随着集成电路向超大规模的发展,Cu互连技术已成为硅工艺领域的热点话题,其关键技术之一--扩散阻挡层的研究越来越受到人们的关注.结合课题组阻挡层的研究工作,介绍了当前Cu互连技术中难熔金属及其氮(碳、硅、氧)化物、多层膜、三元化合物等各类扩散阻挡层材料的研究发展现状,论述了阻挡层的厚度问题、阻挡层研究过程中的分析表征方法以及当前Cu互连的理论研究现状,归纳并分析了阻挡层的失效机制.
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