Title :
A Study on aggressive proximity of embedded SiGe with comprehensive SDE engineering for 32 nm-node high-performance pMOSFET technology
Author :
Okamoto, H. ; Yasutake, N. ; Kusunoki, N. ; Adachi, K. ; Itokawa, H. ; Miyano, K. ; Ishida, T. ; Hokazono, A. ; Kawanaka, S. ; Mizushima, I. ; Azuma, A. ; Toyoshima, Y.
Author_Institution :
Center for Semicond. R&D, Toshiba Corp. Semicond. Co., Yokohama
Abstract :
We have presented the high performance pMOSFET with embedded SiGe (eSiGe) technique which is applicable to 32 nm node ground rule (dense gate space). In general, close eSiGe S/D structure to the channel improves pMOSFET performance because of higher strain in the channel. However, we found the relation between boron diffusion modulation in SiGe region and short channel effect (SCE) in the context of eSiGe proximity change. Therefore, additional source drain extension (SDE) optimization is required to improve device performance with close eSiGe structure focusing on parasitic resistance reduction. As a results, we have demonstrated high drive current of 755 muA/mum at Vdd = 1.0 V, IOFF = 100 nA/mum, 30 nm gate length pMOSFET.
Keywords :
Ge-Si alloys; MOSFET; hole mobility; 32 nm node ground rule; SiGe; diffusion modulation; drive current; high performance pMOSFET; hole mobility; parasitic resistance reduction; short channel effect; size 30 nm; source drain extension optimization; voltage 1.0 V; Boron; Capacitive sensors; Degradation; Germanium silicon alloys; MOSFET circuits; Silicon compounds; Silicon germanium; Space technology; Stress; Strips;
Conference_Titel :
Solid-State Device Research Conference, 2008. ESSDERC 2008. 38th European
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-2363-7
Electronic_ISBN :
1930-8876
DOI :
10.1109/ESSDERC.2008.4681764