| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Characterization of Supramolecular Electrolytes for Highly Efficient Solid State Dye-Sensitized Solar Cells |
| 초록 |
Oligomeric supramolecules containing multiple (double (2H-P), triple (3H-P), and quadruple (4H-P)) hydrogen bonding sites at both chain ends of the PEG oligomers were utilized to improve the energy conversion efficiency for solid state dye-sensitized solar cells. The improved efficiency was primarily due to the better interfacial contact by deeper penetration of the oligomeric supramolecules into the nanopores of the TiO2 layer and also to the increased ionic conductivity. The electron diffusion coefficient and lifetime through the TiO2 layer were measured by stepped-light induced modulated photocurrent and photovoltage method (SLIM-PCV). The diffusion coefficients of iodide inside the polymer electrolyte comprising multiple hydrogen bonds were also obtained using linear sweep voltammetry(LSV). The 2H-P and 3H-P electrolytes showed faster ionic diffusion and longer electron lifetime than the 4H-P one, resulting in higher energy conversion efficiency of ~4.5% at 1 sun condition. |
| 저자 |
전라선1, 강용수1, 박수일1, 정준혁1, 이용건2
|
| 소속 |
1한양대, 2서울대 |
| 키워드 |
Supramolecules; Polymer electrolyte; Dye-sensitized solar cell
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| E-Mail |
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