Infrared spectroscopic study on modification process of titania surface and its application to hybrid solar cells
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概要
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[6,6]-phenyl-C61-butyric acid (PCBA) was introduced as a surface modifier for TiO_2/P3HT hybrid solar cells. The modification process was observed using in-situ infrared absorption spectroscopy in the multi-reflective geometry (MIR-IRAS). The spectra showed that longer deposition time leads to a physisorbed PCBA layer which is difficult to be removed by rinsing TiO_2 surface with pure solvent. The modification of TiO_2 with PCBA molecules drastically increased the short circuit current of a titania/poly(3-hexylthiophene) (P3HT) hybrid solar cell due to improved charge separation at the interface. The effects of excess physisorbed PCBAs were also discussed.
- 一般社団法人電子情報通信学会の論文
- 2013-04-11
著者
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Zhang Jinyu
Laboratory for Nanoelectronics and Spinelectronics, Research Institute of Electrical Communication, Tohoku University
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Kimura Yasuo
Laboratory for Nanoelectronics and Spinelectronics, Research Institute of Electrical Communication, Tohoku University
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Ma Teng
Laboratory for Nanoelectronics and Spinelectronics, Research Institute of Electrical Communication, Tohoku University
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Niwano Michio
Laboratory for Nanoelectronics and Spinelectronics, Research Institute of Electrical Communication, Tohoku University
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Tadaki Daisuke
Laboratory for Nanoelectronics and Spinelectronics, Research Institute of Electrical Communication, Tohoku University
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