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    • 4. 发明申请
    • HIGHLY N-TYPE AND P-TYPE CO-DOPING SILICON FOR STRAIN SILICON APPLICATION
    • 用于应变硅应用的高N型和P型共掺硅
    • US20100117154A1
    • 2010-05-13
    • US12270700
    • 2008-11-13
    • ZHIYUAN YE
    • ZHIYUAN YE
    • H01L27/088H01L21/336
    • H01L21/823807H01L21/26513H01L21/823814H01L29/665H01L29/6659H01L29/66628H01L29/66636H01L29/7833H01L29/7848
    • A semiconductor device includes a gate, a source region and a drain region that are co-doped to produce a strain in the channel region of a transistor. The co-doping can include having a source and drain region having silicon that includes boron and phosphorous or arsenic and gallium. The source and drain regions can include co-dopant levels of more than 1020 atom/cm3. The source region and drain region each can be co-doped with more boron than phosphorous or can be co-doped with more phosphorous than boron. Alternatively, the source region and drain region each can be co-doped with more arsenic than gallium or can be co-doped with more gallium than arsenic. A method of manufacturing a semiconductor device includes forming a gate on top of a substrate and over a nitrogenated oxide layer, etching a portion of the substrate and nitrogenated oxide layer to form a recessed source region and a recessed drain region, filling the recessed source region and the recessed drain region with a co-doped silicon compound. The co-doped silicon compound can include silicon, boron and phosphorous or can include silicon, arsenic and gallium. The co-doped silicon compound can be epitaxially grown in the recesses.
    • 半导体器件包括共掺杂以在晶体管的沟道区中产生应变的栅极,源极区和漏极区。 共掺杂可以包括具有包含硼和磷或砷和镓的硅的源极和漏极区域。 源区和漏区可以包括超过1020原子/ cm3的共掺杂剂水平。 源极区域和漏极区域可以与磷共掺杂多于硼,或者可以掺杂比硼更多的磷。 或者,源极区域和漏极区域可以与镓共掺杂砷,或者可以与砷共掺杂更多的镓。 一种制造半导体器件的方法包括在衬底的顶部和氮化氧化物层上形成栅极,蚀刻衬底的一部分和氮化氧化物层,以形成凹入的源极区域和凹陷的漏极区域,填充凹陷的源极区域 和具有共掺杂硅化合物的凹陷漏极区。 共掺硅化合物可以包括硅,硼和磷,或者可以包括硅,砷和镓。 共掺杂硅化合物可以在凹槽中外延生长。