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Title: Hyper-sensitive piezophotovoltaic effects in ferroelectric nanocylinders
Authors: Zheng, Y
Woo, CH 
Keywords: Dielectric polarisation
Ferroelectric materials
Ferroelectric transitions
Lanthanum compounds
Lead compounds
Photovoltaic effects
Short-circuit currents
Issue Date: 15-May-2010
Publisher: American Institute of Physics
Source: Journal of applied physics, 15 May 2010, v. 107, no. 10, 104120, p. 1-7 How to cite?
Journal: Journal of applied physics 
Abstract: Photocurrent system of the ferroelectric nanocylinder (FNC), including nanodisks, nanorods, and nanowires, sandwiched between metal electrodes with the short-circuit boundary conditions has been designed and investigated. Taking into account the polarization charge screening in the electrodes and near-surface inhomogeneous polarization distribution, a theoretical model for investigating the photoinduced current of the FNC under the illumination of light was established. Our results show that the photocurrent of the FNC can be totally controlled by adjusting its size and states of the polarization “up” and “down.” Especially, reversing an applied stress can obviously change the photocurrent of the FNC, which is particularly significant near the stress-dependent para/ferroelectric phase transition. This piezophotovoltaic effect may have good potential for applications in high-sensitivity photomechanical sensors, memories, switchable nanodevices, or other photovoltaic nanodevices.
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.3428477
Rights: © 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Y. Zheng & C.H. Woo, J. Appl. Phys. 107, 104120 (2010) and may be found at
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