| 학회 |
한국공업화학회 |
| 학술대회 |
2013년 봄 (05/01 ~ 05/03, ICC JEJU) |
| 권호 |
17권 1호 |
| 발표분야 |
인쇄전자 기술의 나노기술 |
| 제목 |
Charge Transport and Its Effects on Efficiency in Organic Solar Cells |
| 초록 |
Photocurrent generation in organic bulk-heterojunction solar cells is determined by several physical processes that take place in turn. In this talk we demonstrate photocurrent transient in P3HT:F8TBT blend solar cells in response of a 100 microsecond square light pulse to reveal the mechanism of charge transport. The experimental photocurrent transients are characterized by a fast rise, a slow rise, a fast decay and a long-lived tail under weak illumination. At high light intensity photocurrent was observed to peak at a early time and reduce to a steady-state value. In order to obtain a full understanding of this data, we ulitized a time-dependent drift-diffusion model. We found that electrons are slowly trapped and detrapped and cause significant space-charge effects, reducing the device efficiency. |
| 저자 |
황인찬1, Christopher R. McNiell2, Neil C. Greenham3
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| 소속 |
1광운대, 2Monash Univ. / Univ. of Cambridge, 3Univ. of Cambridg |
| 키워드 |
organic solar cell; device physics; charge transport
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| E-Mail |
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