Illumination intensity dependence of the photovoltage in nanostructured TiO2 dye-sensitized solar cells

Article Abstract:

The open-circuit voltage dependence on the illumination intensity under steady-state conditions in both bare and coated nanostructured TiO2 dye-sensitized solar cells is analyzed. The result reveals that the energy of the deep traps seems to be an intrinsic property of the nanostructured TiO2 material while their concentration and the density and distribution of shallow traps change from sample to sample.

Titanium dioxide, Photovoltaic cells

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Origin of light-harvesting enhancement in colloidal-photonic-crystal-based dye-sensitized solar cells

Article Abstract:

The origin of the enhancement of light-harvesting efficiency when a photonic crystal is introduced in dye-sensitized titanium oxide solar cells is studied. Significant light absorption amplification over a wide spectral range occurs only in structures that combine the presence of a photonic crystal and a layer of nanocrystalline structured absorbing material.

Science & research, Research, Photonics, Optical properties, Absorption of light, Light absorption

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Influence of ordering in porous Ti[O.sub.2] layers on electron diffusion

Article Abstract:

The layers of porous Ti[O.sub.2] fabricated by electropheretic deposition at different temperatures with subsequent sintering in air are investigated by transient photocurrent measurements in aqueous electrolyte. The increase in the effective diffusion coefficient is attributed to a higher degree of ordering in the nanoporous Ti[O.sub.2] layer.

Analysis, Titanium compounds, Aqueous solution reactions

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