標題: | Porphyrin Dyes with High Injection and Low Recombination for Highly Efficient Mesoscopic Dye-Sensitized Solar Cells |
作者: | Barea, Eva M. Gonzalez-Pedro, Victoria Ripolles-Sanchis, Teresa Wu, Hui-Ping Li, Lu-Lin Yeh, Chen-Yu Diau, Eric Wei-Guang Bisquert, Juan 應用化學系 應用化學系分子科學碩博班 Department of Applied Chemistry Institute of Molecular science |
公開日期: | 2-六月-2011 |
摘要: | The photovoltaic performance and charge recombination characteristics of porphyrin-based dye-sensitized solar cell (DSC) devices have been investigated using the impedance spectroscopy (IS) technique. The IS results provide key information related to the device performance for a highly efficient porphyrin dye (YD2), a reference porphyrin dye (YD0), and a commercial ruthenium dye (N719). The DSC devices constructed using YD2 and N719 dyes reach similar internal power conversion efficiencies (7.41% vs 7.54%) due to the higher injection of the YD2 dye that is compromised by a lower photovoltage. In addition, both YD2 and N719 dyes exhibit the same charge-transfer resistance, indicating that the recombination rates of both dyes are very similar. The diarylamino group plays a key role to repel the triiodide ions from the titania surface so that the charge recombination of YD2 is less significant compared with that of YD0. |
URI: | http://dx.doi.org/10.1021/jp2018378 http://hdl.handle.net/11536/22781 |
ISSN: | 1932-7447 |
DOI: | 10.1021/jp2018378 |
期刊: | JOURNAL OF PHYSICAL CHEMISTRY C |
Volume: | 115 |
Issue: | 21 |
起始頁: | 10898 |
結束頁: | 10902 |
顯示於類別: | 期刊論文 |