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- Yoon, Tae-Sik
- Nano Semiconductor Research Lab.
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Hybrid inverted bulk heterojunction solar cells with nanoimprinted TiO2 nanopores
- Author(s)
- Baek, Woon-Hyuk, Seo, Il, Yoon, Tae-Sik, Lee, Hyun Ho, Yun, Chong Man, Kim, Yong-Sang
- Issued Date
- 2009-09
- Citation
- SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.93, no.9, pp.1587 - 1591
- Abstract
- Photovoltaic devices with highly ordered nanoporous titanium dioxide (titania; TiO2) were fabricated to improve the photovoltaic performances by increasing TiO2 interface area. The nanoimprinting lithography technique with polymethyl methacrylate (PMMA) mold was used to form titania nanopores. The solar cell with poly(3-hexylthiophene) (P3HT):[6,6]-phenyl C-61 butyric acid methyl ester (PCBM) active layer on nanoporous titania showed higher power conversion efficiency (PCE) of 1.49% than on flat titania of 1.18%. The improved efficiency using nanoporous titania is interpreted with the enhanced-charge separation and collection by increasing the interface area between TiO2. and active layer. (C) 2009 Elsevier B.V. All rights reserved.
- Publisher
- ELSEVIER SCIENCE BV
- ISSN
- 0927-0248
- Keyword (Author)
- Nanoporous TiO2, Organic solar cells, Hybrid solar cells, Interface area, Inverted structure
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