对纳米多孔低介电常数薄膜孔洞率、孔径、孔径分布和孔洞连通性等孔结构的表征有助于理解薄膜的结构和提高其性能.近年来开展了利用与特殊X射线反射联用的小角中子散射、小角X射线散射、椭偏测孔仪、正电子湮没谱和表面声波谱等非破坏性方法表征多孔低介电常数薄膜孔结构的研究.介绍了这些方法的基本原理,综述了利用这些方法研究低介电常数介质薄膜及其集成工艺的进展,总结了这些方法表征多孔薄膜孔结构的特征.
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