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Metastable Non-Equilibrium Conductance States in Doping-Modulated a-Si:H Multilayers

Published online by Cambridge University Press:  26 February 2011

H. Fritzsche ,
S.-H. Yang  and
J. Takada
H. Fritzsche
Affiliation:
James Franck Institute, The University of Chicago, 5640 Ellis Ave., Chicago, IL 60637
S.-H. Yang
Affiliation:
Department of Physics Education, Kyungpook National University, Daegu 635, Korea
J. Takada
Affiliation:
Central Research Lab., Kanegafuchi Chemical Industries Co., Kobe 652, Japan
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Abstract

In doping-modulated a-Si:H multilayers metastable excess conductance states can be excited by brief illumination. In addition to these so-called persistent photoconductivities (PPC) we observe new metastable conductance states by bias-cooling the dopingmodulated multilayers from a temperature Ta≥130° C. These metastable states exhibit greatly different nonlinear current-voltage characteristics both parallel and perpendicular to the layers. Furthermore, the magnitude of the PPC as well as the relaxation of the PPC to equilibrium are strongly affected by applying a bias during illumination and during relaxa-tion, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 118: Symposium E – Amorphous Silicon Technology , 1988 , 275
Copyright
Copyright © Materials Research Society 1988

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