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Double deposition of a stress-inducing layer in an interlayer dielectric with intermediate stress relaxation in a semiconductor device

机译:应力诱导层在层间电介质中的双重沉积,中间应力松弛在半导体器件中

摘要

Enhanced efficiency of a stress relaxation implantation process may be achieved by depositing a first layer of reduced thickness and relaxing the same at certain device regions, thereby obtaining an enhanced amount of substantially relaxed dielectric material in close proximity to the transistor under consideration, wherein a desired high amount of stressed dielectric material may be obtained above other transistors by performing a further deposition process. Hence, the negative effect of the highly stressed dielectric material for specific transistors, for instance in densely packed device regions, may be significantly reduced by depositing the highly stressed dielectric material in two steps with an intermediate relaxation implantation process.
机译:应力松弛注入工艺的效率提高可以通过沉积厚度减小的第一层并将其在某些器件区域上松弛来实现,从而在所考虑的晶体管附近获得增强量的基本上松弛的介电材料,其中期望通过执行进一步的沉积工艺,可以在其他晶体管之上获得大量的应力介电材料。因此,通过在中间松弛注入工艺的两个步骤中沉积高应力介电材料,可以显着降低高应力介电材料对特定晶体管的负面影响,例如在密集封装的器件区域中。

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