Method of forming a TEOS cap layer at low temperature and...

Coating processes – Direct application of electrical – magnetic – wave – or... – Plasma

Reexamination Certificate

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C427S249100, C427S255230

Reexamination Certificate

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07807233

ABSTRACT:
A method for forming a silicon dioxide cap layer for a carbon hard mask layer for patterning of polysilicon line features having critical dimensions of 50 nm and less is provided. To this end, a low temperature plasma enhanced CVD process is used in which the deposition rate is maintained low to provide improved controllability of the layer thickness and, thus, of the optical characteristics of the silicon dioxide layer.

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