Presentation 1998/7/24
Reduction of junction leakage current and sheet resistance using C-49 TiSi_2 as a diffusion source
Dong Kyun Sohn, Ji-Soo Park, Byung Hak Lee, Jin Won Park, Jeong Soo Byun, Jac Jeong Kim,
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Abstract(in English) This paper describes a new approach for low reverse leakage current in n+/p titanium-silicided shallow junctions(Xj=130nm)featuring mediated ion implantation of Ti-silicide(MITS).After formation of source/drain regions, Ti deposition and a lst heat-treatment was used to form C-49 Ti-silicide.Subsequently, MITS arsenic ions were implanted and a 2nd heat-treatment carried out at 850℃ to form C-54 Ti-silicide. In spite of no additional drive-in process following to 2nd annealing, the implanted As diffused quite well into Si substrate and thus the reverse leakage current of the n+/p junctions was greatly reduced from 200 nA/cm^2 to 3 nA/cm^2.This technique satisfies low sheet resistance(<5Ω/sq.)and leakage current of Ti-silicided shallow junctions simultaneously. We conclude that C-49 TiSi_2 can be used as a diffusion source without causing any degradation of sub-quarter micron n-MOSFET's.
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Keyword(in English) titanium salicide / diffusion source / shallow junction / low leakage current
Paper # SDM98-95,ICD98-94
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Conference Information
Committee SDM
Conference Date 1998/7/24(1days)
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Paper Information
Registration To Silicon Device and Materials (SDM)
Language KOR
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Reduction of junction leakage current and sheet resistance using C-49 TiSi_2 as a diffusion source
Sub Title (in English)
Keyword(1) titanium salicide
Keyword(2) diffusion source
Keyword(3) shallow junction
Keyword(4) low leakage current
1st Author's Name Dong Kyun Sohn
1st Author's Affiliation Process Team, R&D Division, LG Semicon.Co.Ltd.,()
2nd Author's Name Ji-Soo Park
2nd Author's Affiliation Process Team, R&D Division, LG Semicon.Co.Ltd.,
3rd Author's Name Byung Hak Lee
3rd Author's Affiliation Process Team, R&D Division, LG Semicon.Co.Ltd.,
4th Author's Name Jin Won Park
4th Author's Affiliation Process Team, R&D Division, LG Semicon.Co.Ltd.,
5th Author's Name Jeong Soo Byun
5th Author's Affiliation Process Team, R&D Division, LG Semicon.Co.Ltd.,
6th Author's Name Jac Jeong Kim
6th Author's Affiliation Process Team, R&D Division, LG Semicon.Co.Ltd.,
Date 1998/7/24
Paper # SDM98-95,ICD98-94
Volume (vol) vol.98
Number (no) 194
Page pp.pp.-
#Pages 7
Date of Issue