Abstract

It is shown that ZnO single crystals can be used for electrophotographic processes in the same manner as ZnO layers. This is due to the formation of a Schottky barrier at the surface under glow discharge giving a highly resistive layer that is capable of storing the deposited charge for several hours. The decay of the charge in the dark and the discharge mechanism under illumination and its wavelength dependence have been investigated. The results are analyzed in terms of the theory that was developed for ZnO powder-binder layers Good agreement is achieved. The physical model developed for ZnO layers appears to apply to ZnO single crystals also.

© 1969 Optical Society of America

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