检索结果-内蒙古大学图书馆

Visual synapse based on reconfigurable organic photovoltaic cell

Journal of Semiconductors 2025年第2期46卷 105-112页

作者： Xiangrong Pu Fan Shu Qifan Wang Gang Liu Zhang Zhang School of Microelectronics Hefei University of TechnologyHefei 230009China National Key Laboratory of Science and Technology on Micro/Nano Fabrication Shanghai Jiao Tong UniversityShanghai 200240China

The hierarchical and coordinated processing of visual information by the brain demonstrates its superior ability to min-imize energy consumption and maximize signal transmission ***,it is crucial to develop artificial visual synapses that integrate optical sensing and synaptic *** study fully leverages the excellent photoresponsivity proper-ties of the PM6:Y6 system to construct a vertical photo-tunable organic memristor and conducts in-depth research on its resis-tive switching performance,photodetection capability,and simulation of photo-synaptic behavior,showcasing its excellent per-formance in processing visual information and simulating neuromorphic *** device achieves stable and gradual resis-tance change,successfully simulating voltage-controlled long-term potentiation/depression(LTP/LTD),and exhibits various photo-electric synergistic regulation of synaptic ***,the device has successfully simulated the image percep-tion and recognition functions of the human visual nervous *** non-volatile Au/PM6:Y6/ITO memristor is used as an artificial synapse and neuron modeling,building a hierarchical coordinated processing SLP-CNN cascade neural network for visual image recognition training,its linear tunable photoconductivity characteristic serves as the weight update of the net-work,achieving a recognition accuracy of up to 93.4%.Compared with the single-layer visual target recognition model,this scheme has improved the recognition accuracy by 19.2%.

关键词： organic memristor visual synapse neuromorphic computing PM6:Y6 image recognition

来源：评论

学校读者我要写书评

暂无评论

液体-固体添加剂协同制备19.1%效率全聚合物太阳能电池（英文）

引用

science China Materials 2025年第5期68卷 1369-1375页

作者：甘子瑞汪亮陈宸夏唯宜刘晨皓陈正宏周金鹏陈泽新刘丹李伟王涛 School of Materials Science and Engineering Wuhan University of Technology School of Materials and Microelectronics Wuhan University of Technology

聚合物受体由于分子链缠结,易于在光伏薄膜中产生过度聚集,从而在能量转换过程中阻碍激子解离.尽管高沸点溶剂可以减缓聚合物受体的过度聚集,但同时会抑制其结构有序性,从而阻碍全聚合物太阳能电池(all-PSCs)中的电荷输运.在该研究中,... 详细信息

聚合物受体由于分子链缠结,易于在光伏薄膜中产生过度聚集,从而在能量转换过程中阻碍激子解离.尽管高沸点溶剂可以减缓聚合物受体的过度聚集,但同时会抑制其结构有序性,从而阻碍全聚合物太阳能电池(all-PSCs)中的电荷输运.在该研究中,溶剂添加剂1-CN与固体添加剂INMB-F的协同作用被证明能够解决上述问题,通过增强结构有序性和精细调控相分离,在PM6:PY-IT全聚合物体系中实现了19.1%的光电转换效率(PCE),这一效率是迄今为止报道的基于PY-IT的二元全聚合物太阳能电池中的最高值之一.分子动力学模拟和X射线衍射结果表明, 1-CN可以促进PY-IT大分子链的解缠,而INMB-F则能够与这些解缠的大分子链发生相互作用,促进有序堆积,从而同时增强激子解离和电荷输运.

关键词： all-polymer solar cells power conversion efficiency solvent additive solid additive morphology optimization

来源：评论

学校读者我要写书评

暂无评论

A comparative study of deep reinforcement learning algorithms in ultrafast mode-locked fiber lasers

A comparative study of deep reinforcement learning algorithm...

引用

2024 International Conference on Optical and Photonic Engineering, icOPEN 2024

作者： Pan, Shiyi Chen, Gezhi Tian, Yu Qiu, Chen Luo, Sanyu Li, Li Nanjing University of Science and Technology School of Microelectronics Nanjing Jiangsu210094 China

ISBN: (数字)9781510688117

ISBN: (纸本)9781510688100

Trending with the recent artificial intelligence development, deep reinforcement learning (DRL) algorithms have found vibrant applications for ultrafast mode-locked fiber lasers in practice. However, there has been lacking a comprehensive and detailed study regarding the algorithms' performance in these laser systems up to date. In this paper, we present a comparative study of three popular DRL algorithms, the Double Deep Q Network (DDQN), Twin Delayed Deep Deterministic policy gradient (TD3), and Soft Actor-Critic (SAC), which are theoretically implemented in nonlinear-polarization-rotation-based mode-locked fiber laser systems. In our DRL performance simulations, the reward function is designed specifically to maximize the tendency towards mode-locking by the introduction of kurtosis in frequency domain. The simulated training processes indicate that the TD3 and SAC are outperforming DDQN in the multi-input context. It has been found that while DDQN has difficulty in handling multiple inputs and tends to have issues with convergence, the TD3 is the most stable and efficient, and the SAC is more advantageous in searching for various states. The acquired pulse evolution diagrams of the mode-locked states also have confirmed the feasibility of training ultrafast mode-locked fiber lasers with these DRL algorithms. Finally, an experimental ultrafast fiber laser system based on the active Ho:ZBLAN fiber and TD3 algorithm has been successfully demonstrated. © 2025 SPIE.

关键词： Frequency domain analysis

来源：评论

学校读者我要写书评

暂无评论

Compact cascaded semiconductor optical amplifiers based on reverse bias coupling

Compact cascaded semiconductor optical amplifiers based on r...

引用

2024 International Conference on Optoelectronic Materials and Devices, ICOMD 2024

作者： Li, Lihong Wu, Gaofeng Li, Heng Gu, Wenhua School of Microelectronics School of Integrated Circuits Nanjing University of Science and Technology Nanjing210096 China

ISBN: (数字)9781510689046

ISBN: (纸本)9781510689039

Typically, the most direct way to increase the gain of an SOA is to extend the cavity length of the SOA. As the cavity length increases, the chip ripple caused by reflections from the internal end faces of the SOA increases and may trigger self-excited excitation. An effective solution is to cascade multiple SOA chips and introduce an optical isolator between them, which prevents the self-excited excitation phenomenon and improves the gain performance. However, achieving efficient optical coupling between the chips is a key challenge. In this paper, a novel reverse bias coupling method is proposed, which can achieve simple and efficient optical coupling by applying reverse bias voltage between chips. This paper first introduces the principle and mechanism of reverse bias coupling, and demonstrates the advantages of this method in achieving efficient inter-chip optical coupling through theoretical and experimental analyses. Then, this paper carries out the experiment of cascade amplification of two SOAs, tests its performance in detail, and compares and analyses the relevant parameters with those of a single SOA. The experimental results show that the cascaded SOA structure using the reverse-bias voltage coupling method not only significantly improves the overall gain, but also effectively suppresses the self-excitation phenomenon. Compared with the traditional gain enhancement scheme, this method shows good application prospects in simplifying the packaging process and improving the gain performance. © 2025 SPIE.

关键词： Semiconductor optical amplifiers

来源：评论

学校读者我要写书评

暂无评论

Electromagnetic wave absorption and corrosion resistance performance of carbon nanoclusters/Ce-Mn codoped barium ferrite composite materials

引用

International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 699-709页

作者： Bo Li Lin Ma Sinan Li Jiewu Cui Xiaohui Liang Wei Sun Pengjie Zhang Nan Huang Song Ma Zhidong Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Metallurgy Engineering Liaoning Institute of Science and TechnologyBenxi 117004China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China Institute of Microelectronics Hangzhou Dianzi UniversityHangzhou 310018China BGRIMM Magnetic Materials&Technology Co. Ltd.Beijing 100160China

To realize the application of electromagnetic wave absorption(EWA)devices in humid marine environments,bifunctional EWA materials with better EWA capacities and anticorrosion properties have great exploration significance and systematic research *** utilizing the low-cost and excellent magnetic and stable chemical characteristics of barium ferrite(BaFe_(12)O_(19))and using the high dielectric loss and excellent chemical inertia of nanocarbon clusters,a new type of nanocomposites with carbon nanoclusters en-capsulating BaFe_(12)O_(19)was designed and synthesized by combining an impregnation method and a high-temperature calcination ***,Ce-Mn ions were introduced into the BaFe_(12)O_(19)lattice to improve the dielectric and magnetic properties of BaFe_(12)O_(19)cores significantly,and the energy band structure of the doped lattice and the orders of Ce replacing Fe sites were *** from Ce-Mn ion doping and carbon nanocluster encapsulation,the composite material exhibited excellent dual functionality of corrosion resist-ance and *** BaCe_(0.2)Mn_(0.3)Fe_(11.5)O_(19)-C(BCM-C)was calcined at 600°C,the minimum reflection loss of-20.1 dB was achieved at 14.43 *** Ku band’s effective absorption bandwidth of 4.25 GHz was achieved at an absorber thickness of only 1.3 *** BCM-C/polydimethylsiloxane coating had excellent corrosion resistance in the simulated marine environment(3.5wt%NaCl solution).The|Z|0.01Hz value of BCM-C remained at 106Ω·cm^(2)after 12 soaking *** successful preparation of the BaFe_(12)O_(19)composite en-capsulated with carbon nanoclusters provides new insights into the preparation of multifunctional absorbent materials and the fabrication of absorbent devices applied in humid marine environments in the future.

关键词： electromagnetic wave absorption anticorrosion barium ferrite cerium and manganese doping carbon nanoclusters

来源：评论

学校读者我要写书评

暂无评论

One Transistor−One Memristor Integrated Device Based on the Dual Conductive Filament Mechanism

引用

ACS Applied Electronic Materials 2025年第9期7卷 4095-4102页

作者： Zhao, Liang Pan, Zhidong Zhou, Yao Zhao, Tu Wu, Xuming Huo, Nengjie Guangdong Provincial Key Laboratory of Chip and Integration Technology School of Electronic Science and Engineering School of Microelectronics South China Normal University Foshan528225 China College of Physical Science and Technology Lingnan Normal University Zhanjiang524048 China

The memristors based on the mechanisms of oxygen vacancies or metal ion conduction filament face numerous challenges in terms of cycling stability, power consumption, and high-density integration. To address these challenges, a one transistor−one memristor (1T1R) architecture has been proposed, enabling the integration of data storage and information processing functions. Here, we have designed a 1T1R device combining a WSe2 transistor and an AlxOy/Ag memristor. The oxide AlxOy layer is grown by a thermal oxidation technique that facilitates the formation and disruption of a conductive filament via the synergistic effect of oxygen vacancies and Ag ions. Benefiting from the dual conductive filament mechanism, the device exhibits a low threshold voltage (∼0.82 V), high switching ratio (105), and good retention characteristics (>4000 s);it also demonstrates multilevel storage capability by the gate control on the WSe2 transistor component. This work develops a dual conductive filament-based 1T1R device, offering a device concept for future in-memory computing applications. © 2025 American Chemical Society.

关键词： Threshold voltage

来源：评论

学校读者我要写书评

暂无评论

Amplified spontaneous emission and photoresponse characteristics in highly defect tolerant CsPbClxBr3-x crystal

引用

Photonics Research 2025年第2期13卷 286-296页

作者： LONGXING SU BINGHENG MENG HENG LI ZHUO YU YUAN ZHU RUI CHEN International School of Microelectronics Dongguan University of Technology School of Microelectronics Southern University of Science and Technology State Key Laboratory of High Power Semiconductor Laser School of PhysicsChangchun University of Science and Technology Department of Electrical and Electronic Engineering Southern University of Science and Technology

All inorganic perovskite CsPbX3with excellent optical properties and a tunable bandgap is a potential candidate for optoelectronic applications,and the amplified spontaneous emission （ASE） is normally reported in lowdimensional structures where the quantum confinement enhances ***,we not only demonstrate the ASE in millimeter size CsPbClxBr3-xcrystal with a high defect concentration,but also tune the emission wavelength from the green band to blue band through the ion exchange of Br with *** ASE centered at456 nm is probed at 50 K with a threshold of 106μJ∕cm2.

关键词： Absorption coefficient Blue shift Optical imaging Optical properties Quantum confinement Tunable lasers

来源：评论

学校读者我要写书评

暂无评论

A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

引用

Nano Research 2025年第1期18卷 487-500页

作者： Wei Tian Quanyuan Feng Linbo Zhang Yinfan Liu Xian Jian Longjiang Deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism

来源：评论

学校读者我要写书评

暂无评论

Composition design of fullerene-based hybrid electron transport layer for efficient and stable wide-bandgap perovskite solar cells

引用

Journal of Energy Chemistry 2025年第3期102卷 172-178页

作者： Shuai Zeng Hui Wang Xiangyang Li Hailin Guo Linfeng Dong Chuanhang Guo Zhenghong Chen Jinpeng Zhou Yuandong Sun Wei Sun Liyan Yang Wei Li Dan Liu Tao Wang School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070HubeiChina School of Materials and Microelectronics Wuhan University of TechnologyWuhan 430070HubeiChina Key Laboratory of Textile Fiber and Products(Wuhan Textile University) Ministry of EducationWuhan 430200HubeiChina

Fullerene derivatives[6,6]-phenyl-C61-butyric acid methyl ester(PC_(61)BM)has been routinely used as the electron transport layer(ETL)in perovskite solar cells due to its suitable energy levels and good solution ***,its electron mobility and conductivity still need to be further enhanced for constructing high performance perovskite solar cells(PSCs).Herein,by doping the PC_(61)BM with a p-type polymer PM6 and n-type molecule ITIC,efficient wide-bandgap perovskite solar cells with improved efficiency and operational/storage stability are *** spectroscopy and electric measurements indicate PM6 and ITIC can both passivate defects at the perovskite/ETL interface,meanwhile ITIC can elevate the Fermi level of PC_(61)BM to enhance conductivity and PM6 can improve the photo-induced electron mobility of the ETL,facilitating charge extraction and reducing charge *** the results,Cs_(0.17)FA_(0.83)Pb(I_(0.83)Br_(0.17))_(3)wide-bandgap PSCs with PM6:PC_(61)BM:ITIC as the ETL demonstrates a superior efficiency of 22.95%,compared to 20.89%of the PC_(61)BM assisted device.

关键词： Perovskite solar cells Fullerene Electron transport layer Composition

来源：评论

学校读者我要写书评

暂无评论

Atmospheric neutron single event effects for multiple convolutional neural networks based on 28-nm and 16-nm SoC

引用

Chinese Physics B 2025年第1期34卷 477-484页

作者： Xu Zhao Xuecheng Du Chao Ma Zhiliang Hu Weitao Yang Bo Zheng School of Nuclear Science and Technology University of South ChinaHengyang 421001China Spallation Neutron Source Science Center Dongguan 523000China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China School of Microelectronics Xidian UniversityXi’an 710071China

The single event effects(SEEs)evaluations caused by atmospheric neutrons were conducted on three different convolutional neural network(CNN)models(Yolov3,MNIST,and ResNet50)in the atmospheric neutron irradiation spectrometer(ANIS)at the China Spallation Neutron Source(CSNS).The Yolov3 and MNIST models were implemented on the XILINX28-nm system-on-chip(So C).Meanwhile,the Yolov3 and ResNet50 models were deployed on the XILINX 16-nm Fin FET Ultra Scale+*** atmospheric neutron SEEs on the tested CNN systems were comprehensively evaluated from six aspects,including chip type,network architecture,deployment methods,inference time,datasets,and the position of the anchor *** various types of SEE soft errors,SEE cross-sections,and their distribution were analyzed to explore the radiation sensitivities and rules of 28-nm and 16-nm *** current research can provide the technology support of radiation-resistant design of CNN system for developing and applying high-reliability,long-lifespan domestic artificial intelligence chips.

关键词： single event effects atmospheric neutron system on chip convolutional neural network

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：