Investigations of the electric field in TiO2/FTO junctions used in dye-senitized solar cells by photocurrent transients

Article Abstract:

An investigation is conducted about the electrostatic potential distribution in compact and nanoporous TiO2 films, deposited on conducting F-doped SnO2 substrate (FTO), which are used in dye-sensitized solar cells. It is revealed that transients of the FTO/compact TiO2/electrolyte system as a function of an externally applied potential or at different solutions pH show equal behavior, while the situation is more complicated for the FTO/porous TiO2/electrolyte system.

Titanium dioxide, Hydrogen-ion concentration, pH

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Chemisorptions determines the photovoltage of a Ti/TiO2/Au/ dye internal electron emission photovoltaic cell

Article Abstract:

The Ti/TiO2/Au junction forms the basis of a promising new type of photovoltaic cell, provided that a light-harvesting antenna layer can be deposited on the thin gold film. The electrical diode characteristics of the TiO2/Au Schottky barrier that deteriorate by deposition of a hydrophobic quantum dot film, Merbromin dye adsorption, or electron-hole photogeneration in TiO2 under inert conditions are reported.

Titanium compounds, Electrons, Electron emission

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Measuring charge transport from transient photovoltage rise times: A new tool to investigate electron transport in nanoparticle films

Article Abstract:

The charge transport rate at open-circuit potential ([V.sub.oc]) can be determined from the transient photovoltage rise time by using a simple, zero-free-parameter model. The relationship between measured transport rate and measured charge density is found to be consistent with the trap limited transport model.

Charge transfer, Nanoparticles

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