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    • 4. 发明申请
    • Capacitor and method of manufacturing the same
    • 电容器及其制造方法
    • US20080054400A1
    • 2008-03-06
    • US11878698
    • 2007-07-26
    • Woo-Sung LeeHong-Bum ParkHyun-Jin ShinJong-Bom Seo
    • Woo-Sung LeeHong-Bum ParkHyun-Jin ShinJong-Bom Seo
    • H01L29/92H01L21/02
    • H01L28/91H01L27/10814H01L27/10852
    • Example embodiments relate to a capacitor including p-type doped silicon germanium and a method of manufacturing the capacitor. The capacitor may include a lower electrode, a dielectric layer, an upper electrode, a barrier layer and a capping layer. The lower electrode may have a cylindrical shape. The dielectric layer may be on the lower electrode. The dielectric layer may have a uniform thickness. The upper electrode may be on the dielectric layer. The upper electrode may have a more uniform thickness. The capping layer may be on the upper electrode. The capping layer may include a silicon germanium layer doped with p-type impurities. The barrier layer may be between the upper electrode and the capping layer to prevent (or reduce) the p-type impurities from infiltrating into the dielectric layer.
    • 示例性实施例涉及包括p型掺杂硅锗的电容器和制造电容器的方法。 电容器可以包括下电极,电介质层,上电极,阻挡层和封盖层。 下部电极可以具有圆筒形状。 电介质层可以在下电极上。 介电层可以具有均匀的厚度。 上电极可以在电介质层上。 上部电极可以具有更均匀的厚度。 覆盖层可以在上电极上。 覆盖层可以包括掺杂有p型杂质的硅锗层。 阻挡层可以在上电极和覆盖层之间,以防止(或减少)p型杂质渗透到电介质层中。