Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 19, Issue 7, Pages 1093-1099Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200801540
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Funding
- KIST internal project
- Korea research council of Fundamental Science and Technology
- Sejong University
- National Research Council of Science & Technology (NST), Republic of Korea [2E20980] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Compact inverse-opal structures are constructed using non-aggregated TiO2 nanoparticles in a three-dimensional colloidal array template as the photoelectrode of a dye-sensitized solar cell. Organic-layer-coated titania nanoparticles show an enhanced infiltration and a compact the 3D array. Subsequent thermal decomposition to remove the organic template followed by impregnation with N-719 dye results in excellent inverse-opal photoelectrodes with a photo-conversion efficiency 3.47% under air mass 1.5 illumination. This colloidal-template approach using non-aggregated nanoparticles provides a simple and versatile way to produce efficient inverse-opal structures with the ability to control parameters such as cavity diameter and film thickness.
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