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Título

Origin of light-harvesting enhancement in colloidal-photonic-crystal-based dye-sensitized solar cells

Autor Mihi, Agustín; Míguez, Hernán
Fecha de publicación 2005
EditorAmerican Chemical Society
Citación Journal of Physical Chemistry B 109: 15968- 15976 (2005)
ResumenThe effect of the presence of a photonic crystal on the optical absorption of dye-sensitized titanium oxide solar cells is theoretically investigated herein. Different configurations in which a colloidal crystal can be implemented in such devices are modeled, and their absorptances compared. Experimental results on light-harvesting enhancement recently reported for periodically structured photoelectrodes are satisfactorily explained in terms of the appearance of multiple resonant modes localized in the absorbing layer when this is deposited onto one of the optical lattice surfaces. Longer matter-radiation interaction times for such frequencies result in higher absorption of those modes when compared to standard dye-sensitized solar cells. The effect of the finite size and the different characteristics of the photonic crystal on the optical absorption amplification effect is also discussed, new perspectives for colloidal-crystal-based photovoltaics being proposed. © 2005 American Chemical Society.
URI http://hdl.handle.net/10261/101446
DOI10.1021/jp051828g
Identificadoresdoi: 10.1021/jp051828g
issn: 1520-6106
Aparece en las colecciones: (ICMS) Artículos
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