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I-V Characteristics and Interface Properties of Al-Si(P) Contacts by the Krf Excimer Laser Induced Recrystallization

Published online by Cambridge University Press:  28 February 2011

K. Sohn
Affiliation:
Department of Electrical and Computer Engineering, New Jersey Institute of Tech nology Newark, NJ 07102
H. Lee
Affiliation:
Department of Electrical and Computer Engineering, New Jersey Institute of Tech nology Newark, NJ 07102
D. A. Hensley
Affiliation:
Center for Ceramic Research, Rutgers University Piscataway, NJ 08855
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Abstract

Al was deposited on the both sides of p-type Si by the sputtering, and the pulsed KrF excimer laser was irradiated on the one side and both sides of Al dot contacts. Due to the thin-high doping recrystallized layer, the transitions from the Schottky diodes to the ohmic contacts via backward diodes were observed in I-V measurement. Good N-shape negative resistances and notches were observed in the diodes, and ohmic contacts. Possible interpretations of the orgin of these phenomena are discussed. And, the simple model of the effective barrier height reduction under the thermionic field emission was developed using WKB approximation, and tunneling theory. By the depth Auger analysis, Al, and Si profiles near Al-Si interface after the laser irradiation were observed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1993

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References

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