公开(公告)号：US20110081774A1

公开(公告)日：2011-04-07

申请号：US12575280

申请日：2009-10-07

申请人： Matt Yeh ,  Hui Ouyang ,  Da-Yuan Lee ,  Kuang Yuan Hsu ,  Hun-Jan Tao ,  Xiong-Fei Yu

发明人： Matt Yeh ,  Hui Ouyang ,  Da-Yuan Lee ,  Kuang Yuan Hsu ,  Hun-Jan Tao ,  Xiong-Fei Yu

IPC分类号： H01L21/28

CPC分类号： H01L29/401 ,  H01L21/823828 ,  H01L21/823835 ,  H01L21/823842 ,  H01L29/66545

摘要： A method for fabricating a semiconductor device is disclosed. In one embodiment, the method may include providing a substrate; forming a gate structure including a first dummy gate over the substrate; removing the first dummy gate from the gate structure to form a trench; forming an interfacial layer, high-k dielectric layer, and capping layer to partially fill in the trench; forming a second dummy gate over the capping layer, wherein the second dummy gate fills the trench; and replacing the second dummy gate with a metal gate. In one embodiment, the method may include providing a substrate; forming an interfacial layer over the substrate; forming a high-k dielectric layer over the interfacial layer; forming an etch stop layer over the high-k dielectric layer; forming a capping layer including a low thermal budget silicon over the etch stop layer; forming a dummy gate layer over the capping layer; forming a gate structure; and performing a gate replacement process.

摘要翻译： 公开了一种制造半导体器件的方法。 在一个实施例中，该方法可以包括提供衬底; 在所述衬底上形成包括第一虚拟栅极的栅极结构; 从栅极结构去除第一伪栅极以形成沟槽; 形成界面层，高k电介质层和覆盖层以部分地填充在沟槽中; 在所述覆盖层上形成第二虚拟栅极，其中所述第二伪栅极填充所述沟槽; 并用金属栅极替换第二虚拟栅极。 在一个实施例中，该方法可以包括提供衬底; 在衬底上形成界面层; 在界面层上形成高k电介质层; 在所述高k电介质层上形成蚀刻停止层; 在所述蚀刻停止层上形成包括低热预算硅的覆盖层; 在覆盖层上形成虚拟栅极层; 形成栅极结构; 并进行门更换处理。

公开(公告)号：US08367563B2

公开(公告)日：2013-02-05

申请号：US12575280

申请日：2009-10-07

申请人： Matt Yeh ,  Hui Ouyang ,  Da-Yuan Lee ,  Kuang Yuan Hsu ,  Hun-Jan Tao ,  Xiong-Fei Yu

发明人： Matt Yeh ,  Hui Ouyang ,  Da-Yuan Lee ,  Kuang Yuan Hsu ,  Hun-Jan Tao ,  Xiong-Fei Yu

IPC分类号： H01L21/3205

CPC分类号： H01L29/401 ,  H01L21/823828 ,  H01L21/823835 ,  H01L21/823842 ,  H01L29/66545

摘要： A method for fabricating a semiconductor device is disclosed. In one embodiment, the method may include providing a substrate; forming a gate structure including a first dummy gate over the substrate; removing the first dummy gate from the gate structure to form a trench; forming an interfacial layer, high-k dielectric layer, and capping layer to partially fill in the trench; forming a second dummy gate over the capping layer, wherein the second dummy gate fills the trench; and replacing the second dummy gate with a metal gate. In one embodiment, the method may include providing a substrate; forming an interfacial layer over the substrate; forming a high-k dielectric layer over the interfacial layer; forming an etch stop layer over the high-k dielectric layer; forming a capping layer including a low thermal budget silicon over the etch stop layer; forming a dummy gate layer over the capping layer; forming a gate structure; and performing a gate replacement process.

摘要翻译： 公开了一种制造半导体器件的方法。 在一个实施例中，该方法可以包括提供衬底; 在所述衬底上形成包括第一虚拟栅极的栅极结构; 从栅极结构去除第一伪栅极以形成沟槽; 形成界面层，高k电介质层和覆盖层以部分地填充在沟槽中; 在所述覆盖层上形成第二虚拟栅极，其中所述第二伪栅极填充所述沟槽; 并用金属栅极替换第二虚拟栅极。 在一个实施例中，该方法可以包括提供衬底; 在衬底上形成界面层; 在界面层上形成高k电介质层; 在所述高k电介质层上形成蚀刻停止层; 在所述蚀刻停止层上形成包括低热预算硅的覆盖层; 在覆盖层上形成虚拟栅极层; 形成栅极结构; 并进行门更换处理。