Photoconductivity of undoped zno thin films deposited by spray pyrolysis

الملخص EN

The photoconductivity of ZnO thin films prepared by spray pyrolysis of the zinc dehydrated were studied.

The electrical, optical behaviors and structural spectra show an important effect of substrate temperature Ts and deposition time td.

Under illumination, the conductivity of as grown sample increased due to desorption of oxygen.

A small photoconductivity is representative of the electrical behavior of a quasi intrinsic material.

By following cessation of illumination, we remarked a saturation of decay photoconductivity, this can be attributed to traps which captures carriers.