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Improvement of Thin Palladium and Platinum Silicide Films On (100) Si Substrates By Incorporating Phosphorus Dopant

Published online by Cambridge University Press:  17 March 2011

M. H. Juang ,
C. I. Ou-Yang ,
H. C. Cheng  and
C. T. Lin
M. H. Juang
Affiliation:
Department of Electronics Engineering, National Taiwan University of Science & Technology, Kee-Lung Rd., 106 Taipei, Taiwan
C. I. Ou-Yang
Affiliation:
Department of Electronics Engineering, National Taiwan University of Science & Technology, Kee-Lung Rd., 106 Taipei, Taiwan
H. C. Cheng
Affiliation:
Department of Electronics Engineering, National Chiao-Tung University, 300 Hsin-Chu, Taiwan, Republic of China
C. T. Lin
Affiliation:
Department of Electronics Engineering, National Chiao-Tung University, 300 Hsin-Chu, Taiwan, Republic of China
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Abstract

Effects of phosphorus dopant on thin Pd and Pt silicide films on (100) Si substrates have been studied. As for the samples formed by implanting BF2 dopant into thin Pd films deposited on Si substrates and then annealing, the thermal stability of thin Pd2Si films can be improved relative to the control samples without dopant incorporation. The degree of improvement is affected by the fluorine concentration around the silicide/Si interface and thus the BF2 implant energy. On the other hand, as for the samples formed by implanting phosphorus dopant into thin Pd films and then annealing, both the thermal stability and the silicide conductivity of thin Pd2Si films can be significantly enhanced. The large improvements in the thermal stability and the silicide conductivity are nearly independent of the phosphorus implant energy, and which are primarily due to the formation of textured Pd2Si structures. In addition, the Pt silicides formed by implanting phosphorus dopant into thin Pt films and then annealing also show considerably improved thermal stability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 648: Symposium P – Growth, Evolution & Properties of Surfaces, Thin Films, and Self Organized Structure , 2000 , P11.32
Copyright
Copyright © Materials Research Society 2001

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