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    • 1. 发明申请
    • Bipolar transistor with graded base layer
    • 具有分级基极层的双极晶体管
    • US20050139863A1
    • 2005-06-30
    • US10969804
    • 2004-10-20
    • Roger WelserPaul DeLucaCharles LutzKevin StevensNoren Pan
    • Roger WelserPaul DeLucaCharles LutzKevin StevensNoren Pan
    • H01L21/331H01L29/10H01L29/20H01L29/737H01L31/0328
    • H01L29/1004H01L29/2003H01L29/66318H01L29/7371
    • A semiconductor material which has a high carbon dopant concentration includes gallium, indium, arsenic and nitrogen. The disclosed semiconductor materials have a low sheet resistivity because of the high carbon dopant concentrations obtained. The material can be the base layer of gallium arsenide-based heterojunction bipolar transistors and can be lattice-matched to gallium arsenide emitter and/or collector layers by controlling concentrations of indium and nitrogen in the base layer. The base layer can have a graded band gap that is formed by changing the flow rates during deposition of III and V additive elements employed to reduce band gap relative to different III-V elements that represent the bulk of the layer. The flow rates of the III and V additive elements maintain an essentially constant doping-mobility product value during deposition and can be regulated to obtain pre-selected base-emitter voltages at junctions within a resulting transistor.
    • 具有高碳掺杂浓度的半导体材料包括镓,铟,砷和氮。 所公开的半导体材料由于获得的高碳掺杂剂浓度而具有低的薄层电阻率。 该材料可以是基于砷化镓的异质结双极晶体管的基极层,并且可以通过控制基极层中的铟和氮的浓度而与砷化镓发射极和/或集电极层晶格匹配。 基层可以具有渐变带隙,其通过改变用于减少相对于表示该层的主体的不同III-V元素的带隙的III和V添加元素的沉积期间的流速而形成。 III和V添加元素的流速在沉积期间保持基本恒定的掺杂迁移率产物值,并且可以调节以在所得晶体管内的结处获得预选的基极 - 发射极电压。
    • 2. 发明申请
    • Site Selection Data Analysis and System
    • 现场选择数据分析与系统
    • US20120221366A1
    • 2012-08-30
    • US13405636
    • 2012-02-27
    • Charles V. BowmanPaul DeLuca
    • Charles V. BowmanPaul DeLuca
    • G06Q10/00
    • G06Q10/04
    • A method for site selection data analysis, including providing a distributed computer network for site selection data analysis with a computer and a plurality of databases coupled to a computer network and providing an interface associated with a selected site location for receiving site selection data from the computer. The site selection data may include quantifiable values associated with business operating expenses. The method also includes selectively retrieving rates from a rate database, where the rates are updated dynamically and are selected based on the site location and site selection data. The method also includes providing an algorithm for calculating monthly and annual values of the site selection data and calculating a data set using the algorithm. The method also includes transmitting the data set to the computer to be displayed on a display device and storing the data set and site selection data on a data storage device.
    • 一种用于场地选择数据分析的方法,包括提供分布式计算机网络,用于与计算机和多个数据库相连的计算机和多个数据库的站点选择数据分析,并提供与所选站点位置相关联的接口,用于从计算机接收站点选择数据 。 站点选择数据可以包括与业务运营费用相关联的可量化值。 该方法还包括从速率数据库中选择性地检索速率,其中速率被动态地更新并且基于站点位置和站点选择数据被选择。 该方法还包括提供一种用于计算站点选择数据的月度和年度值并使用算法计算数据集的算法。 该方法还包括将数据集发送到计算机以显示在显示设备上,并将数据集和站点选择数据存储在数据存储设备上。