共查询到20条相似文献，搜索用时 171 毫秒
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正专家简介:谢自力,南京大学电子科学与工程学院教授,南京南大光电工程研究院有限公司总经理。主要从事氮化物半导体材料MOCVD生长、器件结构设计、GaN基紫外光电探测器和太阳电池的结构设计与器件研发工作。"九五"期间,曾任原"863"计划半导体材料领域GaAs单晶材料评审专家。在InN材料、GaN基紫外探测器、InGaN太阳能电池研究以及氮化物发光二极管研究等领域分别取得了国际先进水平的研究成果。 相似文献
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GaN(氮化镓)时代即将到来
在当今半导体材料与器件的研究与应用中,GaN(氮化镓)系材料日益成为世人瞩目的焦点,并和SiC、ZeSe、ZeO、金刚石等半导体材料并誉为继以Si和GaAs为代表的第一代、第二代半导体材料之后的第三代半导体材料.以GaN为代表的Ⅲ-Ⅴ族化合物材料为直接跃迁半导体材料,包括AlN、GaN和InN及以此为基础的三元合金AlGaN、InGaN、四元合金(AllnGaN)材料.…… 相似文献
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新一代半导体材料新贵GAN 总被引：1，自引：0，他引：1
6aN（氮化镓）时代即将到来 在当今半导体材料与器件的研究与应用中，GaN（氮化镓）系材料日益成为世人瞩目的焦点，并和SiC、ZeSe、ZeO、金刚石等半导体材料并誉为继以Si和GaAs为代表的第一代、第二代半导体材料之后的第三代半导体材料。以GaN为代表的Ⅲ-V族化合物材料为直接跃迁半导体材料， 相似文献
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王娜 《科技成果管理与研究》2021,16(6):6-7
量子信息科学是由物理科学与信息科学等多个学科交叉融合所形成的一门新兴前沿学科,在经济、社会乃至国防军工事业中发挥着重要的作用,已成为国家科技发展战略的重要组成部分.半导体光电子材料及其相关器件是发展量子信息科技的关键支撑之一,只有解决材料器件基础问题,才能掌握量子信息研究的主动权.宋海智教授长期致力于半导体光电子材料和器件等方面的开发,积累了丰富的量子信息研究经验. 相似文献
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Si基光电子集成已成为十分引入注目的研究课题，其工艺与CMOS工艺完全兼容．可以实现低成本的Si基光电子集成器件。本文综述近几年来Si基光电子集成器件的发展以及一些最新的研究进展，并对器件研制、发光机理和应用前景等方面做了详细的叙述。 相似文献
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《中国科学院院刊(英文版)》2008,22(4):204-204
Lithium batteries, as a main or back-up power source for mobile communication devices, portable electronic devices and the like, have attracted much attention in the scientific and industrial fields due to their high electromotive force and high energy density. To meet the demand for batteries with higher energy density and improved cycle characteristics in recent years, many attempts have been made to develop new electrode materials or design new structures of electrode materials. 相似文献
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Yong Cui Huifeng Yao Ling Hong Tao Zhang Yabing Tang Baojun Lin Kaihu Xian Bowei Gao Cunbin An Pengqing Bi Wei Ma Jianhui Hou 《国家科学评论(英文版)》2020,7(7):1239
The development of organic photoactive materials, especially the newly emerging non-fullerene electron acceptors (NFAs), has enabled rapid progress in organic photovoltaic (OPV) cells in recent years. Although the power conversion efficiencies (PCEs) of the top-performance OPV cells have surpassed 16%, the devices are usually fabricated via a spin-coating method and are not suitable for large-area production. Here, we demonstrate that the fine-modification of the flexible side chains of NFAs can yield 17% PCE for OPV cells. More crucially, as the optimal NFA has a suitable solubility and thus a desirable morphology, the high efficiencies of spin-coated devices can be maintained when using scalable blade-coating processing technology. Our results suggest that optimization of the chemical structures of the OPV materials can improve device performance. This has great significance in larger-area production technologies that provide important scientific insights for the commercialization of OPV cells. 相似文献
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氮化镓，是直接带隙半导体材料，在室温下有很宽的带隙（3.39eV）。它在光电子器件如蓝光、紫外、紫光等光发射二极管和激光二极管方面有着重要的应用。本文系统地介绍了氮化镓的各种制备方法，对其结构和性能关系的研究,揭示了它在半导体领域广泛且重要的应用前景。 相似文献
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《中国科学院院刊(英文版)》2004,18(1):6-6
Flexibility of polyelectrolyte nanotubes is necessary if they are to be exploited in applications such as developing photoelectric devices with strong mechanical properties. In a recent attempt, high flexibility has been observed from such nanotubes prepared by a research team headed by Prof. Li Junbai of the CAS Institute of Chemistry (ICCAS). 相似文献
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Xinyuan Zhang Lina Li Chengmin Ji Xitao Liu Qing Li Kun Zhang Yu Peng Maochun Hong Junhua Luo 《国家科学评论(英文版)》2021,8(10)
Polarization-sensitive photodetection is central to optics applications and has been successfully demonstrated in photodetectors of two-dimensional (2D) materials, such as layered hybrid perovskites; however, achieving high polarization sensitivity in such a photodetector remains extremely challenging. Here, for the first time, we demonstrate a high-performance polarization-sensitive photodetector using single-crystalline 2D/3D perovskite heterostructure, namely, (4-AMP)(MA)2Pb3Br10/MAPbBr3 (MA = methylammonium; 4-AMP = 4-(aminomethyl)piperidinium), which exhibits ultrahigh polarization sensitivity up to 17.6 under self-driven mode. To our knowledge, such a high polarization selectivity has surpassed all of the reported perovskite-based devices, and is comparable to, or even better than, the traditional inorganic heterostructure-based photodetectors. Further studies reveal that the built-in electric field formed at the junction can spatially separate the photogenerated electrons and holes, reducing their recombination rate and thus enhancing the performance for polarization-sensitive photodetection. This work provides a new source of polarization-sensitive materials and insights into designing novel optoelectronic devices. 相似文献
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Thiolene-based microfluidic devices have been coupled with surface plasmon resonance imaging (SPRI) to provide an integrated platform to study interfacial interactions in both aqueous and organic solutions. In this work, we develop a photolithographic method that interfaces commercially available thiolene resin to gold and glass substrates to generate microfluidic channels with excellent adhesion that leave the underlying sensor surface free from contamination and readily available for surface modification through self-assembly. These devices can sustain high flow rates and have excellent solvent compatibility even with several organic solvents. To demonstrate the versatility of these devices, we have conducted nanomolar detection of streptavidin-biotin interactions using in situ SPRI. 相似文献
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We describe a technology based on lamination that allows for the production of highly integrated 3D devices suitable for performing a wide variety of microfluidic assays. This approach uses a suite of microfluidic coupons (“microfloupons”) that are intended to be stacked as needed to produce an assay of interest. Microfloupons may be manufactured in paper, plastic, gels, or other materials, in advance, by different manufacturers, then assembled by the assay designer as needed. To demonstrate this approach, we designed, assembled, and characterized a microfloupon device that performs sodium-dodecyl-sulfate polyacrylamide gel electrophoresis on a small sample of protein. This device allowed for the manipulation and transport of small amounts of protein sample, tight injection into a thin polyacrylamide gel, electrophoretic separation of the proteins into bands, and subsequent removal of the gel from the device for imaging and further analysis. The microfloupons are rugged enough to handle and can be easily aligned and laminated, allowing for a variety of different assays to be designed and configured by selecting appropriate microfloupons. This approach provides a convenient way to perform assays that have multiple steps, relieving the need to design highly sophisticated devices that incorporate all functions in a single unit, while still achieving the benefits of small sample size, automation, and high speed operation. 相似文献
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超导材料是一种具有超导特性的新型材料,它在一定低温条件下能排斥磁力线并且呈现出电阻为零的现象。超导材料由于具有零电阻、完全抗磁性和超导隧道效应等优异的特性,高温超导材料的用途非常广阔,大致可分为三类:大电流应用、电子学应用和抗磁性应用。大电流应用即超导发电、输电和储能;电子学应用包括超导计算机、超导天线、超导器件等;抗磁性主要应用于磁悬浮列车和热核聚变反应堆等。 相似文献
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星上实时成像处理器是未来星载合成孔径雷达的重要组成部分，它可以进一步提高星载合成孔径雷达的性能，拓宽其应用。方位压缩处理是实时成像处理的核心。本文介绍了合成孔径雷达方位压缩处理的基本原理，并对星上实时成像处理器的系统参数进行了详细分析，提出了一种基于FPGA实现星载合成孔径雷达实时成像处理器中方位压缩处理的方法，完成了包括ISA接口、FFT运算、匹配滤波和复数取模在内的方位压缩处理器的设计。根据星上环境对器件的特殊要求，选用Xilinx的VirtexII系列FPGA进行硬件实现。对点目标仿真数据和实际数据的测试表明，该方法完全满足星上实时处理需求。 相似文献