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    • 1. 发明申请
    • ALTERNATIVE INTEGRATION SCHEME FOR CMOS S/D SiGe PROCESS
    • CMOS S / D SiGe工艺的替代整合方案
    • US20070287244A1
    • 2007-12-13
    • US11739099
    • 2007-04-24
    • Meihua ShenYonah ChoMark KawaguchiFaran NouriDiana Ma
    • Meihua ShenYonah ChoMark KawaguchiFaran NouriDiana Ma
    • H01L21/8236
    • H01L21/823814H01L21/823864
    • A method for fabricating a semiconductor device with adjacent PMOS and NMOS devices on a substrate includes forming a PMOS gate electrode with a PMOS hardmask on a semiconductor substrate with a PMOS gate dielectric layer in between, forming an NMOS gate electrode with an NMOS hardmask on a semiconductor substrate with an NMOS gate dielectric layer in between, forming an oxide liner over a portion of the PMOS gate electrode and over a portion of the NMOS gate electrode, forming a lightly doped N-Halo implant, depositing a nitride layer over the oxide liner, depositing photoresist on the semiconductor substrate in a pattern that covers the NMOS device, etching the nitride layer from the PMOS device, wherein the etching nitride layer leaves a portion of the nitride layer on the oxide liner, etching semiconductor substrate to form a Si recess, and depositing SiGe into the Si recesses, wherein the SiGe and the nitride layer enclose the oxide liner. The method can also include implanting in the semiconductor substrate a source and drain region for the PMOS.
    • 一种用于在衬底上制造具有相邻PMOS和NMOS器件的半导体器件的方法包括在半导体衬底上形成具有PMOS硬掩模的PMOS栅电极,其间具有PMOS栅极介电层,在NMOS栅极上形成NMOS栅极 半导体衬底,其间具有NMOS栅极介电层,在PMOS栅电极的一部分上方和NMOS栅电极的一部分之上形成氧化物衬垫,形成轻掺杂的N-Halo注入,在氧化物衬垫上沉积氮化物层 以覆盖所述NMOS器件的图案沉积在所述半导体衬底上的光致抗蚀剂,从所述PMOS器件蚀刻所述氮化物层,其中所述蚀刻氮化物层离开所述氧化物衬底上的所述氮化物层的一部分,蚀刻半导体衬底以形成Si凹槽 并且将SiGe沉积到Si凹部中,其中SiGe和氮化物层包围氧化物衬垫。 该方法还可以包括在半导体衬底中注入用于PMOS的源极和漏极区域。
    • 6. 发明授权
    • Method of manufacturing shallow source/drain junctions in a salicide process
    • 在自杀过程中制造浅源/排水路的方法
    • US06274445B1
    • 2001-08-14
    • US09243739
    • 1999-02-03
    • Faran Nouri
    • Faran Nouri
    • H01L21336
    • H01L29/41783H01L21/2652H01L29/665H01L29/66545
    • An ion implanting process allows for shallow source and drain junctions of the transistor. According to one example embodiment, a BARC layer is formed over a gate, and a poly-crystalline or amorphous silicon shield is deposited over the source and drain regions, then the BARC and silicon are chemically mechanically polished. The poly-crystalline or amorphous silicon shield absorbs the initial impact the dopant species of ion implantation and reduces the incidence of irreversible source/drain crystal damage caused by the process. After the ion implantation, the species implanted in the poly or amorphous silicon is diffused into the source/drain regions by annealing. An additional siliciding of the poly or amorphous silicon covering the source and drain minimizes the need for deeper source/drain junctions and hence improves short-channel properties.
    • 离子注入工艺允许晶体管的浅源极和漏极结。 根据一个示例实施例,在栅极上形成BARC层,并且多晶硅或非晶硅屏蔽层沉积在源区和漏区上,则BARC和硅经化学机械抛光。 多晶硅或非晶硅屏蔽吸收离子注入的掺杂物质的初始影响,并减少由该过程引起的不可逆源/漏晶体损伤的发生。 离子注入后,通过退火将注入在多晶硅或非晶硅中的物质扩散到源/漏区。 覆盖源极和漏极的多晶硅或非晶硅的另外的硅化将对更深的源极/漏极结的需要最小化,从而改善了短沟道特性。