| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 봄 (04/23 ~ 04/25, 창원컨벤션센터) |
| 권호 |
20권 1호, p.19 |
| 발표분야 |
고분자 |
| 제목 |
Fabrication of hierarchically-ordered, crack-free TiO2 Films from self-assembly of polystyrene bead and hydrophilically preformed TiO2 |
| 초록 |
Hierarchically-ordered, crack-free TiO2 films were prepared from one-step self-assembly of a 400-nm polystyrene bead and hydrophilically preformed TiO2. There are reported that substantial crack formation of the film occur due to large volume contraction during the calcination process when using Titanium(IV) bis(ammonium lactato) dihydroxide (TALH) as precursor. But, the use of hydrophilically preformed TiO2 can make less cracked films with higher thickness and a meso/macroscopicscale hierarchical structure. Preformed TiO2 particles assembled electrostatically onto surface of the polystyrene bead, as confirmed by scanning electron microscope and a zeta potential analyzer. This TiO2 structures were used as a photoanode of quasi-solid-state dye-sensitized solar cells using a nanogel electrolyte. Efficiency of this preformed TiO2-based cell was 1.8-fold greater than that of a titanium(IV) bis(ammonium lactato) dihydroxide-based cell. |
| 저자 |
임정엽, 허성연, 김동준, 박철훈, 김종학
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| 소속 |
연세대 |
| 키워드 |
dye-sensitized solar cell; polystyrene; preformed; co-assembly
|
| E-Mail |
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| 원문파일 |
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