Ferroelectric photovoltaic properties in doubly substituted (Bi0.9La0.1)(Fe0.97Ta0.03)O3 thin films
Abstract
Doubly substituted [Bi0.9La0.1][Fe0.97Ta0.03]O3 (BLFTO) films were fabricated on Pt/TiO2/SiO2/Si substrates by pulsed laser deposition. The ferroelectric photovoltaic properties of ZnO:Al/BLFTO/Pt thin film capacitor structures were evaluated under white light illumination. The open circuit voltage and short circuit current density were observed to be ∼0.20 V and ∼1.35 mA/cm2, respectively. The band gap of the films was determined to be ∼2.66 eV, slightly less than that of pure BiFeO3 (2.67 eV). The PVproperties of BLFTO thin films were also studied for various pairs of planar electrodes in different directions in polycrystalline thin films.
Citation
Katiyar , R K , Sharma , Y , Barrionuevo , D , Kooriyattil , S , Pavunny , S P , Young , J S , Morell , G , Weiner , B R , Katiyar , R S & Scott , J F 2015 , ' Ferroelectric photovoltaic properties in doubly substituted (Bi 0.9 La 0.1 )(Fe 0.97 Ta 0.03 )O 3 thin films ' , Applied Physics Letters , vol. 106 , no. 8 , 082903 . https://doi.org/10.1063/1.4908254
Publication
Applied Physics Letters
Status
Peer reviewed
ISSN
0003-6951Type
Journal article
Rights
© 2015 AIP Publishing LLC. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1063/1.4908254.
Description
This work was supported by the DOE-EPSCoR Grant No. DE-FG02-08ER46526. Acknowledgment is also due to NSF Grant No. #1002410 for providing fellowships to R.K.K., D.B., and J.S.Y.Collections
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