| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Low-Temperature Fabrication of TiO2 Photoelectrodes for Flexible DSSCs Using an Electrospray Process |
| 초록 |
Hierarchically structured TiO2 (HS-TiO2) was prepared on a flexible ITO-PEN substrate via electrospray deposition using a P25 TiO2 powder in order to fabricate flexible DSSCs under low-temperature conditions. The cell efficiency increased by either a mechanical compression treatment or a chemical sintering treatment using titanium tetrabutoxide (TTB). The mechanical compression treatment reduced the surface area and porosity of the HS-TiO2; However, this treatment improved the interparticle connectivity and physical adhesion, which increased the Jsc of the as-preesed HS-TiO2 cells. The electron diffusion coefficients of the as-pressed HS-TiO2 improved upon compression treatment, whereas the recombination lifetimes remained unchanged. An additional chemical sintering post-treatment was tested. The freshly coated TiO2 submitted to TTB hydrolysis in water at 100oC yielded faster electron diffusion, providing an efficiency of 5.57% under 100 mW/cm2, AM 1.5G illumination. |
| 저자 |
이호림1, 황대섭2, 조성무1, 김동호3, 서용석1, 김동영3
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| 소속 |
1한국과학기술(연), 2서울대, 3연세대 |
| 키워드 |
Electrospray; Solar Cells; Flexible
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| E-Mail |
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