共查询到19条相似文献,搜索用时 93 毫秒
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制作单晶半导体材料的方法由以下部分组成:提供模板材料;在模板材料上覆盖掩膜;用掩膜在模板材料内形成纳米结构的多元化;向纳米结构生长单晶半导体材料 相似文献
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近年来半导体材料主要朝两个方向发展:一方面是材料工程,即通过不断探索扩展新的半导体材料实现;另一方面是能带工程,即通过改变已知材料的维度进而实现能带的调节。准零维半导体量子点就是通过改变其尺寸调控能带的典型代表。主要论述了准零维量子点激光器发展过程中遇到的一些瓶颈问题。 相似文献
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程思琪 《固体电子学研究与进展》1985,(2)
<正>SEMI(Semiconductor Equipment and Materials Institute)——半导体设备及材料协会,1970年成立于美国加里福尼亚州,该协会的宗旨是开展以半导体设备及材料为主要内容的展览、贸易、技术交流等活动,交流世界半导体设备、材料及产品的现状和动向,促进半导体工业的发展. 相似文献
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半导体材料研究的新进展 总被引:7,自引:0,他引:7
首先对作为现代信息社会的核心和基础的半导体材料在国民经济建设、社会可持续发展以及国家安全中的战略地位和作用进行了分析,进而介绍几种重要半导体材料如,硅材料、GaAs和InP单晶材料、半导体超晶格和量子阱材料、一维量子线、零维量子点半导体微结构材料、宽带隙半导体材料、光学微腔和光子晶体材料、量子比特构造和量子计算机用材料等目前达到的水平和器件应用概况及其发展趋势作了概述.最后,提出了发展我国半导体材料的建议.本文未涉及II-VI族宽禁带与II-VI族窄禁带红外半导体材料、高效太阳电池材料Cu(In,Ga)Se.CuIn(Se,S)等以及发展迅速的有机半导体材料等. 相似文献
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Wen-Jun Niu Jin-Zhong He Bing-Ni Gu Mao-Cheng Liu Yu-Lun Chueh 《Advanced functional materials》2021,31(35):2103558
Transition metal single-atom catalysts (SACs) are currently a hot area of research in the field of electrocatalytic oxygen reduction reaction (ORR). In this review, the recent advances in transition metal single-atom supported by 2D materials as catalysts for ORR with high performance are reported. Due to their large surface area, uniformly exposed lattice plane, and adjustable electronic state, 2D materials are ideal supporting materials for exploring ORR active sites and surface reactions. The rational design principles and synthetic strategies of transition metal SACs supported by 2D materials are systematically introduced while the identification of active sites, their possible catalytic mechanisms as well as the perspectives on the future of transition metal SACs supported by 2D materials for ORR applications are discussed. Finally, according to the current development trend of ORR catalysts, the future opportunities and challenges of transition metal SACs supported by 2D materials are summarized. 相似文献
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在辐射环境中,电子系统常用的半导体器件及电路会出现不同程度的性能退化,甚至发生失效.其根本原因来源于辐射致组成半导体器件的材料内部缺陷的产生和积累.表征和分析辐射致材料内部缺陷的种类、浓度、分布等信息,是半导体材料辐射效应研究的重要内容.从辐射致缺陷微观形貌、结构特征,及其引起的宏观电效应三方面,归纳总结了几种重要的半导体材料辐射效应的表征和分析方法,分析了每种方法的优缺点及适用范围,并指出半导体材料辐射效应表征与分析技术发展的方向,可为电子器件、半导体材料辐射效应领域的研究人员提供参考. 相似文献
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Bo‐Quan Li Shu‐Yuan Zhang Xiang Chen Chen‐Yu Chen Zi‐Jing Xia Qiang Zhang 《Advanced functional materials》2019,29(29)
Organic framework materials constructed by covalently linking organic building blocks into framework structures are highly regarded as paragons to precisely control the material structure at the atomic level. Herein, a direct synthesis methodology is proposed as a guidance for the bulk synthesis of organic framework materials. Framework porphyrin (POF) materials are one‐pot synthesized to demonstrate the advances of the direct synthesis methodology. The as‐synthesized POF materials are intrinsically 2D and exhibit impressive versatility in composition, structure, morphology, and function, delivering a free‐standing POF film, hybrids of POF and nanocarbon, and cobalt‐coordinated POF. When applied as electrocatalysts for oxygen reduction reaction and oxygen evolution reaction, the cobalt‐coordinated POF exhibits excellent bifunctional electrocatalytic performances comparable with noble‐metal‐based electrocatalysts. The direct synthesis methodology and resultant POF materials demonstrate the ability of controlling materials at the atomic level for energy electrocatalysis. 相似文献
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红外探测系统的快速发展促进了对红外隐身材料的广泛研究。红外隐身材料主要是对目标的红外辐射能进行调控,主要措施是控制目标表面红外发射率和目标表面温度,使目标与背景环境的辐射能相融合,进而达到隐身的目的。概述了红外隐身的基本原理,综述了低发射率涂层材料、控温涂层材料和智能隐身材料等红外隐身材料近几年的国内外研究现状,并展望了红外隐身材料的未来。 相似文献
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Dielectric materials, devices, and circuits 总被引:6,自引:0,他引:6
Fiedziuszko S.J. Hunter I.C. Itoh T. Kobayashi Y. Nishikawa T. Stitzer S.N. Wakino K. 《Microwave Theory and Techniques》2002,50(3):706-720
Dielectric materials are continuing to play a very important role in the microwave communication systems. These materials are key in realization of low-loss temperature-stable resonators and filters for satellite and broadcasting equipment, and in many other microwave devices. High dielectric-constant materials are critical to the miniaturization of wireless systems, both for the terminals and base-stations, as well as for handsets. In this paper, a sequential evolution of the dielectric materials applications in microwave devices will be reviewed. This includes dielectric waveguides, low-loss temperature-stable ceramic materials, dielectric resonators, and filters. The recent advances in the multilayer circuit modules, dielectric antennas, and ferroelectrics are also described 相似文献
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综述了离子束科学技术领域新的重要进展--从作为半导体掺杂手段的低剂量离子注入到高剂量离子注入合成新材料的离子束合成技术,讨论了高剂量注入的物理效应,介绍了利用高剂量氧注入硅合成SIMOX材料的物理过程以及SIMOX技术的多种应用,提出了提高SIMOX材料性能的各种途径。 相似文献