The space charge effect on the photocurrent of the Pt-sandwiched Pb(Zr0.20Ti0.80)O3 (PZT) films was investigated. The films were prepared under different annealing temperatures and atmospheres to control the densities of space charges in the PZT films. By testing the short-circuit photocurrent after the films were poled under different voltages and correlating the loops of the static photocurrent-poling voltage with the dynamic polarization-switching voltage, it was manifested that the space charges, especially the time-dependent trapped charges, affected significantly the photoelectric properties of the PZT films through an indirect way of influencing the Schottky barrier in the Pt/PZT/Pt capacitors.
Published in:
Journal of Applied Physics
(Volume:106
,
Issue:
11
)
Date of Publication:
Dec 2009
- Page(s):
-
113705
-
113705-5
- ISSN :
-
0021-8979
- Digital Object Identifier :
-
10.1063/1.3265999
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
08 December 2009
- Issue Date :
-
Dec 2009