Publication Date:
2013-01-01
Description:
We report on enhanced performance of N719-sensitized TiO2solar cells (DSCs) incorporating size and photoelectron diffusion-controlled TiO2as sensitizer-matched light-scatter layers on conventional nanocrystalline TiO2electrodes. The double-layered N719/TiO2composite electrode with a high dye-loading capacity exhibits the diffused reflectance of more than 50% in the range ofλ = 650–800 nm, even when the films are coupled with the titania nanocrystalline underlayer in the device. As a result, the increased near-infrared light-harvesting produces a high light-to-electricity conversion efficiency of over 9% mainly due to the significant increase ofJsc. Such an optical effect of the NIR-light scattering TiO2electrodes will be beneficial when the sensitizers with low molar extinction coefficients, such as N719, are introduced in the device.
Print ISSN:
1110-662X
Electronic ISSN:
1687-529X
Topics:
Electrical Engineering, Measurement and Control Technology
,
Energy, Environment Protection, Nuclear Power Engineering
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