| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Low Temperature Fabrication of TiO2 Electrodes for Highly Efficient and Stable Flexible DSSCs |
| 초록 |
Hierarchically structured TiO2 (HS-TiO2) was prepared on a flexible ITO-PEN substrate via electrospray deposition using a P25 powder in order to fabricate flexible DSSCs under low-temperature (150°C) conditions. The cell efficiency increased when using flexible ITO-PEN substrates post-treated by either a mechanical compression treatment or a chemical sintering treatment using titanium tetrabutoxide (TTB). An additional chemical sintering post-treatment involving TTB after compression treatment yielded faster electron diffusion, providing an efficiency of 5.57%. Finally, we revealed the binding mode of N719 on low-temperature processed HS-TiO2 surface and demonstrated strongly bound of N719 dyes on HS-TiO2 surfaces using stearic acid (SA) as coadsorbent. We found that the SA-treatment enabled the dye to anchor strongly on TiO2 surface and impeded desorption of anchored dye from TiO2 surface from the analysis of FT-IR and transient absorption spectroscopy. |
| 저자 |
이호림1, 황대섭2, 조성무3, 서용석1, 김동영3
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| 소속 |
1서울대, 2연세대, 3한국과학기술(연) |
| 키워드 |
Flexible; Solar Cells; Low Temperature; Hierarchically Structure
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| E-Mail |
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