| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
전기화학 |
| 제목 |
Mo-doped TiO2 blocking layer: Enhanced efficiency in dye-sensitized solar cells with a tunable cunduction band edge and increased charge transfer |
| 초록 |
The power conversion efficiency of dye-sensitized solar cells has been limited because electron transport is not fully achieved, and the injected electrons recombine with the acceptor species before the electrode can collect them. The conduction band of TiO2 shifts postively with increasing the concentration of the Mo content. The concept of introducing metal-doped TiO2 blocking layer into the mesoporous TiO2 network of dye-sensitized solar cells is proposed to enhance the conversion efficiency. The charge transfer resistance in DSSC is significantly suppressed by the Mo-doping. As a result of the downward shifted conduction band and increased charge transport, the photocurrent density (Jsc) of the device is improved remarkably with an almost unchanged photovoltage. The highest power conversion efficiency (η = 8.03%) is obtained at 4% Mo-doping, which shows increases by 13% in Jsc and by 7% in η, as compared with the undoped DSSC. |
| 저자 |
김동우, 손창희, 전소연, Suresh Thogiti, 김재홍
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| 소속 |
영남대 |
| 키워드 |
Dye sensitized solar cell; Mo-doped TiO2; blocking layer; conduction band
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| E-Mail |
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