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HL: Fachverband Halbleiterphysik

HL 9: Poster 1

HL 9.58: Poster

Montag, 23. März 2009, 14:30–17:00, P2

Growth and characterization of ZnO nanostructures for hybrid solar cells — •Florian Maier-Flaig¹, Johannes Fallert¹, Janos Sartor¹, Jonas Conradt¹, Manuel Reinhard², Alexander Colsmann², Uli Lemmer², Daniel Weissenberger³, Dagmar Gerthsen³, Claus Klingshirn¹, and Heinz Kalt¹ — ¹Institut für Angewandte Physik, Universität Karlsruhe (TH), Germany — ²Lichttechnisches Institut, Universität Karlsruhe (TH), Germany — ³Laboratorium für Elektronenmikroskopie, Universität Karlsruhe (TH), Germany

Among the multitude of prospects of ZnO-nanostructures, recently their integration in hybrid solar cells has attracted a large interest. In this contribution we show our results in growth of ZnO-nanostructures used for solar cells. The underling vapour-liquid-solid (VLS) growth has been optimized to achieve a high density of thin nanowires with a suitable length. First, we point out the influence of different conducting substrates on the manner of growth. For the realization of efficient solar cells a high conductivity through these nanowires and the connected substrate is of crucial importance. Therefore additional doping has successfully been introduced in the wires by the simple choice of the conducting substrate, shown via photoluminescence measurements. Finally we present first results of dye-sensitized hybrid solar cells based on ZnO-nanostructures.