Silicide Contacts for Sub-0.25 μm Devices

1999 ◽  
Vol 564 ◽  
Author(s):  
L. J. Chen ◽  
S. L. Cheng ◽  
S. M. Chang ◽  
Y. C. Peng ◽  
H. Y. Huang ◽  
...  

AbstractLow resistivity TiSi2, CoSi2 and NiSi are the three primary candidates for metal contacts in sub-0.25 μ m devices. In the present paper, we review recent progress in the investigations of lowresistivity contacts, which include enhanced formation of C54-TiSi2 on (001)Si by tensile stress, high temperature sputtering, and interposing Mo or TiN layer, improved thermal stability of C54-TiSi2 by the addition of N2 during Ti sputtering or N implantation in (001)Si, self-aligned formation of CoSi2 on the selective epitaxial growth silicon layer on (001)Si, effects of stress on the epitaxial growth of CoSi2 on (001 )Si, improvement of thermal stability of CoSi2 by nitrogen ion implantation or high temperature sputtering, and improvement of thermal stability of NiSi by nitrogen ion implantation or compressive stress.

1998 ◽  
Vol 16 (2) ◽  
pp. 477-481 ◽  
Author(s):  
Yong Tae Kim ◽  
Chul Soon Kwon ◽  
Dong Joon Kim ◽  
Jong-Wan Park ◽  
Chang Woo Lee

2020 ◽  
Vol 177 ◽  
pp. 109003
Author(s):  
D.O. Panov ◽  
V.S. Sokolovsky ◽  
N.D. Stepanov ◽  
S.V. Zherebtsov ◽  
P.V. Panin ◽  
...  

1985 ◽  
Vol 53 ◽  
Author(s):  
C. Slawinski ◽  
B.-Y. Mao ◽  
P.-H. Chang ◽  
H.W. Lam ◽  
J.A. Keenan

ABSTRACTBuried nitride silicon-on-insulator (SOI) structures have been fabricated using the technique of nitrogen ion implantation. The crystallinity of the top silicon film was found to be exceptionally good. The minimum channeling yield, Xmin' was better than 3%. This is comparable to the value observed for single crystal silicon. The buried insulator formed during the anneals has been identified as polycrystalline α-Si3 N4 with numerous silicon inclusions. This nitride, however, has been found to remain amorphous in regions at the center of the implant where the nitrogen concentration exceeds the stoichiometric level of Si3N4. Nitrogen donor formation in the top silicon layer has also been observed.


1995 ◽  
Vol 34 (Part 1, No. 6A) ◽  
pp. 3036-3042 ◽  
Author(s):  
Seiji Yaguchi ◽  
Tsunenobu Kimoto ◽  
Naoki Ohyama ◽  
Hiroyuki Matsunami

1993 ◽  
Vol 316 ◽  
Author(s):  
J-P. Hirvonen ◽  
D. Rück ◽  
S. Yan ◽  
R. Lappalainen ◽  
P. Torri

ABSTRACTIon implantation into steels with a martensitic microstracture is reviewed and discussed in terms of different implanted species and observed changes in the structure. Both single ion and dual ion implantation treatment are included. The disability of the nitrogen ion implantation to improve the tribological characteristics of steels with a martensitic microstructure can be overcome by dual implantation of titanium and carbon, for example. Results of tribological tests on samples in which titanium is replaced by chromium are more controversial, although changes in the sliding characteristics were observed. Dry sliding on the samples implanted up to 1018 ions/cm2 is totally different by nature and -based on the reported results- associated with the formation of carbon precipitates on the surface. The thermal stability of implanted nitrogen and carbon in MЗ high-speed steel was examined and nitrogen was shown to be less stable than carbon. Mechanical and tribological properties were further changed by heat treatment after ion implantation, which indicates that temperature is also a critical parameter during ion implantation.


2004 ◽  
Vol 810 ◽  
Author(s):  
Phillip E. Thompson ◽  
Joe Bennett ◽  
Susan Felch

ABSTRACTUltra-shallow p+ junctions are required for next generation electronics. We present a technique for the formation of ultra-shallow p+ junctions that increases the thermal stability of the junctions formed by ion implantation. By using a 10 nm Si1−xGex barrier layer, the diffusion of B is inhibited during high temperature processes. Alloys having a composition from x = 0 to 0.4 were investigated and it is shown that the most effective barrier had the maximum Ge fraction. The junction depth decreased to 36.7 nm for a 5×1015/cm2 1kV BF3 plasma implant spike annealed at 1050°C, compared to a junction depth of 48 nm for a Si control sample having the identical implant and anneal. It is hypothesized that the inhibition of B diffusion in the alloy layer is caused by a reduction of the Si self-interstitials in the alloy.


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