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Investigation of the Silicon Nitride on Hydrogenated Amorphous Silicon Interface

Published online by Cambridge University Press:  25 February 2011

A. V. Gelatos
Affiliation:
IBM Research Division, T.J. Watson Research Center, Yorktown Heights, N.Y. 10598.
J. Kanicki
Affiliation:
IBM Research Division, T.J. Watson Research Center, Yorktown Heights, N.Y. 10598.
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Abstract

We report on our investigation of the silicon nitride on hydrogenated amorphous silicon interface by high frequency capacitance-voltage measurements. We show evidence for the existence of a large number of interface states at energies less than or equal to 0.36 eV below the hydrogenated amorphous silicon conduction band. In addition, we demonstrate that the states responsible for the hysteresis in capacitance-voltage characteristics are located in the silicon nitride layer. Finally, we argue that the ability of hydrogenated amorphous silicon to act as hole diffusion barrier is responsible for the observed flat-band voltage shift.

Type
Research Article
Copyright
Copyright © Materials Research Society 1989

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References

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