Influence of Solvent and Post-thermal Treatment on a Photovoltaic Cell with Blends of Self-organizing Poly(3-hexylthiophene) and Fullerene
Influence of Solvent and Post-thermal Treatment on a Photovoltaic Cell with Blends of Self-organizing Poly(3-hexylthiophene) and Fullerene
- 주제(키워드) Solar cells , Photovoltaics , Solvent effects , Post-thermal treatment
- 발행기관 한국물리학회
- 발행년도 2009
- 총서유형 Journal
- UCI G704-000411.2009.55.3.023
- KCI ID ART001497420
- 본문언어 영어
초록/요약
Organic photovoltaic cells based on poly(3-hexylthiophene) (P3HT):[6,6]-C61-butyric acid methyl ester (PCBM) were fabricated by using two different solvents. The photo-induced current and the open-circuit voltage (Voc) show a strong dependence on the polymer processing conditions. We found that the photovoltaic devices fabricated with the non-aromatic solvent chloroform (hereafter CF) have smaller photocurrents under the same reverse bias and higher Voc than the devices fabricated with the aromatic solvent chlorobenzene (hereafter CB). After post-thermal treatment, a strongly enhanced photo-induced current was observed in photovoltaic devices fabricated with CF and a slight photocurrent change was observed in the devices fabricated with CB. The dependence on the solvent and the post-thermal treatment was attributed to the different morphology of solvationinduced interpenetrating network.
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