Modulating optical and electrical properties of TiO2 photoanode in dye-sensitized solar cells

TL;DRAbstract

Dye-sensitized solar cells (DSCs) are promising photovoltaics because of their low cost and facile fabrication process. The difference between DSC and other conventional solar cells is that it separates the photoelectron generation and charge transporting functions. The dye absorbs light, is excited and injects an electron into the semiconducting oxide which transports it away. The important reactions in DSC occur at the interfaces of these materials, hence the interactions between them are critical to the device performance. Light harvesting in DSCs can be improved by developing sensitizers with broad absorption spectra and high extinction coefficient or by designing semiconductor nanostructures that can enhance optical properties through phenomena such as plasmonics, photonic confinement or light scattering. This thesis focuses on a new TiO 2 nanostructure for the DSC photoanode that can enhance light harvesting while increasing film porosity. The photoanode was modified by incorpora

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