Methods of forming strained epitaxial semiconductor material(S) above a strain-relaxed buffer layer
    61.
    发明授权
    Methods of forming strained epitaxial semiconductor material(S) above a strain-relaxed buffer layer 有权
    在应变松弛缓冲层上形成应变外延半导体材料(S)的方法

    公开(公告)号:US09490123B2

    公开(公告)日:2016-11-08

    申请号:US14523334

    申请日:2014-10-24

    Abstract: One illustrative method disclosed herein includes, among other things, sequentially forming a first material layer, a first capping layer, a second material layer and a second capping layer above a substrate, wherein the first and second material layers are made of semiconductor material having a lattice constant that is different than the substrate, the first material layer is strained as deposited, and a thickness of the first material layer exceeds its critical thickness required to be stable and strained, performing an anneal process after which the strain in the first material layer is substantially relaxed through the formation of crystallographic defects that are substantially confined to the semiconducting substrate, the first material layer, the first capping layer and the second material layer, and forming additional epitaxial semiconductor material on an upper surface of the resulting structure.

    Abstract translation: 本文公开的一种说明性方法包括在衬底上顺序地形成第一材料层,第一覆盖层,第二材料层和第二覆盖层,其中第一和第二材料层由半导体材料制成,其具有 晶格常数不同于衬底,第一材料层被应变成沉积,并且第一材料层的厚度超过其要求稳定和应变的临界厚度,进行退火工艺,之后第一材料层中的应变 通过形成基本上限制于半导体衬底,第一材料层,第一覆盖层和第二材料层的晶体缺陷,以及在所得结构的上表面上形成附加的外延半导体材料而基本上松弛。

    Methods of forming doped epitaxial SiGe material on semiconductor devices
    65.
    发明授权
    Methods of forming doped epitaxial SiGe material on semiconductor devices 有权
    在半导体器件上形成掺杂的外延SiGe材料的方法

    公开(公告)号:US09455140B2

    公开(公告)日:2016-09-27

    申请号:US14525351

    申请日:2014-10-28

    Abstract: One illustrative method disclosed herein includes, among other things, performing first and second in situ doping, epitaxial deposition processes to form first and second layers of in situ doped epi semiconductor material, respectively, above a semiconductor substrate, wherein one of the first and second layers has a high level of germanium and a low level of P-type dopant material and the other of the first and second layers has a low level of germanium and a high level of P-type dopant material, and performing a mixing thermal anneal process on the first and second layers so as to form the final silicon germanium material having a high level of germanium and a high level of P-type dopant material.

    Abstract translation: 本文中公开的一种说明性方法包括进行第一和第二原位掺杂,外延沉积工艺以分别在半导体衬底之上形成第一和第二层原位掺杂的外延半导体材料,其中第一和第二 层具有高水平的锗和低水平的P型掺杂剂材料,并且第一和第二层中的另一层具有低水平的锗和高水平的P型掺杂剂材料,并且进行混合热退火工艺 在第一和第二层上形成具有高水平的锗和高水平的P型掺杂剂材料的最终硅锗材料。

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