| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
분자전자용 소재 및 소자 |
| 제목 |
A Functionalized Coadsorbent as an Alternative Deoxycholic Acid for Highly Efficient Dye-sensitized Solar Cells |
| 초록 |
We have synthesized a 4-(3,6-bis(4-(2-ethylhexyloxy)-9H-carbazol-9-yl)benzoic acid (bEHCBA) as an alternative coadsorbent to DCA or CA derivatives. The introduction of the bulky ethylhexyloxy group into carbazole-based (bEHCBA) a also achieved in order to enhance its solubility in organic solvents. The bEHCBA molecule can act as spacer between dye molecules, and reduce dye aggregation and suppress the π-π interaction between neighboring dye molecules, which prevent intermolecular electron losses by charge recombination between the dye molecules. The photovoltaic performance of the NKX2677/bEHCBA-sensitized device exhibited remarkably high, Jsc of 15.02 mA/cm2, Voc of 723 mV, FF of 72.36%, and a conversion efficiency of 7.86% at 100 mW cm-2, which is the best result ever reported for DSSC employing an organic dye NKX2677. Compared with NKX2677 sensitized device, the conversion efficiency of NKX2677/bEHCBA -sensitized device was increased by 77%. |
| 저자 |
최인택, 김환규, 송복주, 송해민, 김상균, 서강득, 주명종, 강민수
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| 소속 |
고려대 |
| 키워드 |
DSSC |
| E-Mail |
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