Organic dyes capable of significant absorption in the near-IR (NIR) have become a promising area of research as a result of their application as dye sensitizers in solar cells. Major factors limiting the ability of dye-sensitized solar cells (DSSCs) from converting solar energy into usable electricity are the inability of these dyes to absorb low energy photons in the NIR and IR window and poor electron injection efficiencies. Unfortunately, these two problems are intimately related and improving NIR absorbance often comes with a decreased injection efficiency. Since the NIR and IR window makes up a significant portion of the photons emitted by the sun, shifting and broadening the absorption of these dyes to lower energy is seen as necessary before DSSCs can become a commercially viable source of alternative energy. Here, the photophysical properties and injection efficiencies of a series of novel NIR absorbing dyes are investigated on different TiO<sub>2</sub> based substrates and at the single molecule level.

Photophysical investigation of electron ejection efficiencies of novel organic near-IR absorbing dyes into TiO<sub>2</sub> based semiconductor surfaces for dye-sensitized solar cell applications

253rd National Meeting (2017)

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Photophysical investigation of electron ejection efficiencies of novel organic near-IR absorbing dyes into TiO2 based semiconductor surfaces for dye-sensitized solar cell applications

Photophysical investigation of electron ejection efficiencies of novel organic near-IR absorbing dyes into TiO₂ based semiconductor surfaces for dye-sensitized solar cell applications