Molecular Scale Characterization of the Titania-Dye-Solvent Interface in Dye-Sensitized Solar Cells

作者：Marquet Philip; Andersson Gunther; Snedden Alan; Kloo Lars; Atkin Rob^*

来源：Langmuir, 2010, 26(12): 9612-9616.

DOI：10.1021/la100193w

Charge separation at the dye/titania interface in dye sensitized solar cells is strongly influenced by the thickness and homogeneity of the sensitizing dye layer, as this controls the potential drop across the interface, and the probability of an excited electron being transferred from the dye to the titania. In this study we use atomic force microscopy and the depth profiling method neutral impact collision ion scattering spectroscopy (NICISS) to investigate the thickness and homogeneity of N719 dye adsorbed to titania before and after rinsing with pure acetonitrile. Both experimental methods show that the dye layers are closed but inhomogencous. Inhomogeneity is more pronounced for unrinsed samples.

• 出版日期2010-6-15