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    • 3. 发明申请
    • EPITAXIAL WAFER AND A METHOD OF MANUFACTURING THEREOF
    • 外延波形及其制造方法
    • WO2014086742A1
    • 2014-06-12
    • PCT/EP2013/075313
    • 2013-12-03
    • SILTRONIC AGINTEL CORPORATION
    • STORCK, PeterWERNER, NorbertVORDERWESTNER, MartinTOLCHINSKY, PeterYABLOK, Irwin
    • H01L21/20H01L21/223
    • H01L21/3225H01L21/02381H01L21/02532H01L21/0254H01L21/0257H01L21/02573H01L21/0262H01L21/3221H01L29/167
    • Epitaxial wafer, comprising a silicon substrate wafer having a first side and a second side, and a silicon epitaxial layer deposited on the first side of the silicon substrate wafer, and optionally one or more additional epitaxial layers on top of the silicon epitaxial layer, the silicon epitaxial layer being doped with nitrogen at a concentration of 1 x 10 16 atoms/cm 3 or more and 1 x 10 20 atoms/cm 3 or less, or at least one of the one or more additional epitaxial layers being doped with nitrogen at a concentration of 1 x 10 16 atoms/cm 3 or more and 1 x 10 20 atoms/cm 3 or less, or the silicon epitaxial layer and at least one of the one or more additional epitaxial layers being doped with nitrogen at a concentration of 1 x 10 16 atoms/cm 3 or more and 1 x 10 20 atoms/cm 3 or less. The epitaxial wafer is produced by depositing the silicon epitaxial layer or at least one of the one or more additional epitaxial layers, or the silicon epitaxial layer and at least one of the one or more additional epitaxial layers at a deposition temperature of 940°C or less through chemical vapor deposition in the presence of a deposition gas atmosphere containing one or more silicon precursor compounds and one or more nitrogen precursor compounds.
    • 包括具有第一侧和第二侧的硅衬底晶片和沉积在硅衬底晶片的第一侧上的硅外延层以及可选地在硅外延层的顶部上的一个或多个附加外延层的外延晶片, 硅外延层掺杂浓度为1×1016原子/厘米3以上且1×1020原子/厘米3以下的氮,或者所述一个或多个附加外延层中的至少一个掺杂浓度为1的氮 x 1016原子/ cm3以上且1×10 10原子/ cm 3以下,或者硅外延层,并且所述一个或多个另外的外延层中的至少一个掺杂有浓度为1×10 16原子/ cm 3以上的氮 和1×1020原子/ cm3以下。 通过在940℃的沉积温度下沉积硅外延层或一个或多个另外的外延层中的至少一个或者硅外延层和一个或多个另外的外延层中的至少一个来制造外延晶片,或 在含有一种或多种硅前体化合物和一种或多种氮前体化合物的沉积气体气氛的存在下,通过化学气相沉积较少。