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    • 3. 发明专利
    • Method for depositing electrode with high effective work function
    • 沉积具有高效工作功能的电极的方法
    • JP2012253352A
    • 2012-12-20
    • JP2012125885
    • 2012-06-01
    • Asm Ip Holding B Vエーエスエム アイピー ホールディング ビー.ブイ.
    • MACAOTOSAN BRADMIREJAN WILLEM MAESXIE QI
    • H01L21/336H01L21/28H01L21/8238H01L27/092H01L29/423H01L29/49H01L29/78
    • H01L21/823842H01L21/28088H01L29/4966H01L29/66545H01L29/7833
    • PROBLEM TO BE SOLVED: To provide a method for processing a semiconductor.SOLUTION: According to some embodiments, an electrode having a high effective work function is formed. The electrode may be the gate electrode of a transistor and may be formed on a high-k gate dielectric by depositing a first layer of conductive material, exposing that first layer to a hydrogen-containing gas, and depositing a second layer of conductive material over the first layer. The first layer may be deposited using a non-plasma process in which the substrate is not exposed to plasma or plasma-generated radicals. The hydrogen-containing gas to which the first layer is exposed may include an excited hydrogen species, which may be part of a hydrogen-containing plasma, and may be hydrogen-containing radicals. The first layer may also be exposed to oxygen before depositing the second layer. The work function of the gate electrode in the gate stack may be about 5 eV or higher in some embodiments.
    • 要解决的问题:提供一种半导体处理方法。 解决方案:根据一些实施例,形成具有高有效功函数的电极。 电极可以是晶体管的栅极,并且可以通过沉积第一层导电材料,将第一层暴露于含氢气体,并将第二层导电材料沉积在高k栅极电介质上形成 第一层。 可以使用其中衬底不暴露于等离子体或等离子体产生的自由基的非等离子体工艺来沉积第一层。 第一层露出的含氢气体可以包括可以是含氢等离子体的一部分的被激发的氢物质,并且可以是含氢基团。 在沉积第二层之前,第一层也可能暴露于氧气。 在一些实施例中,栅极堆叠中的栅电极的功函数可以为约5eV或更高。 版权所有(C)2013,JPO&INPIT