Berlin 2008 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 31: Poster II
HL 31.69: Poster
Dienstag, 26. Februar 2008, 16:30–19:00, Poster D
Application of Al-doped ZnO-nanocrystals for novel organic–inorganic hybrid solar cells — •Stefan Geissendörfer1, Daniel Rauh1, Ingo Riedel1, Carsten Deibel2, and Vladimir Dyakonov1,2 — 1Bavarian Centre for Applied Energy Research (ZAE Bayern), Functional Materials for Energy Technology, Am Hubland, D-97074 Würzburg — 2Experimental Physics VI, Physical Institute, Julius-Maximilian University of Würzburg, Am Hubland, D-97074 Würzburg
Hybrid solar cells based on polymers and metal oxides combine the advantages of organic and inorganic materials such as high absorption coefficients, efficient charge generation as well as solution-processability. Doped metal oxides are of particular interest as they are inexpensive, environmentally friendly and can be obtained in versatile shapes (dots, rods, porous films). We synthesized aluminium-doped ZnO-nanocrystals (4–7nm) to use them as electron acceptors in hybrid bulk heterojunction devices. For this, a mesoporous matrix is prepared from ZnO:Al-nanoparticle dispersions to be infiltrated by a conjugated polymer acting as electron donor. We present first realizations of hybrid ZnO:Al-poly(alkylthiophene) bulk heterojunction solar cells and discuss their photovoltaic performance in respect of modified active layer morphology and electrode materials.