| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 봄 (04/09 ~ 04/10, 고려대학교) |
| 권호 |
29권 1호, p.356 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Fabrication of Titania Nanostructures for the Application to Highly Efficient Dye-Sensitized Solar Cells |
| 초록 |
Highly ordered structures consisting of nanopores in titania have received considerable attention as three-dimensional photonic crystals. We made nanoporous titania for the application to an electrode of dye-sensitized solar cells (DSSC). Here we show the process of fabricating a titania electrode with an inverse opal structure. Polystyrene (PS) colloid particles slowly crystallize on a conducting glass and form an opal template. Titanium iso-propoxide in ethanol was deposited in the colloidal opal template by precipitation through an alkoxide hydrolysis. Subsequently, the samples were heated to 450°C to form anatase TiO2 and to remove the colloidal template, which resulted in an inverse opal or air-sphere crystal. The inverse opal titania arranged on a face-centered cubic (fcc) lattice were close-packed and interconnected for electronic conduction. This nanoporous texture of the TiO2 electrode is expected to significantly increase the adsorption of surface-anchored charge-transfer sensitizers and the cross-section of light harvesting due to the large suface area. |
| 저자 |
조장, 박정호, 최원산, 김동유
|
| 소속 |
광주과학기술원 신소재공학과 |
| 키워드 |
titania; nanorings; solar cells
|
| E-Mail |
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