Patent ID: 7700499
Filing Date: 2010-04-20
Classification: H01L

Abstract:
1. A method for making a semiconductor device, comprising: providing a semiconductor structure equipped with first and second gate structures and having channel regions associated with the gate structures; depositing a first sub-layer of a first stressor material over the gate structures and channel regions, said first stressor material containing silicon-nitrogen bonds; curing the first stressor material through exposure to a radiation source, thereby forming a first cured sub-layer; depositing a second sub-layer of a second stressor material over the first cured sub-layer, said second stressor material containing silicon-nitrogen bonds; curing the second stressor material through exposure to a radiation source, thereby forming a second cured sub-layer; depositing a third sub-layer of a third stressor material between the first and second gate structures and in contact with the second sub-layer; curing the third stressor material through exposure to a radiation source; depositing a fourth sub-layer of a fourth stressor material between the first and second gate structures and in contact with the third sub-layer; and curing the fourth stressor material through exposure to radiation source.