摘要:
The present invention provides a method for manufacturing a semiconductor device as well as a semiconductor device. The method, among other steps, may include forming a gate structure (230) over a substrate (210), and forming a strain inducing film (330, 520, 530 or 810) over the substrate (210) and proximate the gate structure (230), the strain inducing film (330, 520, 530 or 810) comprising a bis t-butylaminosilane (BTBAS) silicon nitride layer formed using ratio of bis t-butylaminosilane (BTBAS) to ammonia (NH3) of 1:1 or greater.
摘要:
In one embodiment, a method for forming a semiconductor structure in manufacturing a semiconductor device includes providing a pad layer on a surface of a substrate, providing a nitride layer on the pad layer, and providing a sacrificial oxide layer on the nitride layer. In a first etching step, at least the sacrificial oxide and nitride layers are etched to define opposing substantially vertical surfaces of at least the sacrificial oxide and nitride layers. In a second etching step, the nitride layer is etched such that the opposing substantially vertical surfaces of the nitride layer are recessed from the opposing substantially vertical surfaces of the sacrificial oxide layer, the sacrificial oxide layer substantially preventing the nitride layer from decreasing in thickness as a result of the etching of the nitride layer. In a third etching step, the substrate is etched to form a trench extending into the substrate for purposes of defining one or more isolation regions adjacent the trench.
摘要:
The invention describes a method for the selective dry etching of tantalum and tantalum nitride films. Tantalum nitride layers (30) are often used in semiconductor manufacturing. The semiconductor substrate is exposed to a reducing plasma chemistry which passivates any exposed copper (40). The tantalum or tantalum nitride films are selectively removed using an oxidizing plasma chemistry.