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Stepwise Cosensitization of Nanocrystalline TiO 2 Films Utilizing Al 2 O 3 Layers in Dye‐Sensitized Solar Cells

2008; Wiley; Volume: 47; Issue: 43 Linguagem: Inglês

10.1002/anie.200802852

1521-3773

Hyunbong Choi, Sanghoon Kim, Sang Ook Kang, Jaejung Ko, Moon‐Sung Kang, John N. Clifford, Amparo Forneli, Emilio Palomares, Mohammad Khaja Nazeeruddin, Michaël Grätzel,

Quantum Dots Synthesis And Properties

Doubly sensitized: Stepwise cosensitization is carried out on Al2O3-coated nanocrystalline TiO2 layers using two organic dyes (JK-2 and SQ1) having complementary spectral absorption bands in the visible region. The Al2O3 coating results in the retardation of the interfacial charge recombination dynamics at the oxide/sensitizer interface and improves the overall performance of the dye-sensitized solar cells. CB=conduction band. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z802852_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.