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    • 6. 发明授权
    • Method of forming a high-k crystalline dielectric
    • 形成高k结晶电介质的方法
    • US08975171B1
    • 2015-03-10
    • US13930227
    • 2013-06-28
    • Samsung Electronics Co., Ltd.
    • Ha-Jin LimWeon-Hong Kim
    • H01L21/20H01L21/02
    • H01L21/02181H01L21/02148H01L21/28185H01L21/28194H01L21/28202H01L21/28273H01L21/3105H01L28/40H01L29/513H01L29/517H01L29/518
    • Provided are a method of forming a dielectric and a method of fabricating a semiconductor device. The method includes forming a preliminary dielectric including Hf, O and an “A” element on an underlying layer. The preliminary dielectric is formed in an amorphous structure or a mixed structure of an amorphous structure and an “M” crystalline structure. The “A” element about 1 at % to about 5 at % of the total content of the “A” element and Hf in the preliminary dielectric. Through a nitridation process, nitrogen is added to the preliminary dielectric. The nitrogen-containing dielectric is changed into a dielectric having a “T” crystalline structure through a phase transition process, wherein the “T” crystalline structure is different from the “M” crystalline structure. An upper layer is formed on the “T” crystalline dielectric.
    • 提供形成电介质的方法和制造半导体器件的方法。 该方法包括在下层上形成包含Hf,O和“A”元素的预备电介质。 预置电介质形成为非晶结构或非晶结构和“M”晶体结构的混合结构。 “A”元素在“A”元素的总含量和预置电介质中的Hf的约1at%至约5at%的“A”元素。 通过氮化处理,将氮气加入到初步电介质中。 通过相变过程将含氮电介质变成具有“T”晶体结构的电介质,其中“T”晶体结构不同于“M”晶体结构。 在“T”晶体电介质上形成上层。