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Berlin 2015 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 39: Poster Session II

DS 39.28: Poster

Donnerstag, 19. März 2015, 16:00–18:30, Poster F

Electrodeposited Al-doped ZnO used in Hybrid Organic-Inorganic Solar Cells — •Nadine Dannehl1,2, Jennifer T. Damasco Ty1, Hisao Yanagi1, and Derck Schlettwein21Graduate School of Materials Science, Nara Institute of Science and Technology, Nara 630-0192, Japan — 2Institute of Applied Physics, Justus-Liebig-University Gießen, D-35390 Giessen

Hybrid organic-inorganic solar cells which use dyes as absorbers, polymers as donors and inorganic nanostructures as acceptors combine the advantages of organic and inorganic materials. In our study, we investigate hybrid solar cells fabricated with Al-doped zinc oxide (AZO) grown by electrochemical deposition using AlCl3 as aluminum source. The AZO films with different Al:Zn molar ratios (0.5%, 2.5%, 5.0%) were grown on ZnO- and AZO-seeded Indium-Tin-Oxide (ITO) substrates. The seed layers were deposited by spin-coating methanolic precursor solutions of the respective metal salts onto ITO-substrates followed by annealing. To fabricate the cells a solution of 1:1 poly(3-hexylthiophen) (P3HT) and [6,6]-Phenyl C61 butyric acid methyl ester (PCBM) in 1:1 chlorobenzene and trichlorobenzene was spin-coated onto the electrodeposited AZO layer. A MoO3 electron-blocking layer and a Au electrode were vapor-deposited on top of the organic layer to complete the cells. Nanorods with diameters of about 40 nm and high vertical orientation were obtained from electrolyte solutions with 0.5% Al:Zn molar ratios. The solar cells fabricated from these nanorod array structures achieved efficiencies up to 1.1% showing the principle applicability of such layers.

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