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DF: Fachverband Dielektrische Festkörper

DF 13: Poster II

DF 13.14: Poster

Mittwoch, 28. März 2012, 15:00–17:30, Poster E

Correlation between size evolution and optical properties of ion beam synthesized silver nanoclusters in lithium niobate — •Jura Rensberg, Steffen Milz, Carsten Ronning, and Werner Wesch — Institut für Festkörperphysik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany

Metal nanoclusters embedded in various dielectrics gained a lot of interest for plasmonic applications like optical filters or plasmonic wave- guides in the last two decades. Because of its unique electro-optical and nonlinear optical properties, lithium niobate (LiNbO₃) is one of the most important materials for integrated optics. Noble metals like silver are of particular relevance for cluster formation in LiNbO₃, because of its distinctive surface plasmon resonance (SPR) located in the visible spectral range. We have implanted 380 keV Ag⁺ ions up to an ion fluence of 1x10¹⁷ cm⁻² into LiNbO₃ at room temperature and 673 K. Isochronal rapid thermal annealing as well as isothermal annealing were performed in the temperature range of 573 K to 1173 K, resulting in the formation of silver nanoclusters with different size distributions and a reduction of irradiation damage. The samples were analyzed by means of RBS-channeling, and STEM as well as optical spectroscopy. The correlation between structural and optical properties will be discussed in detail in this study.