Ultraviolet photovoltaic effect in BiFeO3/Nb-SrTiO3 heterostructure

Ultraviolet photovoltaic effect in BiFeO3/Nb-SrTiO3 heterostructure

We report on ultraviolet photovoltaic effects in a BiFeO3/Nb-doped SrTiO3 heterostructure prepared by a pulsed laser deposition method. The heterostructure exhibits rectifying behaviors in the temperature range from 80 K to 300 K. The photovoltage of heterostructure is about 0.33 V at T = 80 K when...

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Bibliographic Details
Main Authors: Li, H., Jin, K. X., Yang, S. H., Wang, J., He, M., Luo, B. C., Wang, J. Y., Chen, C. L., Wu, Tom
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2013
Subjects:
DRNTU::Science::Chemistry::Physical chemistry::Photochemistry
Online Access:https://hdl.handle.net/10356/94811
http://hdl.handle.net/10220/9259
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Institution: Nanyang Technological University
Language: English
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Summary:We report on ultraviolet photovoltaic effects in a BiFeO3/Nb-doped SrTiO3 heterostructure prepared by a pulsed laser deposition method. The heterostructure exhibits rectifying behaviors in the temperature range from 80 K to 300 K. The photovoltage of heterostructure is about 0.33 V at T = 80 K when it is illuminated by a KrF excimer laser with a wavelength of 248 nm. The peak photovoltages decrease with increasing the temperature because of the accumulation of photogenerated carriers. Moreover, the peak photovoltages of heterostructure almost linearly increase with an increase of the power density of laser at T = 300 K. The results reveal some properties that may be useful for possible applications in multiferroic photoelectric devices.

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