用射频磁控溅射和直流磁控溅射的方法分别在Si(100)衬底和Cu膜间制备了30nm 的NbN薄膜,Cu/NbN/Si样品在高纯氮气保护下退火至700℃.用四探针电阻测试仪(FPP)、AFM、SEM、XRD、AES研究了溅射方式对NbN薄膜扩散阻挡性能的影响响退火前XRD结果表明,直流溅射制备的NbN薄膜为典型的晶态结构,射频溅射制备的薄膜为典型的非儡态结构.高温退火后的XRD、SEM、FPP、AES研究结果表明非晶态结构的NbN薄膜有更好的扩散阻挡性能,700℃时仍能很好地阻挡Cu原子的扩散.
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