Materials 2009, 2(3), 1388-1401; doi:10.3390/ma2031388
Article

Optical Properties of Nitrogen-Substituted Strontium Titanate Thin Films Prepared by Pulsed Laser Deposition

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Received: 27 August 2009; in revised form: 17 September 2009 / Accepted: 21 September 2009 / Published: 22 September 2009
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Perovskite-type N-substituted SrTiO3 thin films with a preferential (001) orientation were grown by pulsed laser deposition on (001)-oriented MgO and LaAlO3 substrates. Application of N2 or ammonia using a synchronized reactive gas pulse produces SrTiO3-x:Nx films with a nitrogen content of up to 4.1 at.% if prepared with the NH3 gas pulse at a substrate temperature of 720 °C. Incorporating nitrogen in SrTiO3 results in an optical absorption at 370-460 nm associated with localized N(2p) orbitals. The estimated energy of these levels is ≈2.7 eV below the conduction band. In addition, the optical absorption increases gradually with increasing nitrogen content.
Keywords: oxynitrides; strontium titanate; pulsed laser deposition; thin films; optical properties
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MDPI and ACS Style

Marozau, I.; Shkabko, A.; Döbeli, M.; Lippert, T.; Logvinovich, D.; Mallepell, M.; Schneider, C.W.; Weidenkaff, A.; Wokaun, A. Optical Properties of Nitrogen-Substituted Strontium Titanate Thin Films Prepared by Pulsed Laser Deposition. Materials 2009, 2, 1388-1401.

AMA Style

Marozau I, Shkabko A, Döbeli M, Lippert T, Logvinovich D, Mallepell M, Schneider CW, Weidenkaff A, Wokaun A. Optical Properties of Nitrogen-Substituted Strontium Titanate Thin Films Prepared by Pulsed Laser Deposition. Materials. 2009; 2(3):1388-1401.

Chicago/Turabian Style

Marozau, Ivan; Shkabko, Andrey; Döbeli, Max; Lippert, Thomas; Logvinovich, Dimitri; Mallepell, Marc; Schneider, Christof W.; Weidenkaff, Anke; Wokaun, Alexander. 2009. "Optical Properties of Nitrogen-Substituted Strontium Titanate Thin Films Prepared by Pulsed Laser Deposition." Materials 2, no. 3: 1388-1401.

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