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    • 66. 发明申请
    • Transistor Having Graphene Base
    • 晶体管有石墨烯基
    • US20120068157A1
    • 2012-03-22
    • US13238728
    • 2011-09-21
    • Francis J. Kub
    • Francis J. Kub
    • H01L29/15H01L29/737B82Y99/00
    • H01L29/7376B82Y10/00H01L29/1004H01L29/157H01L29/1606H01L29/1608H01L29/66037H01L29/66068H01L29/7371
    • A transistor device having a graphene base for the transport of electrons into a collector is provided. The transistor consists of a heterostructure comprising an electron emitter, an electron collector, and a graphene material base layer consisting of one or more sheets of graphene situated between the emitter and the collector. The transistor also can further include an emitter transition layer at the emitter interface with the base and/or a collector transition layer at the base interface with the collector. The electrons injected into the graphene material base layer can be “hot electrons” having an energy E substantially greater than EF, the Fermi energy in the graphene material base layer or can be “non-hot electrons” having an energy E approximately equal to than EF. The electrons can have the properties of ballistic transit through the base layer.
    • 提供具有用于将电子输送到集电器中的石墨烯基底的晶体管器件。 晶体管由包含电子发射体,电子收集器和由位于发射极和集电极之间的一层或多层石墨烯组成的石墨烯材料基底层的异质结构构成。 晶体管还可以在与集电极的基极界面处的基极和/或集电极过渡层的发射极接口处进一步包括发射极过渡层。 注入到石墨烯材料基底层中的电子可以是具有基本上大于EF的能量E的“热电子”,石墨烯材料基底层中的费米能量或者可以是具有等于E的能量E的“非热电子” EF。 电子可以具有穿过基层的弹道转运的性质。
    • 68. 发明申请
    • Transistor Based on Resonant Tunneling Effect of Double Barrier Tunneling Junctions
    • 基于双阻挡隧道结共振隧穿效应的晶体管
    • US20080246023A1
    • 2008-10-09
    • US11663684
    • 2005-04-08
    • Zhongming ZengXiufeng HanJiafeng FengTianxing WangGuanxiang DuFeifei LiWenshan Zhan
    • Zhongming ZengXiufeng HanJiafeng FengTianxing WangGuanxiang DuFeifei LiWenshan Zhan
    • H01L29/06H01L27/082
    • H01L29/66984B82Y10/00H01L29/7376
    • The present invention relates to a transistor based on resonant tunneling effect of double barrier tunneling junctions comprising: a substrate, an emitter, a base, a collector and a first and a second tunneling barrier layers; wherein the first tunneling barrier layer is located between the emitter and the base, and the second tunneling barrier layer is located between the base and the collector; furthermore, the junction areas of the tunneling junctions which are formed between the emitter and the base and between the base and collector respectively are 1 μm2˜10000 μm2; the thickness of the base is comparable to the electron mean free path of material in the layer; the magnetization orientation is unbounded in one and only one pole of said emitter, base and collector. Because the double-barrier structure is used, it overcomes the Schottky potential between the base and the collector. Wherein the base current is a modulating signal, the collector signal is modulated to be similar to the base current's modulating mode by changing the magnetization orientation of the base or the collector, i.e., the resonant tunneling effect occurs. An amplified signal can be obtained under the suitable conditions.
    • 本发明涉及一种基于双阻挡隧道结的谐振隧道效应的晶体管,包括:衬底,发射极,基极,集电极和第一和第二隧道势垒层; 其中所述第一隧道势垒层位于所述发射极和所述基极之间,并且所述第二隧穿势垒层位于所述基极和所述集电极之间; 此外,形成在发射极和基极之间以及基极和集电极之间的隧道结的接合面分别为1μm2〜10000μm2。 基底的厚度与层中材料的电子平均自由程相当; 磁化方向在所述发射极,基极和集电极的一个且仅一个极中是无界的。 因为使用双重阻挡结构,它克服了基极和集电极之间的肖特基电位。 其中基极电流是调制信号,通过改变基极或集电极的磁化取向,即发生谐振隧穿效应,将集电极信号调制成与基极电流的调制模式相似。 在合适的条件下可以获得放大的信号。