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Fast Non-Contact Dielectric Characterization for SiC MOS Processing

Journal Materials Science Forum (Volumes 527 - 529)
Volume Silicon Carbide and Related Materials 2005
Edited by Robert P. Devaty, David J. Larkin and Stephen E. Saddow
Pages 1035-1038
DOI 10.4028/www.scientific.net/MSF.527-529.1035
Citation A.M. Hoff et al., 2006, Materials Science Forum, 527-529, 1035
Online since October, 2006
Authors A.M. Hoff, E. Oborina
Keywords Capacitance Equivalent Thickness, Corona, Metrology, Non-Contact, vcpd
Abstract

Non-contact corona-voltage metrology is utilized to characterize as-grown thermal oxide films on 4H SiC substrates. Contact potential difference mapping is coupled with incremental application of corona charge to provide whole-wafer images of process related effects and multiplepoint capacitance-voltage characteristics respectively. Correspondence between wafer VCPD images and process details is suggested along with examples of fast electrical dielectric thickness determination and non-contact C-V characteristic acquisition.

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