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    • 7. 发明申请
    • VERTICAL SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING SUCH DEVICES
    • 垂直半导体器件及其制造方法
    • WO2006025035A3
    • 2006-08-24
    • PCT/IB2005052873
    • 2005-09-01
    • KONINKL PHILIPS ELECTRONICS NVROCHEFORT CHRISTELLEHIJZEN ERWIN AMEUNIER-BEILLARD PHILIPPE
    • ROCHEFORT CHRISTELLEHIJZEN ERWIN AMEUNIER-BEILLARD PHILIPPE
    • H01L29/78H01L21/205H01L21/336H01L29/06
    • H01L29/7813H01L29/0634H01L29/0649H01L29/0653H01L29/66712H01L29/7802
    • A vertical semiconductor device, for example a trench-gate MOSFET power transistor (1), has a drift region (12) of one conductivity type containing spaced vertical columns (30) of the opposite conductivity type for charge compensation increase of the device breakdown voltage. Insulating material (31) is provided on the sidewalls only of trenches (20) in the drift region (12) and the opposite conductivity type material is epitaxially grown from the bottom of the trenches (20). The presence of the sidewall insulating material (31) prevents any defects in the charge compensation columns crossing into the drain drift material which therefore prevents any excessive leakage currents in the device (1). The insulating material (31) also prevents epitaxial growth on the trench sidewalls and hence substantially prevents forming voids in the trenches which would lessen the accuracy of charge compensation. The epitaxial growth by this method can be well controlled and may be stopped at an upper level (21) below the top major surface (10a). Thus, for example,20 trench-gates 22, 23 may be formed in the same trenches (20) above the compensation columns (30).
    • 垂直半导体器件,例如沟槽栅MOSFET功率晶体管(1)具有一个导电类型的漂移区域(12),其包含相反导电类型的间隔的垂直列(30),用于器件击穿电压的电荷补偿增加 。 绝缘材料(31)仅设置在漂移区域(12)中的沟槽(20)的侧壁上,并且相反的导电型材料从沟槽(20)的底部外延生长。 侧壁绝缘材料(31)的存在防止了电荷补偿列中穿过漏极漂移材料的任何缺陷,从而防止了器件(1)中的任何过多的漏电流。 绝缘材料(31)还防止沟槽侧壁上的外延生长,从而基本上防止在沟槽中形成空穴,这将降低电荷补偿的精度。 通过该方法的外延生长可以很好地控制,并且可以在顶部主表面(10a)下方的上层(21)处停止。 因此,例如,可以在补偿柱(30)上方的相同沟槽(20)中形成20个沟槽栅极22,23。
    • 10. 发明申请
    • SEMICONDUCTOR DEVICE WITH A BIPOLAR TRANSISTOR AND METHOD OF MANUFACTURING SUCH A DEVICE
    • 具有双极晶体管的半导体器件及其制造方法
    • WO2007036861A3
    • 2007-09-27
    • PCT/IB2006053446
    • 2006-09-22
    • NXP BVMEUNIER-BEILLARD PHILIPPEDUFFY RAYMOND JAGARWAL PRABHATHURKX GODEFRIDUS A M
    • MEUNIER-BEILLARD PHILIPPEDUFFY RAYMOND JAGARWAL PRABHATHURKX GODEFRIDUS A M
    • H01L29/737H01L21/331H01L29/08
    • H01L29/7378H01L29/0817H01L29/66242
    • The invention relates to a semiconductor device (10) with a substrate and a semiconductor body of silicon comprising a bipolar transistor with an emitter region (1), a base region (2) and a collector region (3) which are respectively of the N-type conductivity, the P-type conductivity and the N-type conductivity by the provision of suitable doping atoms, wherein the base region (2) comprises a mixed crystal of silicon and germanium, the base region (2) is separated from the emitter region by an intermediate region (22) of silicon having a doping concentration which is lower than the doping concentration of the emitter region (1) and with a thickness smaller than the thickness of the emitter region (1) and the emitter region (1) comprises a sub-region comprising a mixed crystal of silicon and germanium which is positioned at the side of emitter region (1) remote from the intermediate region (22). According to the invention, the sub-region comprising the mixed crystal of silicon and germanium extend substantially through the whole emitter region (1) up to the interlace with the intermediate region (22) and the doping atoms of the emitter region (1) are arsenic atoms. Such a device has a very steep n-type doping profile (50) and a very steep p- type doping profile (20) at or within the intermediate region (22) and thus excellent high- frequency behavior with a high cut-off frequency (fr). Preferably the emitter region (1) is doped with an arsenic implantation (I) in its upper half, the final doping profile being formed after an RTA. The invention also comprises a method of manufacturing a device (10) according to the invention.
    • 本发明涉及一种具有衬底和硅半导体本体的半导体器件(10),其包括具有发射极区(1),基极区(2)和集电极区(3)的双极晶体管,所述发射极区分别为N 通过提供合适的掺杂原子,P型导电性和P型导电性和N型导电性,其中基区(2)包括硅和锗的混合晶体,基极区(2)与发射极 通过具有低于发射极区域(1)的掺杂浓度的掺杂浓度并且具有小于发射极区域(1)和发射极区域(1)的厚度的厚度的硅的中间区域(22) 包括位于远离中间区域(22)的发射极区域(1)侧的硅和锗的混合晶体的子区域。 根据本发明,包括硅和锗的混合晶体的子区域基本上延伸穿过整个发射极区域(1)直到与中间区域(22)交错,并且发射极区域(1)的掺杂原子是 砷原子 这种器件在中间区域(22)处或中间区域(22)内具有非常陡的n型掺杂分布(50)和非常陡的p型掺杂分布(20),因此具有高截止频率的优异的高频特性 (FR)。 优选地,发射极区域(1)在其上半部分掺杂有砷注入(I),最后的掺杂分布在RTA之后形成。 本发明还包括一种制造根据本发明的装置(10)的方法。