Multiple-pulse laser thermal annealing for the formation of Co-silicided junction

Formation of Co-silicide contact layers on narrow silicon regions using multiple-pulse excimer laser annealing is demonstrated. Excellent performance of junction leakage behavior can be attained on narrow-wi...

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Bibliographic Details
Main Authors: Lee, Pooi See, Pey, Kin Leong, Chow, F. L., Tang, L. J., Tung, Chih Hang, Wang, X. C., Lim, G. C.
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2012
Subjects:
Online Access:https://hdl.handle.net/10356/95649
http://hdl.handle.net/10220/8339
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Institution: Nanyang Technological University
Language: English
Description
Summary:Formation of Co-silicide contact layers on narrow silicon regions using multiple-pulse excimer laser annealing is demonstrated. Excellent performance of junction leakage behavior can be attained on narrow-width n+/p and p+/n junction as compared with standard rapid thermal annealed samples. Liquid-phase epitaxial Co-silicide regrowth has been found to occur and create a smooth and abrupt silicide/Si interface with high junction integrity using multiple-pulse laser annealing. Heat confinement created by the shallow trench isolation surrounding the narrow-width n+/p and p+/n junctions has minimized rapid quenching that might result in an amorphous structure. This has facilitated the crystallization of Co-silicide with multiple-pulse laser annealing.