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> (1991) A lowcost, high efficiency solar cell based, on dye-sensitized colloidal TiO2 films
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(1991) A low-cost, high efficiency solar cell based on dye-sensitized colloidal TiO2 films
Источники:
- https://www.researchgate.net/publication/37...idal_TiO2_Films (1990)
- http://www.sciepub.com/reference/113904

Авторы: B. O’Regan and M. Grätzel

QUOTE
HE large-scale use of photovoltaic devices for electricity generation is prohibitively expensive at present: generation from existing commercial devices costs about ten times more than conventional methods1. Here we describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency. The device is based on a 10-μm-thick, optically transparent film of titanium dioxide particles a few nanometres in size, coated with a monolayer of a charge-transfer dye to sensitize the film for light harvesting. Because of the high surface area of the semiconductor film and the ideal spectral characteristics of the dye, the device harvests a high proportion of the incident solar energy flux (46%) and shows exceptionally high efficiencies for the conversion of incident photons to electrical current (more than 80%). The overall light-to-electric energy conversion yield is 7.1-7.9% in simulated solar light and 12% in diffuse daylight. The large current densities (greater than 12 mA cm-2) and exceptional stability (sustaining at least five million turnovers without decomposition), as well as the low cost, make practical applications feasible.


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