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    • 3. 发明授权
    • Article comprising fluorinated amorphous carbon and process for
fabricating article
    • 包含氟化无定形碳的制品及其制造方法
    • US06147407A
    • 2000-11-14
    • US49256
    • 1998-03-27
    • Sungho JinRuichen LiuChien-Shing PaiWei Zhu
    • Sungho JinRuichen LiuChien-Shing PaiWei Zhu
    • C23C14/06C23C14/22C23C14/34H01L21/312H01L23/532H01L23/48
    • C23C14/225C23C14/0605C23C14/3464H01L21/3127H01L23/5329H01L2924/0002
    • The invention provides a device containing a low .kappa., hydrogen-free a-C:F layer with good adhesion and thermal stability. It was found that the combination of desirable properties was attainable by a relatively easy process, as compared to processes that utilize gaseous sources, such as CVD. Specifically, the a-C:F layer is formed by sputter deposition, using only solid sources for the fluorine and carbon, and in the absence of any intentionally-added hydrogen-containing source. The sputtering is performed such that the layer contains 20 to 60 at. % fluorine, and also, advantageously, such that the a-C:F exhibits a bandgap of about 2.0 eV or greater. The a-C:F layer formed by the process of the invention exhibits a dielectric constant, at 1 MHz and room temperature, of 3.0 or less, advantageously 2.5 or less, and more advantageously 2.1 or less, along with being thermally stable up to at least 350.degree. C., advantageously 450.degree. C., and exhibiting a stress of about 100 MPa or less, in absolute value.
    • 本发明提供含有低κ,无氢a-C:F层的装置,其具有良好的粘附性和热稳定性。 已经发现,与使用气体源(例如CVD)的方法相比,期望性质的组合可通过相对容易的方法获得。 具体地,通过溅射沉积形成a-C:F层,仅使用固体源作为氟和碳,并且在没有任何有意添加的含氢源的情况下。 进行溅射使得该层含有20至60at。 %氟,并且还有利地使得a-C:F表现出约2.0eV或更大的带隙。 通过本发明的方法形成的aC:F层在1MHz和室温下表现出3.0或更小,有利地为2.5或更小,更优选为2.1或更小的介电常数,并且至少热稳定 350℃,有利地450℃,绝对值为约100MPa以下。