Photovoltaic properties of Aurivillius phase Bi{sub 5}FeTi{sub 3}O{sub 15} thin films grown by pulsed laser deposition

Journal Article · Mon Aug 18 04:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4893784· OSTI ID:22310901

Kooriyattil, Sudheendran ^[1]; Katiyar, Rajesh K.; Morell, Gerardo

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1. Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, P.O. Box 70377, San Juan, Puerto Rico 00936-8377 (United States)

We report a remarkable photovoltaic effect in pulsed laser deposited multiferroic aurivillius phase Bi{sub 5}FeTi{sub 3}O{sub 15} (BFTO) thin films sandwiched between ZnO:Al transparent conductive oxide top electrode and SrRuO{sub 3} bottom electrode fabricated on amorphous fused silica substrates. The structural and micro structural properties of these films were analysed by X-ray diffraction and atomic force microscopy techniques. The films were showing a photo sensitive ferroelectric behaviour with a notable apparent polarization in the range of 10–15 μC/cm{sup 2}. These films also exhibited a switchable photo-response and this parameter was observed to be sensitive to polarisation field and the polarization direction. The device shows a large ON/OFF photo current ratio with an open circuit voltage of 0.14 V. The photo response at zero bias of this BFTO based heterostructures showed rapid increase to a saturation value of 6 μA at zero bias.

• OSTI ID: 22310901
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 7 Vol. 105; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC FORCE MICROSCOPY
BISMUTH COMPOUNDS
ELECTRIC POTENTIAL
ELECTRODES
ENERGY BEAM DEPOSITION
FERROELECTRIC MATERIALS
IRON COMPOUNDS
LASER RADIATION
OPACITY
OXYGEN COMPOUNDS
PHOTOVOLTAIC EFFECT
POLARIZATION
RUTHENIUM COMPOUNDS
SILICA
STRONTIUM COMPOUNDS
SUBSTRATES
THIN FILMS
TITANIUM COMPOUNDS
X-RAY DIFFRACTION
ZINC OXIDES