| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
전기화학 |
| 제목 |
Cascade layer at photoanode interfaces: Enhanced efficiency via tungsten doped blocking layer in TiO2-based mesoporous dye-sensitized solar cells |
| 초록 |
Dye-sensitized solar cells (DSSCs) fabricated at low-cost are regarded as one of the most promising photovoltaic devices. Metal doping in TiO2 offers broad tuning of the semiconductor band structure. Devices involving a sequence of layers comprised of different concentrations of metal dopants selected to have different band gaps, offer the possibility of funneling energy toward the current collector. This paper reports the design and fabrication of a W-doped TiO2 graded blocking layer, which can effectively increase the short circuit current by introducing graded energy levels and improve the open circuit potential by introducing blocking layers to reduce charge recombination. In particular, the graded 1-5-7-9 W blocking layer exhibits the highest photovoltaic performance of 11.54 %, which is 50 % higher than the basic DSSCs without a blocking layer. |
| 저자 |
손창희, 조정민, 한지민, Suresh Thogiti, 김재홍
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| 소속 |
영남대 |
| 키워드 |
Dye sensitized solar cell; W-doped TiO2; conduction band; graded electron transfer
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| E-Mail |
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