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    • 3. 发明申请
    • METHOD FOR FORMING A SEMICONDUCTOR DEVICE HAVING ABRUPT ULTRA SHALLOW EPI-TIP REGIONS
    • 形成具有超声波超低温区域的半导体器件的方法
    • US20090035911A1
    • 2009-02-05
    • US11830155
    • 2007-07-30
    • Willy RachmadySteven KeatingBernhard Sell
    • Willy RachmadySteven KeatingBernhard Sell
    • H01L21/336
    • H01L21/26506H01L21/823807H01L21/823814H01L29/165H01L29/66545H01L29/66628H01L29/66636H01L29/7833H01L29/7848
    • A method for forming a semiconductor device having abrupt ultra shallow epi-tip regions comprises forming a gate stack on a crystalline substrate, performing a first ion implantation process to amorphisize a first pair of regions of the substrate disposed adjacent to and on laterally opposite sides of the gate stack, forming a pair of spacers on the substrate disposed on laterally opposite sides of the gate stack, performing a second ion implantation process to amorphisize a second pair of regions of the substrate that are disposed on laterally opposite sides of the gate stack and adjacent to the spacers, applying a selective wet etch chemistry to remove the amorphisized first and second pair of regions and form a pair of cavities on laterally opposite sides of the gate stack, and depositing a silicon alloy in the pair of cavities to form source and drain regions and source and drain epi-tip regions.
    • 一种用于形成具有突变的超浅表面尖端区域的半导体器件的方法包括在晶体衬底上形成栅极堆叠,执行第一离子注入工艺以使位于邻近和相对侧两侧的衬底的第一对区域非晶化 所述栅堆叠在所述衬底上形成一对间隔物,所述衬底设置在所述栅堆叠的横向相对侧上,执行第二离子注入工艺以使位于所述栅叠层的横向相对侧上的所述衬底的第二对区域非晶化;以及 邻近所述间隔物,施加选择性湿法蚀刻化学物质以去除所述非晶化的第一和第二对区域并在所述栅极堆叠的横向相对侧上形成一对空腔,以及在所述一对空腔中沉积硅合金以形成源和 漏极区域和源极和漏极表面尖端区域。