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Titel:
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Spectral response and response time of nanocrystalline dye-sensitized TiO2 solar cells
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Auteur(s):
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Gepubliceerd door:
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Publicatie datum:
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ECN
Zonne-energie
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1997
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ECN publicatienummer:
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Publicatie type:
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ECN-RX--97-034
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Artikel wetenschap tijdschrift
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Aantal pagina's:
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6
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Gepubliceerd in: Paper, presented at the 14th European photovoltaic solar energy conference and exhibition, 30 June - 4 July 1997, Barcelona, Spa (), , , Vol., p.-.
Samenvatting:
A new type of photovoltaic conversion of light based on dye sensitizednanocrystalline titanium dioxide (TiO2) has been developed by M. Graetzel and
co-workers. High efficiencies were reported for this type of photovoltaic
conversion. For the correct quantification of efficiencies a standard
procedure with certified equipment is prescribed. This includes determination
of the spectral response of the solar cell according to the ASTM E1021-84
norm. In this method the cell is continuously irradiated under one sun
working conditions. The spectral response is revealed using pulsed
monochromatic illumination by means of a chopped light beam. Since this type
of solar cell has a slower response to pulsed irradiation than crystalline
silicon cells, there is a need to verify if the standard method for spectral
response measurement is valid for this type of cells. In the present paper it
is shown that this is the case. The influence of electrolyte viscosity on ion
transport limitation and on the response time is investigated. Response times
are determined for monochromatic irradiation with and without continuous bias
illumination. In this paper it will be shown that introduction of ion
transport limitation does not affect the time response of the cell. 7 figs.,
6 refs.
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