Effects of electron beam generated in vacuum photo-thermal processing on metal-silicon contacts

G. Golan, A. Axelevitch, E. Rabinovitch

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Abstract

The influence of electron beam during vacuum photo-thermal processing (VPP) treatment of metal-silicon contacts, was studied. This is the first experimentally evidence for a novel effect of potential barrier variations in metal-semiconductor contacts following a VPP. The possibility to control the potential barrier in metal-silicon contacts was shown. The same nature of influence of electron beam on the potential barrier between silicon and other metals such as: Ti and Ni were presented as well. The potential barriers in: Ti-Si and Ni-Si were varied from 0.605 to 0.785 eV and from 0.571 to 0.672 eV, respectively. Furthermore, it was found experimentally that the metallic surface order in the metal-silicon pair, following VPP, was dramatically improved. Surface roughness was decreased and the electrical conductivity was increased. Finally, the influence of a non-coherent irradiation on the properties of metal-silicon contacts was studied.

Original languageEnglish
Pages (from-to)871-879
Number of pages9
JournalMicroelectronics Reliability
Volume41
Issue number6
DOIs
StatePublished - Jun 2001
Externally publishedYes

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