 eV and a 10 GeV electron,this polarization transfer efficiency can increase from about 20%in the perturbative regime to about 50%in the nonperturbative regime for scattered photons with relatively high energy.

关键词： polarized scattered transfer

来源：评论

学校读者我要写书评

暂无评论

Intelligent Identification Method for Weak Links in Low-voltage Distribution Networks Containing Distributed Photovoltaics

Intelligent Identification Method for Weak Links in Low-volt...

引用

2024 International Conference on New Power System and Power Electronics, NPSPE 2024

作者： Li, Zilong Zhang, Chijun Yang, Lingfeng Lin, Xiaoqing Zhang, Chengfeng Guangdong University of Technology School of Computer Science Guangzhou China Sun Yat-Sen University School of Information Management Guangzhou China Guangdong University of Technology School of Physics and Optoelectronic Engineering Guangzhou China Gansu Agricultural University College of Mechanical and Electrical Engineering Lanzhou China Dalian University of Technology School of Electrical Engineering Dalian China

ISBN: (纸本)9798350389869

With the rapid development of distributed photovoltaic power generation around the world, its impact on the power grid, especially the low-voltage distribution network, is becoming increasingly significant, bringing new challenges to the operation and management of traditional power grids. In response to this issue, this article intends to use a combination of data-driven and machine learning methods to accurately identify low-voltage distribution networks with distributed photovoltaic access. This article adopts a new deep learning-based method for identifying the operating status of power systems, utilizing massive real-time data collection and processing technology to analyze and learn the operating status of the power grid, and optimizing the identification accuracy using feature engineering. A new type of fault diagnosis method is adopted to address potential instability issues in the distribution system, achieving real-time monitoring and early warning of instability risks in the power system, thereby effectively improving the safe and reliable operation of the distribution system. The accuracy has increased from 0.80 to 0.90, proving that a larger dataset significantly enhances the model's ability to identify weak links in low-voltage distribution networks. The research results of this article can provide new ideas for China's new energy consumption and technical support for China's new energy consumption and sustainable development of the power grid. © 2024 IEEE.

关键词： Photovoltaics

来源：评论

学校读者我要写书评

暂无评论

Optically pumped wavelength-tunable lasing from a GaN beam cavity with an integrated Joule heater pivoted on Si

引用

Chinese physics B 2023年第5期32卷 478-484页

作者：秦飞飞孙阳杨颖李欣王旭卢俊峰王永进朱刚毅 GaN Optoelectronic Integration International Cooperation Joint Laboratory of Jiangsu Province College of Telecommunications and Information EngineeringNanjing University of Posts and TelecommunicationsNanjing 210003China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology(Nanjing University of Posts and Telecommunications Ministry of Education)Nanjing 210003China Department of Microelectronic Science and Engineering School of Physical Science and TechnologyNingbo UniversityNingbo 315211China College of Physics Nanjing University of Aeronautics and AstronauticsNanjing 211106China

Dynamically tunable laser sources are highly promising for realizing visionary concepts of integrated photonic circuits and other applications. In this paper, a Ga N-based laser with an integrated PN junction heater on Si is *** photoluminescence properties of the Ga N beam cavity are controlled by temperature, and the Joule heater provides electrically driven regulation of temperature. These two features of the cavity make it possible to realize convenient tuning of the lasing properties. The multi-functional Ga N beam cavity achieves optically pumped lasing with a single mode near 362.4 nm with a high Q-factor of 1394. The temperature of this device increases by 0–5℃ under the Joule heating effect. Then, electrical control of the lasing mode is demonstrated. The lasing resonant peak shows a continuous redshift of about 0.5 nm and the device also exhibits dynamic switching of its lasing mode. The lasing modulation can be ascribed to temperature-induced reduction of the bandgap. Our work may be of benefit for external optical modulation in future chip-based optoelectronic devices.

关键词： GaN beam cavity optically pumped lasing dynamically tunable laser source Joule heater

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：