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HL: Fachverband Halbleiterphysik

HL 44: Poster Session I

HL 44.54: Poster

Dienstag, 15. März 2011, 18:00–21:00, P3

Hydrothermal growth of ZnO nanorods for optoelectronic and photovoltaic applications — •Marco Braun¹, Jonas Conradt^1,2, Janos Sartor¹, Dirk Silber¹, Manuel Reinhard³, Alexander Colsmann³, Uli Lemmer³, and Heinz Kalt^1,2 — ¹Karlsruher Institut für Technologie (KIT), Institut für Angewandte Physik, 76128 Karlsruhe, Germany — ²Center for Functional Nanostructures (CFN) at KIT — ³Lichttechnisches Institut at KIT

Incorporating low-dimensional nanostructured, wide-band gap semiconductors, such as zinc oxide (ZnO) nanorods, into optoelectronic devices is a promising approach in order to realize UV light-emitting diodes. The nanorod structure can help to improve guiding and out-coupling of light and device efficiency. We present results on the growth of ZnO nanorods on various substrates using low-temperature, hydrothermal growth. An alternative high-temperature growth method is used to produce longer ZnO nanorods, e.g. on silicon substrates. The nanostructures are characterized by scanning electron microscopy and photoluminescence spectroscopy. We also present a simple method for electrical contacting and first results of electroluminescence measurements.