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Quantitative Measurement of Dopant Concentration Profiling by Scanning Nonlinear Dielectric Microscopy

Published online by Cambridge University Press:  01 February 2011

Kenya Ishikawa ,
Koichiro Honda  and
Yasuo Cho
Kenya Ishikawa
Affiliation:
[email protected], Tohoku University, Research Institute of Electrical Communication, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan, +81-22-217-5526, +81-22-217-5526
Koichiro Honda
Affiliation:
[email protected], Memory Device Laboratory Fujitsu Laboratories Ltd, 10-1 Morinosato-Wakamiya, Atsugi, 243-0197, Japan
Yasuo Cho
Affiliation:
[email protected], Tohoku University, Research Institute of Electrical Communication, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
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Abstract

Using a scanning nonlinear dielectric microscopy (SNDM), we observed two standard Si samples with epitaxial staircase structures, which have known dopant density values calibrated by using secondary ion mass spectroscopy (SIMS). As the result, good quantitative correlation between dopant density values and SNDM signals was obtained without the phenomenon of contrast reversal effect, which is associated with conventional scanning capacitance microscopy (SCM) measurements. Thus, it is expected that SNDM will be an effective method for observing the quantitative measurement of two-dimensional dopant profiling on semiconductor devices.

Keywords

dopantscanning probe microscopy (SPM)secondary ion mass spectroscopy (SIMS)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1025: Symposium B – Nanoscale Phenomena in Functional Materials by Scanning Probe Microscopy , 2007 , 1025-B12-05
Copyright
Copyright © Materials Research Society 2008

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