Analysis of photovoltage decay transients in dye-sensitized solar cells

Article Abstract:

The quasi-static approximation can be used to simplify the theoretical treatment of the open circuit photovoltage decay of dye-sensitized nanostructured solar cells (DSCs), as it removes the need to treat the kinetics of trapping and detrapping explicitly and leads to a straightforward analytical solution in the case of an exponential trap distribution. The numerical calculations have shown that the quasi-static approximation is a useful and simple approach to data analysis, but deviations at short times are important, particularly if the density of trapping states is small.

Nanotechnology, Solar cells, Solar batteries, Photovoltaic cells

---

Grain morphology and trapping effects on electron transport in dye-sensitized nanocrystalline solar cells

Article Abstract:

The combined effects of grain morphology and electron trapping on the transient response of photoelectrons moving through the TiO(sub 2) grains in a dye-sensitized nanocrystalline solar cell are presented using a multitime-scale random walk Monte Carlo model. It is shown that the constrictions at the grain necks slow the electrons, making trapping more likely and hence further delaying their passage to the extracting electrode.

Usage, Electric properties, Titanium compounds, Monte Carlo method, Monte Carlo methods

---

Influence of grain morphology on electron transport in dye sensitized nanocrystalline solar cells

Article Abstract:

A Monte Carlo model of electron transport in mesoporous films of TiO2 particles is presented in which electrons execute a random walk through a chain of spherical grains with traps at the surface of the grains. It is used to simulate transient photocurrents in dye sensitized nanocrystalline solar cells.

Analysis, Titanium dioxide, Chemistry, Physical and theoretical, Physical chemistry, Properties, Solar films

Similar abstracts:

• Abstracts: Interpretation of apparent activation energies for electron transport in dye-sensitized nanocrystalline solar cells
• Abstracts: Influence of a Ti[Cl.sub.4] post-treatment on nanocrystalline Ti[O.sub.2] films in dye-sensitized solar cells
• Abstracts: Synthesis of TiO2 photocatalysts in supercritical CO2 via a non-hydrolytic route. Ultraviolet light-induced hydrophilicity effect on TiO(sub 2)(110)(1x1): Dominant role of the photooxidation of adsorbed hydrocarbons causing wetting by water droplets
• Abstracts: Comparison of water-soluble CdTe nanoparticles synthesized in air and in nitrogen. Full-Color emission and temperature dependence of the luminescence in poly-p-phenylene ethynylene_znsimn2+ composite particles
• Abstracts: Promoting photochromism on flavylium derived 2-hydroxychalcones in aqueous solutions by addition of CTAB micelles

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.