Optical properties of BaTiO3/ZnO heterostructures under the effect of an applied bias
| Autor: | Marius Grundmann, Chris Sturm, S. Schöche, T. Böntgen, Michael Lorenz, Matthias Brandt, Holger Hochmuth, Rüdiger Schmidt-Grund |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
business.industry Band gap Metals and Alloys Physics::Optics Heterojunction Surfaces and Interfaces Ferroelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials Pulsed laser deposition Condensed Matter::Materials Science Polarization density Optics Materials Chemistry Spectroscopic ellipsometry Optoelectronics Dielectric function business Layer (electronics) |
| Zdroj: | Thin Solid Films. 519:2933-2935 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2010.12.064 |
| Popis: | We report electro-optical measurements of BaTiO 3 /ZnO heterostructures grown by pulsed laser deposition. The optical properties of the heterostructures were examined with and without an applied bias. A change in the heterostructure optical properties is found and attributed to a linear electro-optical effect causing a change in the band gap. Moreover the formation of an electric polarization in the BaTiO 3 layer causes a remanent change in the dielectric function if the bias is removed. The change could be estimated to be around 5meV. |
| Databáze: | OpenAIRE |
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