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Dye sensitized solar cells based on vertically-aligned ZnO nanorods: effect of UV light on power conversion efficiency and lifetime

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2010 Spain Publisher:Royal Society of Chemistry (RSC)Journal:Energy & Environmental Science, volume 3, page 789 (issn: 1754-5692, eissn: 1754-5706,

Authors: González-Valls, Irene; Lira-Cantú, Mónica;

doi: 10.1039/b922354a

handle: 10261/48629

Dye sensitized solar cells based on vertically-aligned ZnO nanorods: effect of UV light on power conversion efficiency and lifetime

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Abstract

7 páginas, 6 figuras, 2 tablas. Electrodes made of vertically-aligned ZnO nanorods (NRs) have been prepared and analyzed in dye sensitized solar cells (DSC). We report a 20% power conversion efficiency increase during the first hours of solar cell testing at 1000 W m−2 (AM 1.5). The latter has been attributed to the physisorption/chemisorption of the N-719 dye on the ZnO NRs induced by UV-light irradiation. The ZnO NRs were grown by the hydrothermal method for 6 h obtaining a ZnO layer thickness of about 1.8 μm. The highest solar cell efficiency obtained was 0.69% after UV light irradiation (at 72 °C, 0.63 V, 2.85 mA cm−2, 0.39 FF). The effect of UV light has been monitored by UV-VIS, IV-curves and IPCE analyses with time, and has been related to the solar cell performance. To the projects ENE2008-04373 and PIE-200860I134 and the PhD scholarship awarded to I. G-V (BES-2009-028996) from the Spanish Ministry of Science and Innovation, MICINN. To the Consolider NANOSELECT project CSD2007-00041. Peer reviewed

Country

Spain

Related Organizations

Spanish National Research Council
Spain

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