Compact Inverse‐Opal Electrode Using Non‐Aggregated TiO2 Nanoparticles for Dye‐Sensitized Solar Cells |
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Authors: | Eun Sik Kwak Wonmok Lee Nam‐Gyu Park Junkyung Kim Hyunjung Lee |
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Affiliation: | 1. Material Science Division Korea Institute of Science and Technology 39‐1 Hawolgok‐dong Seongbuk‐gu Seoul, 130‐650 (Korea);2. Department of Chemistry, Sejong University 98 Gunja‐dong, Gwangjin‐gu, Seoul, 143‐747 (Korea) |
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Abstract: | 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 packing within 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 as high as 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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Keywords: | colloid templates dye‐sensitized solar cells nanoparticles solar cells titanium dioxide |
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