Charge recombination in conjugated polymer/fullerene blended films studied by transient absorption spectroscopy

Article Abstract:

The recombination dynamics of long-lived photogenerated charge carriers were investigated by transient absorption spectroscopy in a blend of poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1-4-phenylene vinylene], (MDMO-PPV) and 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)-C61 (PCBM) at room temperature. It concluded that following low-intensity excitation of MDMO-PPV/PCBM blend, MDMO-PPV polarons were trapped in an inhomogeneous distribution of localized states above the mobility edge for the polymer valence bond.

Analysis, Absorption spectra, Fullerenes

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Hybrid polymer/zinc oxide photovoltaic devices with vertically oriented ZnO nanorods and an amphiphilic molecular interface layer

Article Abstract:

The effect of nanoparticle morphology and interfacial modification on the performance of hybrid polymer/zinc oxide photovoltaic devices is reported. A photovoltaic device based on the nanorod structure that was treated with an amphiphilic dye before deposition of the poly-3-hexylthiophene (P3HT) polymer yields a power conversion efficiency over four times greater than that for a similar device based on the nanoparticle structure.

Zinc oxide, Nanoparticles

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Electron transfer dynamics in dye sensitized nanocrystalline solar cells using a polymer electrolyte

Article Abstract:

A nanosecond -millisecond transient absorption spectroscopy to evaluate the electron transfer dynamics in synthesized nanocrystalline solar cells using a polymer electrolyte and to relate these kinetics studies to solar cell function are described. The charge recombination dynamics in solar cell are not strongly dependent upon the TiO2 Fermi level over the voltage range.

All Other Miscellaneous Chemical Product and Preparation Manufacturing, Chemical preparations, not elsewhere classified, Polyelectrolytes, Usage, Electron transport, Solar cells, Solar batteries

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