11 September 2013 Characterization of N3 dye adsorption on TiO2 using quartz-crystal microbalance with dissipation monitoring
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Abstract
Understanding the kinetics of dye adsorption on semiconductors is crucial for designing dye-sensitized solar cells (DSSCs) with enhanced efficiency. Harms et al. recently applied the Quartz-Crystal Microbalance with Dissipation Monitoring (QCM-D) to study in situ dye adsorption on flat TiO2 surfaces. QCM-D measures adsorption in real time and therefore allows one to determine the kinetics of the process. In this work, we characterize the adsorption of N3, a commercial RuBipy dye, using the native oxide layer of a titanium sensor to simulate the TiO2 substrate of a DSSC. We report equilibrium constants that are in agreement with previous absorbance studies of N3 adsorption, and therefore demonstrate the native oxide layer of a titanium sensor as a valid and readily available planar TiO2 morphology to study dye adsorption.
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Hannah K. Wayment-Steele, Lewis E. Johnson, Matthew C. Dixon, Malkiat S. Johal, "Characterization of N3 dye adsorption on TiO2 using quartz-crystal microbalance with dissipation monitoring", Proc. SPIE 8823, Thin Film Solar Technology V, 882309 (11 September 2013); doi: 10.1117/12.2023654; https://doi.org/10.1117/12.2023654
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