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    • 2. 发明申请
    • NANOWIRE PHOTODETECTOR AND IMAGE SENSOR WITH INTERNAL GAIN
    • NANOWIRE光电和图像传感器内部增益
    • WO2008143727A2
    • 2008-11-27
    • PCT/US2008002529
    • 2008-02-26
    • UNIV CALIFORNIAWANG DELISOCI CESARELO YU-HWAZHANG ARTHURAPLIN DAVIDWANG LINGQUANDAYEH SHADIBAO XIN YU
    • WANG DELISOCI CESARELO YU-HWAZHANG ARTHURAPLIN DAVIDWANG LINGQUANDAYEH SHADIBAO XIN YU
    • H01L27/146
    • H01L31/035227B82Y20/00H01L27/14643H01L31/035236
    • A practical ID nanowire photodetector with high gain that can be controlled by a radial electric field established in the ID nanowire. A ID nanowire photodetector device of the invention includes a nanowire that is individually contacted by electrodes for applying a longitudinal electric field which drives the photocurrent. An intrinsic radial electric field to the nanowire inhibits photo-carrier recombination, thus enhancing the photocurrent response. The invention further provides circuits of ID nanowire photodetctors, with groups of photodetctors addressed by their individual ID nanowires electrode contacts. The invention also provides a method for placement of ID nanostructures, including nanowires, with registration onto a substrate. A substrate is patterned with a material, e.g., photoresist, and trenches are formed in the patterning material at predetermined locations for the placement of ID nanostructures. The ID nanostructures are aligned in a liquid suspension, and then transferred into the trenches from the liquid suspension. Removal of the patterning material places the ID nanostructures in predetermined, registered positions on the substrate.
    • 具有高增益的实用的ID纳米线光电探测器,其可以通过在ID纳米线中建立的径向电场来控制。 本发明的ID纳米线光电探测器器件包括一个纳米线,该纳米线被电极单独接触,用于施加驱动光电流的纵向电场。 对纳米线的固有径向电场抑制光载流子复合,从而增强光电流响应。 本发明还提供了ID纳米线光电子器件的电路,其具有由它们的各自的ID纳米线电极接触器寻址的光电子束组。 本发明还提供了一种用于将ID纳米结构(包括纳米线)放置在衬底上的方法。 用诸如光致抗蚀剂的材料对衬底进行图案化,并且在图案化材料中在预定位置形成沟槽以放置ID纳米结构。 将ID纳米结构在液体悬浮液中排列,然后从液体悬浮液转移到沟槽中。 去除图案形成材料将ID纳米结构放置在基板上的预定的注册位置。
    • 3. 发明申请
    • NANOWIRE ARRAY-BASED LIGHT EMITTING DIODES AND LASERS
    • 基于阵列的发光二极管和激光器
    • WO2008140611A3
    • 2009-04-30
    • PCT/US2007088001
    • 2007-12-18
    • UNIV CALIFORNIAWANG DELIBAO XINYUXIANG BIN
    • WANG DELIBAO XINYUXIANG BIN
    • H01L33/18H01L33/24
    • H01L33/18B82Y20/00B82Y30/00H01L33/24H01S5/1042H01S5/183H01S5/423
    • Semiconductor nanowire arrays are used to replace the conventional planar layered construction for fabrication of LEDs and laser diodes. The nanowire arrays are formed from III-V or II-VI compound semiconductors on a conducting substrate. For fabrication of the device, an electrode layer is deposited on the substrate, a core material of one of a p-type and n-type compound semiconductor material is formed on top of the electrode as a planar base with a plurality of nanowires extending substantially vertically therefrom. A shell material of the other of the p-type and n-type compound semiconductor material is formed over an outer surface of the core material so that a p-n junction is formed across the planar base and over each of the plurality of nanowires. An electrode coating is formed an outer surface of the shell material for providing electrical contact to a current source. Heterostructures and superlattices grown along the lengths of the nanowires allow the confinement of photons in the quantum well to enhance the efficiency and as well as color tuning.
    • 半导体纳米线阵列用于替代用于制造LED和激光二极管的常规平面分层结构。 纳米线阵列由导电衬底上的III-V或II-VI化合物半导体形成。 为了制造器件,在衬底上沉积电极层,在电极顶部形成p型和n型化合物半导体材料之一的芯材作为平面基底,其中多个纳米线基本上延伸 垂直地。 p型和n型化合物半导体材料中的另一种的外壳材料形成在芯材的外表面上,从而跨平面基底和多个纳米线中的每一个形成p-n结。 电极涂层形成外壳材料的外表面,用于提供与电流源的电接触。 沿着纳米线的长度生长的异质结构和超晶格允许光子在量子阱中的约束以提高效率以及颜色调整。
    • 6. 发明申请
    • ELECTRON INJECTION NANOSTRUCTURED SEMICONDUCTOR MATERIAL ANODE ELECTROLUMINESCENCE METHOD AND DEVICE
    • 电子注入纳米结构半导体材料阳极电致发光方法和器件
    • WO2010065860A2
    • 2010-06-10
    • PCT/US2009066782
    • 2009-12-04
    • UNIVERITY OF CALIFORNIAWANG DELI
    • WANG DELI
    • H05B33/00
    • H01J63/06H01L33/502
    • Embodiments of the invention include methods and devices for producing light by injecting electrons from field emission cathode across a gap into nanostructured semiconductor materials, electrons issue from a separate field emitter cathode and are accelerated by a voltage across a gap towards the surface of the nanostructured material that forms part of the anode. At the nanostructure material, the electrons undergo electron-hole (e-h) recombination resulting in electroluminescent (EL) emission. In a preferred embodiment lighting device, a vacuum enclosure houses a field emitter cathode. The vacuum enclosure also houses an anode that is separated by a gap from said cathode and disposed to receive electrons emitted from the cathode. The anode includes semiconductor light emitting nano structures that accept injection of electrons from the cathode and generate photons in response to the injection of electrons. External electrode contacts permit application of a voltage differential across the anode and cathode to stimulate electron emissions from the cathode and resultant photon emissions from the semiconductor light emitting nanostructures of the anode. Embodiments of the invention also include the usage of nanostructured semiconductor materials as phosphors for conventional planar LED and nanowire array light emitting diodes and CFL. For the use in conventional planar LEDs, the nanostructures may take the form of quantum dots, nanotubes, branched tree-like nanostructure, nanoflower, tetrapods, tripods, axial heterostructures nanowires hetero structures.
    • 本发明的实施例包括通过从场发射阴极将电子从间隙注入到纳米结构化半导体材料中来产生光的方法和装置,电子从单独的场发射极阴极发出并且通过跨越纳米结构材料表面的间隙的电压加速 形成阳极的一部分。 在纳米结构材料上,电子经历电子 - 空穴(e-h)复合,产生电致发光(EL)发射。 在优选实施例的照明装置中,真空外壳容纳场致发射极阴极。 真空外壳还容纳阳极,该阴极与所述阴极间隔开并被设置成接收从阴极发射的电子。 阳极包括接受从阴极注入电子并响应于电子注入而产生光子的半导体发光纳米结构。 外部电极触点允许在阳极和阴极之间施加电压差以刺激来自阴极的电子发射以及来自阳极的半导体发光纳米结构的光子发射。 本发明的实施例还包括纳米结构半导体材料作为用于常规平面LED和纳米线阵列发光二极管和CFL的磷光体的用途。 对于在常规平面LED中的使用,纳米结构可以采取量子点,纳米管,支化树状纳米结构,纳米花,四脚架,三脚架,轴向异质结构纳米线异质结构的形式。