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    • 14. 发明授权
    • Chemical vapor deposition of tungsten using nitrogen-containing gas
    • 使用含氮气体化学气相沉积钨
    • US06211082B1
    • 2001-04-03
    • US09021462
    • 1998-02-10
    • Bong-young YooByung-Lyul ParkDae-hong KoSang-in Lee
    • Bong-young YooByung-Lyul ParkDae-hong KoSang-in Lee
    • H01L2144
    • C23C16/08H01L21/28568
    • A tungsten or other metal layer is chemical vapor deposited using a source gas containing tungsten, a reducing gas and a nitrogen-containing gas. The nitrogen-containing gas can act as a surface roughness reducing gas that reduces the roughness of the tungsten layer compared to a tungsten layer that is chemical vapor deposited using the source gas containing tungsten and the reducing gas, but without using the surface roughness reducing gas. Viewed in another way, the nitrogen-containing gas acts as a growth rate controlling gas that produces uniform growth of the tungsten layer in a plurality of directions compared to a tungsten layer that is deposited using the source gas containing tungsten and the reducing gas, but without using the growth rate controlling gas.
    • 使用含有钨,还原气体和含氮气体的源气体化学气相沉积钨或其它金属层。 与使用含有钨和还原气体的源气体进行化学气相沉积的钨层相比,含氮气体可以用作表面粗糙度降低气体,其降低钨层的粗糙度,但不使用表面粗糙度还原气体 。 以另一种方式看,与使用含钨和还原气体的源气体沉积的钨层相比,含氮气体充当生长速率控制气体,其产生钨层在多个方向上的均匀生长,但是 而不用生长速率控制气体。