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    • 1. 发明申请
    • Semiconductor material having bipolar transistor structure and semiconductor device using same
    • 具有双极晶体管结构的半导体材料和使用其的半导体器件
    • US20060180833A1
    • 2006-08-17
    • US10539006
    • 2003-12-16
    • Akira InoueMasahiko HataYasuyuki Kurita
    • Akira InoueMasahiko HataYasuyuki Kurita
    • H01L31/109
    • H01L29/7371H01L29/0821
    • In an epitaxial substrate (20) comprising a collector layer (22), a base layer (23) and an emitter layer (24) formed on a semi-insulating GaAs substrate (21), a hole barrier layer (22C) is provided in the collector layer (22) to prevent influx of holes from the base layer (23), whereby the flow of collector current is suppressed when the collector current density rises and electron velocity is saturated, suppressing thermal runaway of the collector current without a ballast resistance or the like. Also, thermal runaway of the collector current is suppressed by providing an additional layer (2C) for generating, in the conduction band, an electron barrier by means of electrons accumulated in the collector layer (2) when the collector current density rises.
    • 在包括集电极层(22),形成在半绝缘GaAs衬底(21)上的基极层(23)和发射极层(24))的外延衬底(20)中,提供了空穴阻挡层(22C) 在集电体层(22)中,为了防止从基底层(23)流入空穴,由此当集电极电流密度上升,电子速度饱和时,集电极电流的流动受到抑制,抑制了没有镇流器的集电极电流的热失控 电阻等。 此外,通过设置用于在集电极电流密度上升时通过积聚在集电极层(2)中的电子在导带中产生电子势垒的附加层(2C)来抑制集电极电流的热失控。