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    • 65. 发明授权
    • Solid phase epitaxy recrystallization by laser annealing
    • 激光退火固相外延再结晶
    • US07118980B2
    • 2006-10-10
    • US10972872
    • 2004-10-25
    • Amitabh Jain
    • Amitabh Jain
    • H01L21/336
    • H01L29/7833H01L21/26506H01L21/268H01L29/6656H01L29/6659
    • Methods (70) are described for fabricating shallow and abrupt gradient drain extensions for MOS type transistors, in which a solid phase epitaxial recrystallization is performed within the drain extensions utilizing a laser SPER annealing process in the manufacture of semiconductor products. One method (70) includes a preamorphizing process (74) of implanting a heavy ion species such as Germanium deep into an extension region of a substrate adjacent a channel region of the substrate to form a deep amorphized region, then implanting boron or another such dopant species into an extension region of the substrate adjacent the channel region. The implanted dopant is then preannealed (78) at a low temperature to set the junction depth and doping concentration. The extensions and/or the deep source/drain regions are subsequently annealed (84) with a laser at a high temperature providing a solid phase epitaxial recrystallization in the regions proximate the channel region to achieve ultra high doping concentrations and activation levels with an abrupt gradient.
    • 描述了用于制造用于MOS型晶体管的浅的和突然的梯度漏极延伸的方法(70),其中在半导体产品的制造中利用激光SPER退火工艺在漏极延伸内进行固相外延重结晶。 一种方法(70)包括将邻近衬底的沟道区域的衬底中的重离子物质(例如锗)深深地注入到衬底的延伸区域中以形成深非晶化区域的前变质化工艺(74),然后将硼或另一种这样的掺杂剂 物质进入邻近沟道区的衬底的延伸区域。 然后将注入的掺杂剂在低温下预退火(78)以设定结深度和掺杂浓度。 随后在高温下用激光退火延伸部分和/或深源极/漏极区域(84),从而在靠近沟道区域的区域提供固相外延重结晶,以实现超高掺杂浓度和具有突变梯度的激活水平 。
    • 68. 发明授权
    • Transistor with improved source/drain extension dopant concentration
    • 具有改善的源极/漏极延伸掺杂剂浓度的晶体管
    • US06743705B2
    • 2004-06-01
    • US10287979
    • 2002-11-05
    • Manoj MehrotraHaowen BuAmitabh Jain
    • Manoj MehrotraHaowen BuAmitabh Jain
    • H01L214763
    • H01L29/6659H01L29/6656
    • A method (40) of forming an integrated circuit (60) device including a substrate (64). The method including the step of first (42), forming a gate stack (62) in a fixed relationship to the substrate, the gate stack including a gate having sidewalls. The method further includes the step of second (42), implanting source/drain extensions (701, 702) into the substrate and self-aligned relative to the gate stack. The method further includes the steps of third (46, 48), forming a first sidewall-forming layer (72) in a fixed relationship to the sidewalls and forming a second sidewall-forming layer (74) in a fixed relationship to the sidewalls. The step of forming a second sidewall-forming layer includes depositing the second sidewall-forming layer at a temperature equal to or greater than approximately 850° C. The method further includes the step of fourth (50), implanting deep source/drain regions (761, 762) into the substrate and self-aligned relative to the gate stack and the first and second sidewall-forming layers.
    • 一种形成包括衬底(64)的集成电路(60)装置的方法(40)。 该方法包括第一步骤(42)的步骤,与衬底形成固定关系的栅叠层(62),栅叠层包括具有侧壁的栅极。 该方法还包括第二步骤(42),将源极/漏极延伸部分(701,702)注入到衬底中并相对于栅极堆叠自对准。 该方法还包括第三(46,48)的步骤,形成与侧壁成固定关系的第一侧壁形成层(72),并形成与侧壁成固定关系的第二侧壁形成层(74)。 形成第二侧壁形成层的步骤包括在等于或大于约850℃的温度下沉积第二侧壁形成层。该方法还包括第四(50)的步骤,将深源/漏区( 761,762)插入衬底并且相对于栅极堆叠以及第一和第二侧壁形成层自对准。