Journal
MATERIALS LETTERS
Volume 64, Issue 20, Pages 2233-2235Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2010.07.020
Keywords
BiFeO3; Optical properties; Ferroelectric; Photovoltaic effect
Funding
- National Natural Science Foundation of China [60990312]
- Science and Technology Commission of Shanghai Municipality [10JC1404600]
- State Key Basic Research Program of China [2007CB924902]
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Single-phase multiferroic BiEeO(3) thin films have been prepared on LaNiO3/Si(100) and Si(100) wafer via sol-gel technique. The films are polycrystalline with preferring orientation of (101). The film has a conspicuous absorption in the blue and green light region, and band gap of 2.74 eV. The refractive index and the extinction coefficient of the film is about 2.36 and 0.06 at 600 nm, 2.26 and close to zero in the range of 800-1200 nm, respectively. The films also exhibit favorable ferroelectric and dielectric properties. A large photo induced open-circuit voltage was observed, indicating that the film exhibits photovoltaic behaviours. (C) 2010 Elsevier B.V. All rights reserved.
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