| 학회 |
한국화학공학회 |
| 학술대회 |
2011년 가을 (10/26 ~ 10/28, 송도컨벤시아) |
| 권호 |
17권 2호, p.1798 |
| 발표분야 |
재료 |
| 제목 |
Pore-size effect in optimizing the photovoltaic performance of dye-sensitized solar cells (DSSCs) composed of mesoporous TiO2 photoelectrodes |
| 초록 |
The mesoporous anatase TiO2 particles are synthesized using a soft template (1) of tri-block copolymer and a hard template (2) of mesoporous ZnO/Zn(OH)2-composite. Both materials produce a high BET surface area of more than 200 m2/g, favorable to a high dye uptake. However, their different pore sizes of 6.8 nm (1) and 3.0 nm (2) lead to different photovoltaic performances of DSSCs. While the TiO2 photoelectrode having larger pores gives a photo-conversion efficiency (η) of 6.71 %, the TiO2 photoelectrode having small pores provides only half the performance (3.05%). For reference, the photo-conversion efficiency is 5.62 % when using P25 TiO2 nanopowders. Mesoporous TiO2 with proper pore size (e.g. 6.8 nm) seems to make the most of its high surface area, thereby allowing a high uptake of dye to enhance the current density. On the other hand, the low efficiency of mesoporous TiO2 with too small pores (e.g. 3 nm) is probably attributed to the low uptake of dye due to the hindered diffusion and adsorption of dye molecule through the pore. |
| 저자 |
원용선1, 윤태관2, 박성수3, 김덕현3, 황용경4, 허 성4, 배재영2
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| 소속 |
1부경대, 2계명대, 3삼성SDI(주), 4한국외국어대 |
| 키워드 |
Dye-sensitized solar cell (DSSC) |
| E-Mail |
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| 원문파일 |
초록 보기 |
