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Abstract:
为研究VLSI金属互连线的应力导致IC器件失效的问题,采用同步辐射源X射线衍射技术,原位测试了VLSI中Al互连线在电迁徙及加热条件下的应力变化.沉积态的Al互连线在室温下为拉应力. 退火过程使拉应力逐渐减小,在300~350℃过程中由拉应力转为压应力.在电流密度为(3×105~4×106)A/cm2,275min的电徙动实验过程中,Al互连线阳极端由拉应力转变为压应力,并随后随着电流密度的增加而增加.此外,采用扫描电镜(SEM)观察了Al互连线的电迁徙失效特征及应力释放过程.
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北京工业大学学报
ISSN: 0254-0037
Year: 2005
Issue: 5
Volume: 31
Page: 514-518
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: 4
Chinese Cited Count:
30 Days PV: 12
Affiliated Colleges: