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    • 34. 发明授权
    • Heterostructure including light generating structure contained in potential well
    • 含有发光结构的异质结构包含在势阱中
    • US07619238B2
    • 2009-11-17
    • US11539754
    • 2006-10-09
    • Remigijus GaskaMichael ShurJianping Zhang
    • Remigijus GaskaMichael ShurJianping Zhang
    • H01L31/00
    • H01L33/06B82Y20/00
    • A light emitting heterostructure and/or device in which the light generating structure is contained within a potential well is provided. The potential well is configured to contain electrons, holes, and/or electron and hole pairs within the light generating structure. A phonon engineering approach can be used in which a band structure of the potential well and/or light generating structure is designed to facilitate the emission of polar optical phonons by electrons entering the light generating structure. To this extent, a difference between an energy at a top of the potential well and an energy of a quantum well in the light generating structure can be resonant with an energy of a polar optical phonon in the light generating structure material. The energy of the quantum well can comprise an energy at the top of the quantum well, an electron ground state energy, and/or the like.
    • 提供了一种发光异质结构和/或其中发光结构被包含在势阱内的器件。 势阱被配置为在发光结构内容纳电子,空穴和/或电子和空穴对。 可以使用声子工程方法,其中将潜在阱和/或光产生结构的带结构设计为便于通过进入发光结构的电子发射极性光学声子。 在这种程度上,在发光结构材料中,势阱的顶部的能量与光产生结构中的量子阱的能量之间的差可以与极性光学声子的能量共振。 量子阱的能量可以包括量子阱顶部的能量,电子基态能量和/或类似物质。
    • 35. 发明授权
    • Nitride-based light emitting heterostructure
    • 基于氮化物的发光异质结构
    • US07537950B2
    • 2009-05-26
    • US11951607
    • 2007-12-06
    • Remigijus GaskaJianping ZhangMichael Shur
    • Remigijus GaskaJianping ZhangMichael Shur
    • H01L21/00
    • H01L33/06B82Y20/00H01L33/32H01S5/105H01S5/2009H01S5/3216H01S5/3407H01S5/3415H01S5/34333H01S5/34346
    • An improved nitride-based light emitting heterostructure is provided. The nitride-based light emitting heterostructure includes an electron supply layer and a hole supply layer with a light generating structure disposed there between. The light generating structure includes a set of barrier layers, each of which has a graded composition and a set of quantum wells, each of which adjoins at least one barrier layer. Additional features, such as a thickness of each quantum well, can be selected/incorporated into the heterostructure to improve one or more of its characteristics. Further, one or more additional layers that include a graded composition can be included in the heterostructure outside of the light generating structure. The graded composition layer(s) cause electrons to lose energy prior to entering a quantum well in the light generating structure, which enables the electrons to recombine with holes more efficiently in the quantum well.
    • 提供了一种改进的基于氮化物的发光异质结构。 氮化物系发光异质结构包括电子供给层和在其间设置有发光结构的空穴供给层。 光产生结构包括一组阻挡层,每个阻挡层具有梯度组成和一组量子阱,每个量子阱邻接至少一个势垒层。 附加特征,例如每个量子阱的厚度,可以选择/并入异质结构以改善其一个或多个特性。 此外,包括渐变组合物的一个或多个附加层可以包含在发光结构外部的异质结构中。 渐变的组成层在光生成结构中进入量子阱之前导致电子失去能量,这使得电子能够在量子阱中更有效地与空穴重新组合。
    • 36. 发明申请
    • ENHANCEMENT MODE INSULATED GATE HETEROSTRUCTURE FIELD-EFFECT TRANSISTOR
    • 增强型绝缘栅结构场效应晶体管
    • US20080203430A1
    • 2008-08-28
    • US11781338
    • 2007-07-23
    • Grigory SiminMichael ShurRemigijus Gaska
    • Grigory SiminMichael ShurRemigijus Gaska
    • H01L29/778
    • H01L29/7783H01L29/2003H01L29/402
    • Aspects of the present invention provide an enhancement mode (E-mode) insulated gate (IG) double heterostructure field-effect transistor (DHFET) having low power consumption at zero gate bias, low gate currents, and/or high reliability. An E-mode HFET in accordance with an embodiment of the invention includes: top and bottom barrier layers; and a channel layer sandwiched between the bottom and the top barrier layers, wherein the bottom and top barrier layers have a larger bandgap than the channel layer, and wherein polarization charges of the bottom barrier layer deplete the channel layer and polarization charges of the top barrier layer induce carriers in the channel layer; and wherein a total polarization charge in the bottom barrier layer is larger than a total polarization charge in the top barrier layer such that the channel layer is substantially depleted at zero gate bias.
    • 本发明的方面提供了一种在零栅极偏压,低栅极电流和/或高可靠性下具有低功耗的增强模式(E模式)绝缘栅(IG)双异质结构场效应晶体管(DHFET)。 根据本发明的实施例的E型HFET包括:顶部和底部阻挡层; 以及夹在底部和顶部阻挡层之间的沟道层,其中底部和顶部势垒层具有比沟道层更大的带隙,并且其中底部势垒层的极化电荷消耗沟道层和顶部势垒的极化电荷 层在沟道层中诱导载流子; 并且其中底部阻挡层中的总极化电荷大于顶部势垒层中的总极化电荷,使得沟道层在零栅极偏压下基本上耗尽。
    • 38. 发明申请
    • Inverted nitride-based semiconductor structure
    • 反向氮化物基半导体结构
    • US20050087752A1
    • 2005-04-28
    • US10974512
    • 2004-10-26
    • Michael ShurRemigijus Gaska
    • Michael ShurRemigijus Gaska
    • H01L29/20H01L29/778H01L33/00
    • H01L29/7783H01L29/2003
    • A nitride-based semiconductor structure is provided. The structure includes an active layer that comprises an inverted quantum well structure that includes Indium and Nitrogen. The structure can be used to create a field effect transistor. In this case, the active layer forms an inverted active device channel. By including Indium and forming the inverted active device channel, a device having improved performance characteristics can be manufactured. Further, additional improvements, such as one or more additional layers, a second gate contact, and/or one or more field plates can be included in the device to obtain the desired performance characteristics.
    • 提供了一种氮化物基半导体结构。 该结构包括有源层,其包括反向量子阱结构,其包括铟和氮。 该结构可用于产生场效应晶体管。 在这种情况下,有源层形成反向的有源器件通道。 通过包括铟并形成反向的有源器件沟道,可以制造具有改进的性能特性的器件。 此外,可以在该装置中包括额外的改进,例如一个或多个附加层,第二栅极接触和/或一个或多个场板以获得期望的性能特征。