摘要:
A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
摘要:
Power MOSFET's and fabrication processes for power MOSFET's use a continuous conductive gate structure within trenches to avoid device topology problems caused when a gate bus extends above a substrate. The conductive gate structure forms trench gates in an active device region and forms a gate bus in a gate bus trench. The gate bus trench connects to device trenches and can be wide to facilitate forming a contact to the gate bus. The device trenches can be narrow to maximize device density. The gate bus and/or gates contain a metal/silicide to reduce resistance, and polysilicon surrounds the metal/silicide to prevent metal atoms from penetrating the gate oxide layers. A CMP process can planarize the conductive gate structure and/or overlying insulating layers. The processes are compatible with forming self-aligned or conventional contacts in the active device region.
摘要:
PROBLEM TO BE SOLVED: To provide a semiconductor device having a polymetal gate electrode comprising a barrier film formed from a TiN film and a buffer layer, and to provide a manufacturing method for the semiconductor device.SOLUTION: A semiconductor device comprises: a gate insulating film formed on a semiconductor substrate; and a polymetal gate electrode including a conductive polysilicon film, a first metal silicide film, a barrier film, and a metal film which are laminated on the gate insulating film in order from the semiconductor substrate side. The barrier film comprises: a TiN film formed on the first metal silicide film; and a buffer layer provided between the TiN film and the metal film.