TITLE

Quantitative scanning capacitance spectroscopy

AUTHOR(S)
Brezna, W.; Schramboeck, M.; Lugstein, A.; Harasek, S.; Enichlmair, H.; Bertagnolli, E.; Gornik, E.; Smoliner, J.
PUB. DATE
November 2003
SOURCE
Applied Physics Letters;11/17/2003, Vol. 83 Issue 20, p4253
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this work, a setup for quantitative scanning capacitance spectroscopy is introduced, where an ultrahigh precision, calibrated capacitance bridge is used together with a commercially available atomic force microscope (AFM). We show that capacitance data measured with this setup are of comparable quality as data obtained on macroscopic metal oxide semiconductor capacitors. In addition, our setup is sensitive enough to resolve the energy distribution of interface traps with the spatial resolution of an AFM. This is an advantage compared to conventional scanning capacitance microscopes, which have a limited energy resolution and only yield qualitative results due to large modulation voltages. © 2003 American Institute of Physics.
ACCESSION #
11421563

 

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